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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 2095. Отображено 100.

01-03-2012 дата публикации

Medical image alignment apparatus, method, and program

Номер: US20120053454A1

Автор: Caihua WANG, Keigo Nakamura, Satoshi Ihara

Принадлежит: Fujifilm Corp

Generating, with respect to each of the three-dimensional image and the three-dimensional comparison image, a plurality of tomographic images orthogonal to a central axis of each vertebra of the subject along the central axis, calculating a first characteristic amount representing a profile in a direction orthogonal to the central axis at each point on the central axis based on the tomographic images, calculating a second characteristic amount representing a profile in a direction of the central axis at each point on the central axis based on the tomographic images, calculating a third characteristic amount representing regularity of disposition of each vertebra at each point on the central axis based on the calculated first and second characteristic amounts, and aligning positions of the third characteristic amount calculated from the three-dimensional image and the third characteristic amount calculated from the three-dimensional comparison image along the central axis.

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Номер записи: 1

01-03-2012 дата публикации

Method and System For Patient-Specific Modeling of Blood Flow

Номер: US20120053921A1

Автор: Charles A. Taylor

Принадлежит: HeartFlow Inc

Embodiments include a system for planning treatment for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of an anatomical structure of the patient, create a three-dimensional model representing at least a portion of the anatomical structure of the patient based on the patient-specific data, and determine a first fractional flow reserve within the anatomical structure of the patient based on the three-dimensional model and information regarding a physiological condition of the patient. The at least one computer system may be further configured to receive input from a user regarding a plan of treatment, modify the physiological condition of the patient based on the received input, and determine a second fractional flow reserve within the anatomical structure of the patient based on the modified physiological condition of the patient.

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Номер записи: 2

08-03-2012 дата публикации

Body motion detection device and method, as well as radiographic imaging apparatus and method

Номер: US20120059239A1

Автор: Yoshitaka Yamaguchi

Принадлежит: Fujifilm Corp

An image obtaining unit obtains a plurality of radiographic images, which at least partially overlap with one another, taken by carrying out a plurality of imaging operations with respect to an identical subject. An imaging information obtaining unit obtains imaging information representing imaging conditions and an imaged subject during the imaging operations. A body motion index value obtaining unit obtains a body motion index value, which indicates a body motion of the subject during imaging of the radiographic images, based on the imaging information.

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Номер записи: 3

14-06-2012 дата публикации

Generating a suitable model for estimating patient radiation dose resulting from medical imaging scans

Номер: US20120148131A1

Автор: Gregory Couch, James Couch

Принадлежит: Radimetrics Inc

Techniques are disclosed for estimating patient radiation exposure during computerized tomography (CT) scans. More specifically, embodiments of the invention provide efficient approaches for generating a suitable patient model used to make such an estimate, to approaches for estimating patient dose by interpolating the results of multiple simulations, and to approaches for a service provider to host a dose estimation service made available to multiple CT scan providers.

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Номер записи: 4

26-07-2012 дата публикации

Imaging Method and Apparatus with Optimized Grayscale Value Window Determination

Номер: US20120189192A1

Автор: Anna Jerebko

Принадлежит: SIEMENS AG

A self-learning imaging method is particularly suited radiation imaging, such as for mammography. A plurality of training data sets are displayed on a display apparatus. A grayscale value setting is selected for each training data set. A feature set with at least one feature is assigned to each training data set. The feature set and the grayscale value setting are stored for each training data set. The grayscale value setting of an examination data set is selected according to the feature sets and the grayscale value setting of the training data sets.

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Номер записи: 5

06-12-2012 дата публикации

Method and device for adjusting the visualization of volume data of an object

Номер: US20120308095A1

Автор: Anna Jerebko, Klaus Engel

Принадлежит: Individual

An adjustment of the visualization of volume data of an object as an image with regard to diagnostically relevant medical information relating to the environment of a region under investigation is provided. In the process, at least one slice region is specified in accordance with slice information within the volume data. A first mapping of a value range of the volume data is used for visualizing the at least one slice region on a display. A second mapping different from the first mapping is used for visualizing a region bordering on the at least one slice region on the display.

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Номер записи: 6

20-12-2012 дата публикации

Device for planning a transcatheter aortic valve implantation

Номер: US20120323545A1

Автор: Dominik BERNHARDT, Fernando Vega-Higuera, Peter Aulbach

Принадлежит: SIEMENS AG

A device for planning a transcatheter aortic valve implantation is disclosed. The device includes a segmentation module for segmenting the aorta ascendens with the aorta annulus, the aortic valves and the coronary ostia as well as the left ventricle; a determination module, which determines on the basis of the segmented data the aorta annulus plane and from this one or more angiography projections for setting an angiography device, with which the aorta annulus and the coronary ostia are able to be detected in the optimum manner for positioning the transcatheter heart valve; and an output module that outputs this information. The proposed device supports the user in the planning of a transcatheter aortic valve implantation.

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Номер записи: 7

03-01-2013 дата публикации

Medical image processing apparatus

Номер: US20130002657A1

Автор: Shinya Sugiyama

Принадлежит: Toshiba Corp, Toshiba Medical Systems Corp

According to one embodiment, a medical image processing apparatus includes an image obtaining unit, a three-dimensional medical image generating unit, a correction information obtaining unit, a display angle correcting unit, and a display unit. The image obtaining unit obtains medical image data including an object. The three-dimensional medical image generating unit generates stereoscopic three-dimensional medical image data including a plurality of objects based on the medical image data obtained by the image obtaining unit. The correction information obtaining unit obtains correction information for the plurality of objects. The display angle correcting unit corrects, based on the correction information, the three-dimensional medical image data so that a display angle of at least one of the plurality of objects is corrected. The display unit displays a three-dimensional medical image based on the three-dimensional medical image data corrected by the display angle correcting unit.

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Номер записи: 8

07-03-2013 дата публикации

System and methods for intraoperative guidance feedback

Номер: US20130060146A1

Автор: Adrain Linus Dinesh MARIAMPILLAI, Beau Anthony STANDISH, Michael Ka Kit LEUNG, Victor Xiao Dong Yang

Принадлежит: RYERSON UNIVERSITY

Systems and methods for surgical guidance and image registration are provided, in which three-dimensional image data associated with an object or patient is registered to topological image data obtained using a surface topology imaging device. The surface topology imaging device may be rigidly attached to an optical position measurement system that also tracks fiducial markers on a movable instrument. The instrument may be registered to the topological image data, such that the topological image data and the movable instrument are registered to the three-dimensional image data. The three-dimensional image data may be CT or MRI data associated with a patient. The system may also co-register images pertaining to a surgical plan with the three-dimensional image data. In another aspect, the surface topology imaging device may be configured to directly track fiducial markers on a movable instrument. The fiducial markers may be tracked according to surface texture.

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Номер записи: 9

14-03-2013 дата публикации

Method and system for patient-specific modeling of blood flow

Номер: US20130064438A1

Автор: Charles A. Taylor, Christopher K. Zarins, Gilwoo Choi, Timothy A. Fonte, Ying Bai

Принадлежит: HeartFlow Inc

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model.

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Номер записи: 10

14-03-2013 дата публикации

Method and system for patient-specific modeling of blood flow

Номер: US20130066618A1

Автор: Charles A. Taylor, Christopher K. Zarins, Gilwoo Choi, Timothy A. Fonte, Ying Bai

Принадлежит: HeartFlow Inc

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model.

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Номер записи: 11

21-03-2013 дата публикации

SYSTEMS AND METHODS FOR PLANNING IMAGE-GUIDED INTERVENTIONAL PROCEDURES

Номер: US20130072784A1

Автор: Velusamy Gnanasekar

Принадлежит:

In some embodiments, a planning station can receive image data associated with an image(s) of an area of interest within a body of a patient and display the image(s) on a display device. A user can make a selection of a first interventional tool and a second interventional tool about which information is stored in a memory of the planning station. The planning station can execute a simulation viewable on the display device of a treatment plan for disposing the first and second interventional tools in the body of the patient and applying thermal energy from the first and second interventional tools to the body of the patient. The planning station can generate a thermal model of the thermal effect collectively produced on tissue of the patient by the first interventional tool and the second interventional tools and display the thermal model on the display device. 1. A non-transitory processor-readable medium storing code representing instructions to cause a processor to:receive image data associated with at least one image of an area of interest within a body of a patient, the area of interest including a target tissue to be treated;display the at least one image on a display device;receive an input from a user of a selection of a first interventional tool from a plurality of interventional tools about which information is stored in a memory,receive an input from the user of a selection of a second interventional tool from the plurality of interventional tools about which information is stored in the memory;execute a simulation viewable on the display device of a treatment plan including disposing the first interventional tool in a first location in the body of the patient, disposing the second interventional tool in a second location in the body of the patient, applying a first amount of energy from the first interventional tool and applying a second amount of energy from the second interventional tool to the body of the patient;generate a thermal model of the ...

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Номер записи: 12

20-06-2013 дата публикации

X-RAY DIAGNOSIS APPARATUS AND CONTROL METHOD THEREOF

Номер: US20130156154A1

Автор: Ishikawa Takayuki, Sakaguchi Takuya, Takemoto Hisato, WATANABE Koichiro

Принадлежит:

An X-ray diagnosis apparatus includes a radiography image generating unit, a fluoroscopy image generating unit, a display control unit and an irradiation field changing unit. The radiography image generating unit controls an X-ray irradiation device, an X-ray detection device, a retainer, and a bed system, and generates a radiography image by using a radiography irradiation field. The fluoroscopy image generating unit controls the X-ray irradiation device, the X-ray detection device, the retainer, and the bed system, and generates a fluoroscopy image by using a fluoroscopy irradiation field, the fluoroscopy irradiation field being narrower than the radiography irradiation field. The display control unit generates a superimposed image in which the fluoroscopy image is superimposed on a part of the radiography image, and displays the superimposed image on a display device. The irradiation field changing unit changes the fluoroscopy irradiation field with the superimposed image being displayed. 1. An X-ray diagnosis apparatus comprising:an X-ray irradiation device configured to irradiate an object with an X-ray, the device including an X-ray source configured to generate an X-ray and a movable aperture device configured to form an X-ray irradiation field;an X-ray detection device disposed to be opposed to the X-ray irradiation device and configured to detect the X-ray;a retainer configured to retain the X-ray irradiation device and the X-ray detection device;a bed system provided between the X-ray irradiation device and the X-ray detection device, and configured to place an object thereon;a radiography image generating unit configured to control the X-ray irradiation device, the X-ray detection device, the retainer, and the bed system, and to generate a radiography image as a static image by using a radiography irradiation field as the X-ray irradiation field;a fluoroscopy image generating unit configured to control the X-ray irradiation device, the X-ray detection ...

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Номер записи: 13

01-08-2013 дата публикации

MULTIPLE MEDICAL DEVICE GUIDANCE

Номер: US20130197357A1

Автор: Green Caroline, Heaney Brian, Razzaque Sharif, State Andrei

Принадлежит: Inneroptic Technology, Inc

A system and method for providing image guidance for placement of one or more medical devices at a target location. The system receives emplacement information of medical devices within a predetermined area. The system calculates a viewing angle in a virtual 3D space of a plurality of virtual medical devices corresponding to the plurality of medical devices. The system also causes a display device to display the plurality of virtual medical devices based at least on the calculated viewing angle. 1. A method , comprisingreceiving emplacement information of a plurality of needles;receiving emplacement information of a medical imaging device;receiving at least one image from the medical imaging device;calculating a first viewing angle in a virtual 3D space of the at least one image based at least on the emplacement information of the medical imaging device with respect to a perspective view;calculating a second viewing angle in the virtual 3D space of a virtual medical imaging device corresponding to the medical imaging device based at least on the emplacement information of the medical imaging device with respect to the perspective view;calculating a plurality of viewing angles in the virtual 3D space of a plurality of virtual needles corresponding to the plurality of needles based at least on the emplacement information of the plurality of needles with respect to the perspective view;causing the display device to display the at least one image based at least on the first calculated viewing angle in the virtual 3D space;causing the display device to display the virtual medical imaging device based at least on the second calculated viewing angle in the virtual 3D space; andcausing a display device to display the plurality of virtual needles based at least on the plurality of calculated viewing angles in the virtual 3D space.2. A method , comprisingreceiving emplacement information of a plurality of medical devices within a predetermined area;calculating a viewing angle ...

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Номер записи: 14

22-08-2013 дата публикации

Adaptive imaging and frame rate optimizing based on real-time shape sensing of medical instruments

Номер: US20130216025A1

Автор: Adrien Emmanuel Desjardins, Gert Wim 'T Hooft, Jinnan Wang, Luis Felipe Gutierrez, Maya Ella Barley, Raymond Chan

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

A system and method for adaptive imaging include a shape sensing system ( 115, 117 ) coupled to an interventional device ( 102 ) to measure spatial characteristics of the interventional device in a subject. An image module ( 130 ) is configured to receive the spatial characteristics and generate one or more control signals in accordance with the spatial characteristics. An imaging device ( 110 ) is configured to image the subject in accordance with the control signals.

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Номер записи: 15

29-08-2013 дата публикации

Image data determination method, image processing workstation, target object determination device, imaging device, and computer program product

Номер: US20130223715A1

Автор: Anna Jerebko, Michael Kelm, Michael Suehling, Michael Wels

Принадлежит: SIEMENS AG

A second form of image data is determined from a first form of image data of an examination object in a radiological imaging system. A set of a defined plurality of input pixels in the image data of the first form is determined. In addition, a set of target form parameters of a target form model with a defined plurality of target form parameters is prognostically determined by way of a data-driven regression method from the plurality of input pixels. The number of target form parameters is smaller than the number of input pixels. The second form of image data is determined from the set of target form parameters. There is also described a method in radiological imaging for determining the geometric position of a number of target objects in a second form of image data and an image processing workstation for determining a second form of image data from a first form of image data as well as an imaging device.

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Номер записи: 16

19-09-2013 дата публикации

Network cycle features in relative neighborhood graphs

Номер: US20130243292A1

Автор: Ali Kamen, Hari Sundar, John V. Frangioni, Parmeshwar Khurd, Summer Gibbs-Strauss

Принадлежит: Siemens Corp

Methods for analyzing biomedical data include: (a) obtaining macroscopic imaging data; (b) obtaining histopathological imaging data; (c) executing a parallel algorithm stored on a non-transient computer-readable medium to compute one or a plurality of network cycle features of a relative neighborhood graph derived from the histopathological imaging data; (d) registering the macroscopic imaging data and the histopathological imaging data; and (e) correlating the macroscopic imaging data and the network cycle features. Systems for analyzing biomedical data and computer readable storage media are described.

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Номер записи: 17

19-09-2013 дата публикации

GENERATION OF VISUAL COMMAND DATA

Номер: US20130245435A1

Автор: Schnaars Anja, Soza Grzegorz, TIETJEN Christian

Принадлежит:

In a computerized method and system to generate visualization command data for two-dimensional visualization of a vascular tree of a vascular system from tomography data acquired via an imaging system, tomography data of the vascular tree are registered in the form of prepared tomography data that include acquired tomography data of the vascular tree in which said vascular tree is segmented at least in a region of surrounding structures, and in which are present a number of curve lines of vessels of the vascular tree that branch with one another. Inlets are shaped between curve lines that are adjacent and/or connected with one another via node points. Representation data are generated in which the inlets are arranged flat, adjoining one another in a two-dimensional presentation plane. The visualization command data are derived from the representation data and presented as an output. 1. A method to generate visualization command data for two-dimensional visualization of a vascular tree of a vascular system from tomography data acquired with an imaging system comprising:providing a processor with tomography data of a vascular tree, acquired using an imaging system as prepared tomography data comprising the acquired tomography data of the vascular tree in which the vascular tree is segmented, and in which a plurality of curve lines of the vascular tree are present that branch with respect to one another;in said processor automatically shaping inlets between curve lines, among said plurality of curve lines that have a geometrical relationship with respect to each other selected from the group of being adjacent and being connected to each other via respective node points;in said processor, generating representation data for said vascular tree in which said inlets are arranged so as to be flat and adjoining one another in a two-dimensional presentation plane; andin said processor deriving, from said representation data, visualization command data that control a visualized ...

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Номер записи: 18

03-10-2013 дата публикации

Feature-based registration method

Номер: US20130259349A1

Автор: Dorian Averbuch

Принадлежит: COVIDIEN LP

Methods for registering a three-dimensional model of a body volume to a real-time indication of a sensor position that involve analyzing scanned and sensed voxels and using parameters or thresholds to identify said voxels as being either tissue or intraluminal fluid. Those voxels identified as fluid are then used to construct a real-time sensed three-dimensional model of the lumen which is then compared to a similarly constructed, but previously scanned model to establish and update registration.

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Номер записи: 19

17-10-2013 дата публикации

Radio tomographic image generation method and device

Номер: US20130272490A1

Автор: Masafumi Noguchi

Принадлежит: Fujifilm Corp

A radio tomographic image generation device includes a reconstruction unit for generating a plurality of reconstructed images of different iteration numbers by a successive approximation process; a region segmentation unit for obtaining information about structure based on radiographic image signals, and segmenting, based on the information about structure, a region, of which the tomographic image is generated, into a plurality of segmented regions having different information about structure; and an image combining unit for generating partial tomographic images by using the reconstructed images of different iteration numbers for the individual segmented regions based on the information about structure of the individual segmented regions, and generating a tomographic image of a subject by using the generated partial tomographic images for the individual segmented regions.

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Номер записи: 20

07-11-2013 дата публикации

Truncation compensation for iterative cone-beam ct reconstruction for spect/ct systems

Номер: US20130294570A1

Автор: Eberhard Sebastian Hansis

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

A multiple modality imaging system ( 10 ) includes a cone-beam computed tomography scanner ( 24, 30 ) which acquires CT projection data of a subject ( 22 ) in an examination region ( 18 ) and a nuclear imaging scanner which concurrently/subsequently acquires nuclear projection data of the subject in the examination region. A CT reconstruction processor ( 34 ) is programmed to perform the steps of: in the CT projection data, defining a field-of-view (FoV) with a voxel grid in a trans-axial direction; determining the subject's maximum trans-axial extents; generating an extending FoV by extending the voxel grid of the FoV to at least one extended region outside the FoV that encompass at least the determined maximum trans-axial extents and all attenuation in the trans-axial direction; and iteratively reconstructing the CT projection data into an attenuation map of the extended FoV. At least one nuclear reconstruction processor ( 44 ) is programmed to correct the acquired nuclear projection data based on the iteratively reconstructed attenuation map.

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Номер записи: 21

28-11-2013 дата публикации

Medical image diagnosis apparatus, medical image display apparatus, medical image processing apparatus, and medical image processing program

Номер: US20130315455A1

Автор: Misako Wakai

Принадлежит: Toshiba Corp, Toshiba Medical Systems Corp

An inner wall extractor extracts the inner wall of a vital tissue based on medical image data. An outer wall extractor extracts the outer wall of the vital tissue based on the medical image data. A first raised portion calculator obtains information including the presence of a first raised portion in which the inner wall of the vital tissue is raised inward, based on the extracted inner wall of the vital tissue. A second raised portion calculator obtains information including the presence of a second raised portion in which the outer wall of the vital tissue is raised outward, based on the extracted outer wall of the vital tissue. A display controller superimposes the information of the first raised portion obtained by the first raised portion calculator and the information of the second raised portion obtained by the second raised portion calculator on an image of the vital tissue, and causes the image to be displayed on a display unit.

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Номер записи: 22

20-03-2014 дата публикации

MYOCARDIAL CLUSTERIFICATION AND ORIENTATION

Номер: US20140081132A1

Автор: Dwivedi Shekhar

Принадлежит: KONINKLIJKE PHILIPS N.V.

A cardiac imaging method includes acquiring a projection image representation which includes a myocardium (S). The myocardium is segmented and a mask is generated (S). The mask is optimized (S). A blood pool is determined from the optimized mask (S) and the mask is skeletonized based on a clusterfication of the myocardial slices (S). The center of mass is determined (S) from the blood pool and the skeletonized mask. Myocardial parameters are determined (S) from the skeletonized mask. 1. A method for cardiac imaging , comprising:acquiring functional imaging data of a subject, the functional imaging data including at least a myocardium;determining the pose and geometry of the myocardium;estimating diagnostic parameters of the myocardium based on the determined pose and geometry.2. The method according to claim 1 , wherein the step of determining the pose and geometry of the myocardium includes:segmenting a left ventricle;generating a left ventricle myocardial mask;computing a center of mass of the left ventricle;skeletonizing the left ventricle myocardial mask to generate a myocardial skeleton;pruning the myocardial skeleton.3. The method according to claim 2 , wherein pruning the myocardial skeleton includes:calculating a distance from each non-zero skeletal pixel to the center of mass of the left ventricle;binning the calculated distances into distance bins;generating a histogram from a number of pixels in each of the distance bins;determining from the histogram a lower bin threshold, an upper bin threshold, a low bin frequency threshold, and an upper bin frequency threshold;removing from the skeleton pixels outside of the lower and upper bin thresholds and the lower and upper bin frequency thresholds.4. The method according to claim 2 , further including:correcting the left ventricle mask for boundary thickening and myocardial gaps.5. The method according to claim 2 , further including:segmenting the left ventricle mask to generate a stack of left ventricle mask ...

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Номер записи: 23

07-01-2021 дата публикации

AUTOMATIC EXPOSURE CONTROL SETUP

Номер: US20210000440A1

Автор: TOEPFER Karin

Принадлежит:

A method for exposure control setup for a volume radiographic imaging apparatus obtains a reconstructed image volume of a subject acquired from the imaging apparatus using a set of x-ray technique settings. An image slice from the reconstructed image volume displays in at least a first rendering having a first corresponding noise factor and a second rendering having a second corresponding noise factor, different from the first noise factor. An operator instruction selects one of the at least first and second renderings and stores the corresponding noise factor for the set of x-ray technique settings. An automatic exposure control of the imaging apparatus is configured according to the stored noise factor. 1. A method for exposure control setup for a volume radiographic imaging apparatus , the method comprising:reconstructing a volume image of a subject based on a series of images of the subject captured by the volume radiographic imaging apparatus;displaying side-by-side a plurality of radiographic images of a same image slice from the reconstructed volume image of the subject, a first one of the displayed radiographic images comprising a fixed noise factor and a second one of the displayed radiographic images comprising a variable noise factor, and simultaneously displaying a user interface for adjusting the variable noise factor of the second one of the displayed radiographic images; andin response to an operator selection of the second one of the displayed radiographic images having a corresponding noise factor, determining an automatic exposure control for the volume radiographic imaging apparatus based on the corresponding noise factor.2. The method of claim 1 , further comprising configuring the volume radiographic imaging apparatus with the determined automatic exposure control.3. The method of claim 1 , further comprising reconstructing a volume image of the subject using a series of projection images acquired by the volume radiographic imaging apparatus ...

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Номер записи: 24

03-01-2019 дата публикации

METHOD AND SYSTEM FOR IMAGE PROCESSING TO DETERMINE BLOOD FLOW

Номер: US20190000554A1

Автор: Taylor Charles A.

Принадлежит:

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model. 1184-. (canceled)185. A method for processing images to determine cardiovascular information , comprising the steps of:receiving image data including a plurality of coronary arteries originating from an aorta;processing the image data to generate three-dimensional shape models of the coronary arteries;simulating a blood flow for the generated three-dimensional shape models of the coronary arteries; anddetermining a fractional flow reserve (FFR) of the coronary arteries based on a blood flow simulation result, wherein in the step of simulating the blood flow, a computational fluid dynamics model is applied to the three-dimensional shape models of the coronary arteries, a lumped parameter model is combined with the computational fluid dynamics model, and a simplified coronary artery circulation model including coronary arteries, capillaries of the coronary arteries and coronary veins is used as the lumped parameter model.186. The method of claim 185 , wherein claim 185 , when simulating the blood flow claim 185 , when applying the computational fluid dynamics model to the three-dimensional shape models of the coronary arteries claim 185 , using an aorta blood pressure pattern as an inlet boundary condition.187. The method of claim 185 , wherein simulating the blood flow comprises determining lengths of centerlines of the three- ...

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Номер записи: 25

05-01-2017 дата публикации

System and method for automatic pulmonary embolism detection

Номер: US20170004619A1

Автор: Jianming Liang, Nima Tajbakhsh

Принадлежит: Jianming Liang, Nima Tajbakhsh

A system and method for detecting pulmonary embolisms in a subject's vasculature are provided. In some aspects, the method includes acquiring a set of images representing a vasculature of the subject, and analyzing the set of images to identify pulmonary embolism candidates associated with the vasculature. The method also includes generating, for identified pulmonary embolism candidates, image patches based on a vessel-aligned image representation, and applying a set of convolutional neural networks to the generated image patches to identify pulmonary embolisms. The method further includes generating a report indicating identified pulmonary embolisms.

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Номер записи: 26

04-01-2018 дата публикации

Systems and methods for medical image registration

Номер: US20180005388A1

Автор: Nathaniel Roth, Yoel Zilberstien

Принадлежит: Spectrum Dynamics Medical Ltd

There is provided a method for registration of intravital anatomical imaging modality image data and nuclear medicine image data of a patient's heart comprising: obtaining anatomical image data including a heart of a patient outputted by an anatomical intravital imaging modality; obtaining at least one nuclear medicine image data outputted by a nuclear medicine imaging modality, the nuclear medicine image data including the heart of the patient; identifying a segmentation of a network of vessels of the heart in the anatomical image data; identifying a contour of at least part of the heart in the nuclear medicine image data, the contour including at least one muscle wall border of the heart; correlating between the segmentation and the contour; registering the correlated segmentation and the correlated contour to form a registered image of the anatomical image data and the nuclear medicine image data; and providing the registered image for display.

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Номер записи: 27

09-01-2020 дата публикации

MEDICAL IMAGING APPARATUS COMPRISING PRIMARY MODULE AND SUPPLEMENTAL MODULE AND PROCESS THEREOF

Номер: US20200008676A1

Автор: DONG Yonghua

Принадлежит:

The present invention provides medical imaging apparatus comprising a primary module for imaging a patient and a supplemental module. A controlling circuitry activates the supplemental module shortly before, during, or shortly after an imaging process using the primary module. Information, data or images of the patient acquired with the supplemental module is registered to the primary image. The invention can aid a radiologist to avoid confusion, mismatching, and other errors when he is reading the primary image; and can help a doctor to establish a correlation between conditions revealed by the primary image, and cutaneous conditions and anatomical change revealed by the supplemental module. 1. A medical imaging apparatus comprisinga primary module for imaging a patient, wherein an image obtained by the primary module is defined as a primary image;a supplemental module that is different from the primary module, wherein the supplemental module acquires information, data or images of the patient that are associated with or supplemental to the primary image;a controlling circuitry configured to activate the supplemental module shortly before, during, or shortly after an imaging process using the primary module; anda processing circuitry that registers the information, data or images acquired from the supplemental module with the primary image.2. The medical imaging apparatus according to claim 1 , further comprising a display for displaying both'the primary image and the information claim 1 , data or images that are registered with the primary image.3. The medical imaging apparatus according to claim 1 , wherein the primary module comprises a X-ray projection radiographing device claim 1 , an ultrasound scanner claim 1 , a X-ray CT scanner claim 1 , a positron emission tomography (PET) device claim 1 , a single-photon emission computed tomography (SPECT) device claim 1 , a magnetic resonance imaging (MRI) scanner claim 1 , an elastographer claim 1 , a tactile imaging ...

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Номер записи: 28

27-01-2022 дата публикации

MEDICAL IMAGE PROVIDING APPARATUS AND MEDICAL IMAGE PROCESSING METHOD OF THE SAME

Номер: US20220027024A1

Автор: GULAKA Praveen, Lee Yeon-Ju, Srinivasan Girish

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A medical image providing apparatus includes: a display configured to display a first image including an object; and a processor. The processor is configured to: while the first image is displayed, control to output, on the display, a list including second medical images, wherein each of the second medical images is reconstructed by one of a plurality of medical images reconstruction techniques using image data of a first region in the first image; control to output, on the display, a manipulation menu item for manipulating at least one of the second medical images included in the list; based on a selection of the manipulation menu item corresponding to one of the second medical images, receive a manipulation input corresponding to the selected manipulation menu item; and update the second medical image corresponding to the selected manipulation menu item by applying the manipulation input. 1. A medical image providing apparatus comprising:a display configured to display a first image comprising an object; and while the first image is displayed, control to output, on the display, a list comprising second medical images, wherein each of the second medical images is reconstructed by one of a plurality of medical images reconstruction techniques using image data of a first region in the first image;', 'control to output, on the display, a manipulation menu item for manipulating at least one of the second medical images included in the list;', 'based on a selection of the manipulation menu item corresponding to one of the second medical images, receive a manipulation input corresponding to the selected manipulation menu item; and', 'update the second medical image corresponding to the selected manipulation menu item by applying the manipulation input., 'a processor configured to2. The medical image providing apparatus of claim 1 , wherein the manipulation menu item comprises a menu option for adjusting a window level (WL) of the second medical image.3. The medical image ...

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Номер записи: 29

18-01-2018 дата публикации

PLANNING SUPPORT DURING AN INTERVENTIONAL PROCEDURE

Номер: US20180014884A1

Автор: Kowarschik Markus, Pfister Marcus

Принадлежит:

Methods and systems are disclosed herein for improved safer planning support during interventional procedures for inserting stents into a hollow organ of a patient by a guide device. One method includes: providing or recording a three-dimensional image data set of the hollow organ in a first position; segmentation or providing a segmentation of the three-dimensional image data set; providing or recording a two-dimensional image of the guide device introduced into the hollow organ; overlaying the three-dimensional image data set with the two-dimensional image; determining at least one corrected position of one or more section(s) of the hollow organ respectively using the overlaying of the three-dimensional image data set with the two-dimensional image; and determining the respective deformation energy of the hollow organ in the section(s) for the case of removal of the guide device using the previously determined corrected position compared to the first position. 1. A method of planning support for an interventional procedure for introducing a stent into a hollow organ of a patient by a guide device , the method comprising:providing or recording a three-dimensional image data set of the hollow organ in a first position;segmenting or providing a segmentation of the three-dimensional image data set;providing or recording an at least two-dimensional image of the guide device introduced into the hollow organ;overlaying the three-dimensional image data set with the at least two-dimensional image to provide an overlaid image;determining at least one corrected position of one or more sections of the hollow organ respectively using the overlaid image; anddetermining the respective deformation energy of the hollow organ in the one or more section for a case of removal of the guide device using the determined corrected position compared to the first position.2. The method of claim 1 , wherein the first position is an original position.3. The method of claim 1 , wherein the ...

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Номер записи: 30

21-01-2016 дата публикации

IMAGE PROCESSING APPARATUS, MEDICAL IMAGE DIAGNOSTIC APPARATUS AND IMAGE PROCESSING METHOD

Номер: US20160015349A1

Автор: HASHIMOTO Shinichi, OHUCHI Hiroyuki

Принадлежит:

The image processing apparatus includes a processing circuitry. The processing circuitry is configured to obtain first volume data showing a morphological shape of an object and second volume data showing information corresponding to a position spatially different from a position of the object. The processing circuitry is configured to provide the information in the second volume data to the position of the object in the first volume data.

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Номер записи: 31

03-02-2022 дата публикации

SYNTHETIC MAMMOGRAM WITH REDUCED OVERLAYING OF TISSUE CHANGES

Номер: US20220036608A1

Автор: Kappler Steffen, WICKLEIN Julia

Принадлежит: Siemens Healthcare GmbH

A method is for generating a first synthetic mammogram. In an embodiment, the method includes acquiring a tomosynthesis dataset including a plurality of projection images of a tissue region from different projection directions in a projection angle range; reconstructing a slice image dataset based on the tomosynthesis dataset; localizing tissue changes in the slice image dataset; determining a first projection direction for a first synthetic mammogram based on the spatial distribution of the tissue changes in the slice image dataset and generating the first synthetic mammogram in the first projection direction based on the tomosynthesis dataset. 1. A method for generating a first synthetic mammogram , comprising:acquiring a tomosynthesis dataset including a plurality of projection images of a tissue region from different projection directions in a projection angle range;reconstructing a slice image dataset based on the tomosynthesis dataset;localizing tissue changes in the slice image dataset;determining a first projection direction for a first synthetic mammogram based on a spatial distribution of the tissue changes in the slice image dataset; andgenerating the first synthetic mammogram in the first projection direction based on the tomosynthesis dataset.2. The method of claim 1 , wherein the first synthetic mammogram has a minimum overlap of tissue changes from different slices of the slice image dataset.3. The method of claim 1 , wherein a probability map for tissue changes is generated during the localizing.4. The method of claim 3 , wherein a plurality of forward-projection datasets are generated during the determining by way of a respective forward projection of the probability map for each respective different projection direction.5. The method of claim 4 , wherein a parameter value is determined for a plurality of projection directions based on the planar distribution of the probability values for tissue changes in the forward-projection dataset.6. The ...

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Номер записи: 32

10-02-2022 дата публикации

Systems and Methods for Identification of Pulmonary Conditions

Номер: US20220039770A1

Автор: Guo Haiwei Henry, HSU JOE, Mottaghi Seyyed Ali, Sharifi Husham, Yeung-Levy Serena Yu-Ching

Принадлежит: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

Systems and methods for identification of pulmonary conditions accordance with embodiments of the invention are illustrated. One embodiment includes a method for identifying pulmonary conditions in hematopoietic cell transplantation patients, include obtaining a computed tomography (CT) scan of a patient's lungs, calculating a plurality of parametric response mapping (PRM) metrics, providing the plurality of PRM metrics to a machine learning model, obtaining a classification of the CT scan as indicating whether or not the patient's lungs present with a pulmonary condition, and providing a report comprising the classification. 1. A method for identifying pulmonary conditions in hematopoietic cell transplantation patients , comprising:obtaining a computed tomography (CT) scan of a patient's lungs;calculating a plurality of parametric response mapping (PRM) metrics;providing the plurality of PRM metrics to a machine learning model;obtaining a classification of the CT scan as indicating whether or not the patient's lungs present with a pulmonary condition; andproviding a report comprising the classification.2. The method for identifying pulmonary conditions in hematopoietic cell transplantation patients of claim 1 , wherein the PRM metrics comprise classifications of voxels in the CT scan as presenting with one of: normal lung parenchyma claim 1 , functional small airway disease claim 1 , emphysema claim 1 , and parenchymal disease.3. The method for identifying pulmonary conditions in hematopoietic cell transplantation patients of claim 1 , further comprising providing at least one metric describing an erector spinae muscle of the patient (ES) to the machine learning model.4. The method for identifying pulmonary conditions in hematopoietic cell transplantation patients of claim 3 , wherein the at least one metric describing the ES is calculated by:locating bones within coronal slices of the CT scan;identifying a coronal slice of the CT scan that contains an image of a ...

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Номер записи: 33

22-01-2015 дата публикации

Medical treatment apparatus, control device and control method

Номер: US20150025295A1

Автор: Kyoka Sugiura, Takeshi Mita, Yasunori Taguchi

Принадлежит: Toshiba Corp

According to an embodiment, a medical treatment apparatus includes: a first acquirer to acquire a group including five or more pairs of corresponding points on a first perspective image of a subject captured at a first timing and a second perspective image of the subject captured at a second timing; a second acquirer to acquire a first parameter including position/orientation information of an imaging device capturing the first perspective image and conversion information related to a coordinate system of the first perspective image, and acquire a second parameter including position/orientation information of an imaging device capturing the second perspective image and conversion information related to a coordinate system of the second perspective image; a calculator to calculate difference in position of the subject between the first timing and the second timing using the group and the parameters; and a controller to control a subject position using the difference.

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Номер записи: 34

23-01-2020 дата публикации

SIMPLIFIED NAVIGATION OF SPINAL MEDICAL IMAGING DATA

Номер: US20200022609A1

Автор: Börnert Peter, Klinder Tobias, Lorenz Cristian

Принадлежит:

The invention provides for a medical imaging system () comprising: a memory () for storing machine executable instructions (), a display () for rendering a user interface (), and a processor (). Execution of the machine executable instructions causes the processor to receive () three dimensional medical image data () descriptive of a region of interest () of a subject (). The region of interest comprises a spine (). Execution of the machine executable instructions further causes the processor to receive () a set of spinal coordinate systems () each descriptive of a location and an orientation of spinal vertebrae in the three dimensional medical image data. The set of spinal coordinate systems further comprises a set of spine centerline positions () each positioned on a spine centerline (). Execution of the machine executable instructions further causes the processor to receive () a mapping () between the set of spinal coordinate systems and a simplified coordinate system. The simplified coordinate system comprises a spinal height () descriptive of a position along the spine centerline. The simplified coordinate system further comprises a rotational orientation relative to a local vertebrae orientation. The simplified coordinate system further comprises an offset from the spine centerline. Execution of the machine executable instructions further cause the processor to repeatedly receive () a simplified coordinate () of the simplified coordinate system from the user interface. Execution of the machine executable instructions further cause the processor to repeatedly calculate () a spinal image rendering (). Calculating the spinal image rendering comprises using the mapping to transform the simplified coordinate into the set of spinal coordinate systems to determine an image location in the three dimensional medical image data. Execution of the machine executable instructions further cause the processor to repeatedly render () the spinal image rendering on the display. ...

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Номер записи: 35

02-02-2017 дата публикации

MEDICAL IMAGE DIAGNOSTIC APPARATUS

Номер: US20170027533A1

Автор: Bednarek Daniel, Rana Vijay, Sakaguchi Takuya, Takemoto Hisato, WATANABE Yuichiro

Принадлежит:

According to one embodiment, a medical image diagnostic apparatus includes an X-ray tube, X-ray detector, image generation circuitry, display, and correction circuitry. The X-ray tube generates X-rays to an object. The X-ray detector detects the X-rays. The image generation circuitry generate an X-ray image based on the detected X-rays. The display displays an incident dose of the X-rays on the object, on an object image indicating the object. The correction circuitry correct a relative positional relationship between the object image and a display area of the incident dose on the object image based on the X-ray image. 1. A medical image diagnostic apparatus comprising:an X-ray tube configured to generate X-rays to an object;an X-ray detector configured to detect the X-rays;image generation circuitry configured to generate an X-ray image based on the detected X-rays;a display configured to display an incident dose of the X-rays on the object, on an object image indicating the object; andcorrection circuitry configured to correct a relative positional relationship between the object image and a display area of the incident dose on the object image based on the X-ray image.2. The apparatus according to claim 1 , wherein the correction circuitry is configured to correct at least one of a position and a size of the object image based on an anatomical landmark on the X-ray image.3. The apparatus according to claim 1 , wherein the image generation circuitry is configured to generate a different direction image corresponding to at least one imaging direction different from an imaging direction concerning the X-ray image claim 1 , andthe correction circuitry is configured to correct at least one of a size of the display area of the incident doses and a size of the object image based on an anatomical landmark on the different direction image.4. The apparatus according to claim 1 , further comprising:detection circuitry configured to detect a positional shift between an ...

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Номер записи: 36

02-02-2017 дата публикации

APPARATUS AND METHOD FOR RECONSTRUCTING PANORAMIC X-RAY IMAGE

Номер: US20170027536A1

Автор: Choi Sung Il

Принадлежит:

The present invention provides an apparatus and method for reconstructing a panoramic X-ray image. The apparatus includes a storage unit for storing image data of multiple image layers; an image processing unit for determining a reference image layer among the multiple image layers, finding blocks that correspond to at least one block designated in the reference image layer from other image layers, selecting a clearest block by comparing image data of the corresponding blocks, and reconstructing the reference image layer by replacing the designated block in the reference image layer with the clearest block selected in any of the other image layers, if the selected block is not the same as the designated block in the reference image layer; and a display unit for displaying a panoramic image of the reconstructed reference image layer. 1. An apparatus for reconstructing a panoramic X-ray image , the apparatus comprising:a storage unit for storing image data of multiple image layers;an image processing unit for determining a reference image layer among the multiple image layers, finding blocks that correspond to at least one block designated in the reference image layer from other image layers, selecting a clearest block by comparing image data of the corresponding blocks, and reconstructing the reference image layer by replacing the designated block in the reference image layer with the clearest block selected in any of the other image layers, if the selected block is not the same as the designated block in the reference image layer; anda display unit for displaying a panoramic image of the reconstructed reference image layer.2. The apparatus of claim 1 , wherein the reference image layer is selected from among the multiple image layers.3. The apparatus of or claim 1 , wherein the reference image layer is obtained by dividing the multiple image layers into multiple regions claim 1 , selecting the clearest image layer for each region claim 1 , and combining selected ...

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Номер записи: 37

30-01-2020 дата публикации

AUTOMATICALLY GENERATING SYNCHRONIZED VIEW AND LEVEL OF CONCORDANCE OF DIAGNOSTIC EXAMS

Номер: US20200029926A1

Автор: Hartung Ulrich, Neumann Dominik, Schwemmer Chris, Sharma Puneet, Soenius Ruth J.

Принадлежит: Siemens Healthcare GmbH

An embodiment of a method includes providing a first result list indicating a plurality of first anatomic structures and indicating, for each respective first anatomic structure of the plurality of first anatomic structures, a corresponding first severity indicator; providing a second result list indicating, for each respective second anatomic structure of the plurality of the second anatomic structures, a corresponding second severity indicator; providing a relationship matrix indicating a level of interrelatedness between the first anatomic structures and the second anatomic structures; and generating, based on the first result list provided, on the second result list and on the relationship matrix provided, a concordance visualization indicating a respective level of concordance between at least one of the first anatomic structures and the corresponding first severity indicator, and indicating a respective level of concordance between at least one of the second anatomic structures and the corresponding second severity indicator. 1. A computer-implemented method for analyzing medical imaging results , comprising:providing a first result list of a first type of medical imaging exam of a patient, the first result list indicating a plurality of first anatomic structures and indicating, for each respective first anatomic structure of the plurality of first anatomic structures, a corresponding first severity indicator;providing a second result list of a second type of medical imaging exam of the patient, the second result list indicates a plurality of second anatomic structures and indicating, for each respective second anatomic structure of the plurality of the second anatomic structures, a corresponding second severity indicator;providing a relationship matrix indicating a level of interrelatedness between the first anatomic structures and the second anatomic structures; andgenerating, based on the first result list provided, on the second result list and on the ...

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Номер записи: 38

04-02-2021 дата публикации

METHOD, APPARATUS, AND COMPUTER PROGRAM FOR PLANNING IMPLANT SURGERY

Номер: US20210030378A1

Автор: HEO Da Som, Lee Yun Ho, YANG Heui Jung

Принадлежит:

Disclosed herein is a method of supporting implant surgery in a server, which includes obtaining a subject's oral CT image scanned with a guide model inserted into an oral cavity of the subject, the guide model being manufactured to a certain standard to group human teeth in any range so that the teeth belong to at least one group and to cover a tooth position of a corresponding group, the guide model including a marker made of a radiopaque or radiation semipermeable material, loading a library as information about the standard of the guide model, identifying the marker in the oral CT image, and generating a library matching CT image by matching the oral CT image with the library based on the marker included in the library and the marker identified in the oral CT image, and planning implant surgery of the subject using the library matching CT image. 1. A method of supporting implant surgery in a server , comprising:a) obtaining a subject's oral CT image scanned with a guide model inserted into an oral cavity of the subject, the guide model being manufactured to a certain standard to group human teeth in any range so that the teeth belong to at least one group and to cover a tooth position of a corresponding group, the guide model comprising a marker made of a radiopaque or radiation semipermeable material;b) loading a library as information about the standard of the guide model, identifying the marker in the oral CT image, and generating a library matching CT image by matching the oral CT image with the library based on the marker included in the library and the marker identified in the oral CT image; andc) planning implant surgery of the subject using the library matching CT image.2. The method according to claim 1 , comprising claim 1 , after the c) planning implant surgery of the subject claim 1 , d) generating information about a machining region of the guide model to machine the guide model into a surgical guide for the implant surgery according to the plan for ...

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Номер записи: 39

04-02-2021 дата публикации

IMAGE PROCESSING APPARATUS, METHOD, AND PROGRAM

Номер: US20210030384A1

Автор: ARAI Takahisa

Принадлежит: FUJIFILM Corporation

A reconstruction unit generates a plurality of tomographic images representing a plurality of tomographic planes of a subject by reconstructing a plurality of projection images acquired by performing tomosynthesis imaging. A synthesis unit synthesizes the plurality of tomographic images to generate a composite two-dimensional image. A display control unit displays the composite two-dimensional image on a display, and in a case where one tissue of a first tissue and a second tissue that are present in the subject in association with each other is selected in the displayed composite two-dimensional image, emphasizes and displays the selected one tissue and the other tissue associated with the selected one tissue. 1. An image processing apparatus comprising at least one processor , wherein the processor is configured to:generate a plurality of tomographic images representing a plurality of tomographic planes of a subject by reconstructing a plurality of projection images corresponding to a plurality of radiation source positions which are generated by causing an imaging apparatus to perform tomosynthesis imaging in which a radiation source is moved relative to a detection unit to irradiate the subject with radiation at the plurality of radiation source positions according to movement of the radiation source;synthesize the plurality of tomographic images to generate a composite two-dimensional image; anddisplay the composite two-dimensional image on a display, and in a case where one tissue of a first tissue and a second tissue that are present in the subject in association with each other is selected in the displayed composite two-dimensional image, emphasize and displays the selected one tissue and the other tissue associated with the selected one tissue.2. The image processing apparatus according to claim 1 , wherein the processor is configured to generate the composite two-dimensional image by weighted-adding pixel values of pixels corresponding to the plurality of ...

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Номер записи: 40

11-02-2016 дата публикации

METHOD OF ANALYZING HOLLOW ANATOMICAL STRUCTURES FOR PERCUTANEOUS IMPLANTATION

Номер: US20160038246A1

Автор: "ONEILL William", Forbes Michael, Myers Eric, Wang Dee Dee

Принадлежит:

A method of analyzing a hollow anatomical structure of interest for percutaneous implantation. The method comprises acquiring image data of an anatomical region of interest that includes the anatomical structure of interest, and generating a segmented model of the anatomical region of interest using the acquired image data. The method further comprises obtaining image(s) of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model thereof, identifying one or more pertinent landmarks of the anatomical structure of interest in the acquired image(s), and measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the acquired image(s) to determine an anatomical structure size. The method still further comprises reconciling the anatomical structure size and an implant size. 1. A method of analyzing a hollow anatomical structure of interest for percutaneous implantation , comprising the steps of:acquiring image data relating to an anatomical region of interest that at least partially includes the anatomical structure of interest;generating a segmented model of the anatomical region of interest using the acquired image data;obtaining one or more images of the anatomical structure of interest by sectioning out intervening anatomical structures from the segmented model;identifying one or more pertinent landmarks of the anatomical structure of interest in the one or more acquired images;measuring at least one of a circumference, a maximal diameter, or a minimal diameter of one or more features of the anatomical structure of interest contained in the one or more acquired images to determine an anatomical structure size; andreconciling the anatomical structure size and an implant size.2. The method of claim 1 , wherein he acquired image data comprises computed tomography (CT) data and the segmented model comprises a ...

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Номер записи: 41

31-01-2019 дата публикации

METHODS AND SYSTEMS FOR IDENTIFYING ANATOMICAL LANDMARKS IN IMAGE DATA

Номер: US20190035081A1

Автор: Hu Yangqiu, Lenz Nathaniel, Mines Angela

Принадлежит:

Systems, devices, and methods are described for locating and identifying anatomical landmarks, such as ligament attachment points, in image data. These systems, devices, and methods may provide an oblique plane that contains an anatomical landmark such as a ligament attachment point to the tibia. For example, the position at which the anterior cruciate ligament (ACL), medial collateral ligament (MCL) posterior cruciate ligament (PCL), or patellar tendon attaches to the tibia may be identified. The systems, devices, and methods allow for tracing of an anatomical landmark to generate a 3-D marking on a 3-D surface model of a patient's bone. The attachment points may be useful landmarks for patient-matched instrumentation. 115-. (canceled)16. A system for locating anatomical landmarks in image data , comprising: [ ["receive user inputs identifying a first point and a second point along a portion of soft tissue of the patient represented in the image data representative of the patient's joint;", 'receive user inputs tracing a feature of the portion of soft tissue of the patient having a longitudinal axis;, 'one or more graphical user interface units configured to, identify one of a line or a curve that connects the first point and the second point along a portion of soft tissue of the patient;', 'identify a set of planes comprising (i) an oblique plane intersecting a normal to the line or the curve and (ii) at least one other plane parallel to the oblique plane;', "generate, using the image data representative of the patient's joint, a set of reformatted images;", "generate a 3-D model representative of the patient's joint using the set of reformatted images;", "generate a 3-D marking representing the traced feature of the portion of soft tissue of the patient on the 3-D model representative of the patient's joint; and"], "one or more processors coupled to the device configured to receive image data representative of a patient's joint and the one or more graphical user ...

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Номер записи: 42

31-01-2019 дата публикации

Feature-based registration method

Номер: US20190035095A1

Автор: Dorian Averbuch

Принадлежит: COVIDIEN LP

Methods for registering a three-dimensional model of a body volume to a real-time indication of a sensor position that involve analyzing scanned and sensed voxels and using parameters or thresholds to identify said voxels as being either tissue or intraluminal fluid. Those voxels identified as fluid are then used to construct a real-time sensed three-dimensional model of the lumen which is then compared to a similarly constructed, but previously scanned model to establish and update registration.

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Номер записи: 43

18-02-2016 дата публикации

METHOD AND APPARATUS FOR ELECTRONIC CORRECTION OF DIGITAL PROJECTION DATA

Номер: US20160045179A1

Автор: Bartl Peter

Принадлежит:

A method and an apparatus for creating a correction map for electronic correction of digital projection data from which it is possible to reconstruct a tomosynthetic 3D X-ray image. Furthermore, a method and apparatus are described for electronic correction of digital projection data. In order to allow particularly simple correction of digital projection data, the creation of the correction map includes a reconstruction of the lowermost layer of the 3D X-ray image to be reconstructed from the digital projection data, which lowermost layer corresponds to the detector plane of the digital X-ray detector. 1. An X-ray method , comprising:recording digital projection data with a digital X-ray detector having a detector plane, the projection data being suitable for reconstruction of a tomosynthetic 3D X-ray image having layers;creating a correction map for an electronic correction of the digital projection data recorded by the digital X-ray detector, the step of creating the correction map including a reconstruction of a lowermost layer of the 3D X-ray image from the digital projection data, the lowermost layer corresponding to the detector plane of the digital X-ray detector.2. The method according to claim 1 , which comprises reconstructing the lowermost layer by way of an unfiltered reconstruction method.3. The method according to claim 1 , wherein the 3D X-ray image is an image of an object to be examined.4. The method according to claim 1 , which comprises using an image representing the lowermost layer as a correction map or to create a correction map.5. The method according to claim 4 , which comprises using the image of the lowermost layer as a gain correction map or to create a gain correction map.6. An apparatus for creating a correction map for electronic correction of digital projection data claim 4 , the apparatus comprising:an input for receiving digital projection data recorded by a digital X-ray detector, wherein the projection data are suitable for a ...

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Номер записи: 44

18-02-2016 дата публикации

Systems, methods, and interfaces for configuring cardiac therapy

Номер: US20160045732A1

Автор: Brian Schousek, Eric Schilling, Nathan A. Grenz, Ryan LAHM

Принадлежит: MEDTRONIC INC

Systems, methods, and interfaces are described herein for assisting in a user in configuring cardiac therapy. A projection of a phrenic nerve stimulation map may be projected on a graphical depiction of a portion of a patient's heart. The phrenic nerve stimulation map may indicate to a user the regions of the patient's heart that may have a likelihood of stimulating the patient's phrenic nerve.

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Номер записи: 45

15-02-2018 дата публикации

MEDICAL-INFORMATION PROCESSING APPARATUS AND X-RAY CT APPARATUS

Номер: US20180042569A1

Автор: HIROHATA Kenji, Sakaguchi Takuya

Принадлежит: Toshiba Medical Systems Corporation

A medical-information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires medical image data that is obtained during imaging on the subject in a resting state in the time phase where the relationship between the volume of blood flow and the pressure in a blood vessel in the cardiac cycle of the subject indicates a proportional relationship. The processing circuitry extracts the structure of a blood vessel, included in the medical image data, applies fluid analysis to the structure of the blood vessel to obtain a first index value, which is obtained based on the pressure in the blood vessel on the upstream side of a predetermined position within the blood vessel and the relation equation between the volume of blood flow and the pressure in the blood vessel in the resting state, and a second index value, which is obtained based on the pressure in the blood vessel on the downstream side of the predetermined position and the relation equation, and calculates the pressure ratio, which is the ratio of the first index value to the second index value. 1. A medical-information processing apparatus comprising processing circuitry configured toacquire medical image data that is obtained during imaging on a subject in a resting state in a time phases where a relationship between a volume of blood flow and a pressure in a blood vessel in a cardiac cycle of the subject indicates a proportional relationship, andextract a structure of a blood vessel, included in the medical image data, applies fluid analysis to the structure of the blood vessel to obtain a first index value, which is obtained based on a pressure in the blood vessel on an upstream side of a predetermined position within the blood vessel and a relation equation between a volume of blood flow and a pressure in the blood vessel in the resting state, and a second index value, which is obtained based on a pressure in the blood vessel on a downstream side of the ...

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Номер записи: 46

15-02-2018 дата публикации

SYSTEM AND METHOD FOR INCREASING THE ACCURACY OF A MEDICAL IMAGING DEVICE

Номер: US20180042570A1

Автор: Boll Morten, BRANDT Sami, HOLME Jens Peter, Öjelund Henrik, SØRENSEN Thomas Sangild

Принадлежит: 3Shape A/S

A method for improving the accuracy of a digital medical model of a part of a patient, the method includes obtaining a set of at least 2 medical images of the patient, where an element comprising a predefined geometry and/or predefined information was attached to the patient during the recording of the medical images; obtaining at least 2 tracking images taken with at least one camera having a known positional relationship relative to the medical imaging device, said tracking images depicting at least part of the element; determining any movement of the element between acquisition of the at least 2 tracking images; and generating the digital medical model from the acquired medical images, wherein the determined movement of the element is used to compensate for any movement of the patient between the acquisition of the medical images. 1. A method for improving the accuracy of a digital medical model of a part of a patient , the medical model comprising at least 2 medical images recorded with a medical imaging device , the method comprising:obtaining a set of at least 2 medical images of the patient, where an element comprising a predefined geometry and/or predefined information was attached to the patient during the recording of the medical images;obtaining at least 2 tracking images taken with at least one camera having a known positional relationship relative to the medical imaging device, said tracking images depicting at least part of the element;determining any movement of the element between acquisition of the at least 2 tracking images; andgenerating the digital medical model from the acquired medical images, wherein the determined movement of the element is used to compensate for any movement of the patient between the acquisition of the medical images.2. The method according to claim 1 , wherein the predefined information of the element comprises at least one fiducial marker.3. The method according to claim 1 , wherein the predefined information of the ...

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Номер записи: 47

18-02-2016 дата публикации

Classifying Image Data for Vasospasm Diagnosis

Номер: US20160048959A1

Автор: Kowarschik Markus, Lautenschläger Stefan

Принадлежит:

In order to classify a cerebral vascular segment as normal or pathological, a time-series of three dimensional (3D) images representing the cerebral vascular segment is generated. A length of the cerebral vascular segment is determined, and a blood flow speed through the cerebral vascular segment is determined based on the length and the generated time-series of 3D images. The cerebral vascular segment is categorized based on the determined blood flow, and a representation of the cerebral vascular segment is displayed based on the categorization. 1. A method for classifying image data representing a volume , the method comprising:generating, by an imaging device, a plurality of two dimensional (2D) datasets, the plurality of 2D datasets representing the volume with a contrast medium injected into the volume;generating, by a processor, a three dimensional (3D) dataset representing the volume based on the plurality of 2D datasets;generating, by the processor, a time-series of 3D images of the volume based on the 3D dataset representing the volume, and the plurality of 2D datasets;determining a length of a portion of the 3D dataset; anddetermining a speed of blood flow within the volume based on the generated time-series of 3D images of the volume and the determined length of the portion of the 3D dataset.2. The method of claim 1 , further comprising:generating, by the imaging device, a plurality of first 2D datasets, the plurality of first 2D datasets representing the volume without a contrast medium injected into the volume, wherein the plurality of 2D datasets are a plurality of second 2D datasets, wherein generating the 3D dataset representing the volume comprises generating the 3D dataset representing the volume based on the plurality of first 2D datasets and the plurality of second 2D datasets, and wherein generating the time-series of 3D images of the volume comprises generating the time-series of 3D images of the volume based on the 3D dataset representing the ...

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Номер записи: 48

15-02-2018 дата публикации

Medical Image Fusion with Reduced Search Space

Номер: US20180047183A1

Автор: Berlinger Kajetan, KAISER Hagen

Принадлежит:

A computer implemented method for performing fusion of 3D image data, which represent at least a part of a patient's body, with two 2D images of the patient's body with a known spatial relation between the viewing directions of the 2D images, comprising the steps of: -acquiring the 3D image data, -acquiring the two 2D images, -calculating two virtual images from the 3D image data, the two virtual images corresponding to the two 2D images, -classifying the two 2D images into a primary and a secondary image, -determining a primary alignment between the primary image and the corresponding virtual image such that they match, -calculating a spatial axis relative to the viewing directions of the two 2D images from the primary alignment and a predetermined point which is imaged in the virtual image which corresponds to the primary image, wherein the spatial axis is a line in space on which the predetermined point lies, and -performing fusion of the 3D image data with the two 2D images based on the calculated spatial axis in order to obtain a virtual position of the 3D image data in space. 115.-. (canceled)16. A computer implemented method for performing fusion of 3D image data with two 2D images , comprising;acquiring 3D image data;acquiring two 2D images;calculating two virtual images from the 3D image data, the two virtual images corresponding to the two 2D images;classifying the two 2D images into a primary and a secondary image;determining a primary alignment between the primary image and the corresponding virtual image so they substantially match;calculating a spatial axis relative to the viewing directions of the two 2D images from the primary alignment and a predetermined point which is imaged in the virtual image which corresponds to the primary image, wherein the spatial axis is a line in space on which the predetermined point lies; andperforming fusion of the 3D image data with the two 2D images based on the calculated spatial axis in order to obtain a virtual ...

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Номер записи: 49

25-02-2016 дата публикации

COMPRESSION DEVICE FOR X-RAY AND MECHANICAL IMAGING OF A BREAST

Номер: US20160051207A1

Автор: Dustler Magnus, Förnvik Daniel, Timberg Pontus, Zackrisson Sophia

Принадлежит:

The invention relates to a compression device () for assisting x-ray examination of an object. The compression device () comprises a support plate () adapted to receive thereon the object to be examined; a compression plate (); and a displacement device () arranged to interact with the support plate () and the compression plate () to allow modification of the spacing (A) between the support plate () and the compression plate () to compress the object there between. A plurality of pressure sensors () are distributed across the support plate () and/or the compression plate () for sensing local pressure distribution across the compression area of the compressed object. The displacement device () is arranged to set and adapt the spacing (A) between the support plate () and the compression plate () angularly and linearly as a result of the sensed local pressure distribution across the compression area. 1. Compression device for assisting examination of an object using a field of penetrating radiation , comprisinga support plate adapted to receive thereon the object to be examined;a compression plate;a displacement device arranged to interact with the support plate and the compression plate to allow modification of the spacing between the support plate and the compression plate to compress the object there between; anda plurality of pressure sensors distributed across the support plate and/or the compression plate for sensing local pressure distribution across the compression area of the compressed object, whereinthe displacement device is arranged to set and adapt the spacing (A) between the support plate and the compression plate angularly and linearly as a result of the sensed local pressure distribution across the compression area.2. A compression device according to claim 1 , wherein the spacing between the support plate and the compression plate can be adapted angularly in at least two degrees of freedom.3. A compression device according to claim 1 , wherein the ...

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Номер записи: 50

08-05-2014 дата публикации

X-ray Photography Apparatus

Номер: US20140126687A1

Автор: Hideki Yoshikawa, Makoto Honjo

Принадлежит: J Morita Manufaturing Corp

An X-ray photography apparatus including: a turning arm that supports an X-ray generator and an X-ray detector which are opposed to each other so that the head of a patient can be interposed therebetween, and a moving mechanism that includes a turning part and a moving part. The turning part turns the turning arm about a turning axis with respect to the head. The moving part moves the turning arm relative to the head in a direction perpendicular to the turning axis. The X-ray photography apparatus also includes: an image processor that generates an X-ray image, a photographic region designation part that designates part of a row of teeth along a dental arch as a pseudo intraoral radiography region, and an X-ray forming mechanism that changes the irradiation direction in which the head is irradiated with an X-ray relative to the axial direction of the body axis of the patient.

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Номер записи: 51

13-02-2020 дата публикации

System and method for increasing the accuracy of a medical imaging device

Номер: US20200046308A1

Автор: Henrik ÖJELUND, Jens Peter HOLME, Morten BOLL, Sami Brandt, Thomas Sangild SØRENSEN

Принадлежит: 3Shape AS

A method for improving the accuracy of a digital medical model of a part of a patient, the method includes obtaining a set of at least 2 medical images of the patient, where an element comprising a predefined geometry and/or predefined information was attached to the patient during the recording of the medical images; obtaining at least 2 tracking images taken with at least one camera having a known positional relationship relative to the medical imaging device, said tracking images depicting at least part of the element; determining any movement of the element between acquisition of the at least 2 tracking images; and generating the digital medical model from the acquired medical images, wherein the determined movement of the element is used to compensate for any movement of the patient between the acquisition of the medical images.

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Номер записи: 52

03-03-2022 дата публикации

3D SEGMENTATION FOR MANDIBLE AND MAXILLA

Номер: US20220068039A1

Автор: Capron-Richard Sabrina, JACOB Jean-Pascal, REYNARD Delphine, RIPOCHE Xavier, ROBERTS Gael

Принадлежит:

A method for registering a 3D mesh and a 3D volume image of a patients teeth obtains a 3D volume image of the patients teeth in an occlusion position, the 3D volume image containing at least one jaw portion. A contour surface is generated to form the 3D mesh corresponding to at least one of lingual and vestibular surfaces of the teeth from the 3D volume image. A registered mesh is provided in an occlusion position, the registered mesh having at least one of the vestibular and lingual surfaces. The registered mesh is registered with the generated contour surface content and displayed with the 3D volume image. 1. A method for registering a 3D mesh and a 3D volume image of a patient's teeth comprising:a) obtaining a 3D volume image of the patient's teeth in an occlusion position, the 3D volume image containing at least one jaw portion;b) generating contour surface content corresponding to at least one of lingual and vestibular surfaces of the teeth from the 3D volume image;c) providing a registered 3D mesh in an occlusion position, the registered mesh comprising at least a portion of a maxillary jaw and a mandibulary jaw, each of the jaws comprising at least one of the vestibular and lingual surfaces;d) registering the registered 3D mesh with the generated contour surface content.2. A method for registering a 3D mesh and a 3D volume image of a patient's teeth further comprising at least one of displaying , storing , transmitting the registered 3D mesh with the 3D volume image.3. The method of wherein the 3D volume image is obtained from a computed tomography apparatus.4. The method of wherein providing the registered 3D mesh comprises:obtaining a first 3D mesh comprising at least a portion of the maxillary jaw, the first 3D mesh comprising at least a vestibular part and a lingual part;obtaining a second 3D mesh comprising at least a portion of the mandibular jaw, the second 3D mesh comprising at least a vestibular part and a lingual part;registering the first 3D mesh ...

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Номер записи: 53

10-03-2022 дата публикации

METHOD AND APPARATUS FOR DISPLAYING OPERATION OF IMAGE POSITIONING, ELECTRONIC DEVICE, AND STORAGE MEDIUM

Номер: US20220071572A1

Автор: Zhang Liwei

Принадлежит:

A method and apparatus for displaying operation of image positioning, an electronic device, and a storage medium are provided. The method includes: in response to a selection operation for any one of a plurality of operation areas, obtaining an operation position; triggering a corresponding operation manner at the operation position; obtaining, according to a correspondence relationship for the operation position among the plurality of operation areas, a linkage display result, based on the operation manner, for the plurality of operation areas. 1. A method for displaying operation of image positioning , comprising:in response to a selection operation for any one of a plurality of operation areas, obtaining an operation position;triggering a corresponding operation manner at the operation position; andobtaining, according to a correspondence relationship for the operation position among the plurality of operation areas, a linkage display result, based on the operation manner, for the plurality of operation areas.2. The method according to claim 1 , wherein before triggering the corresponding operation manner at the operation position claim 1 , the method further comprises:determining a position of the operation position relative to an operation area indication object to obtain a determination result; anddetermining the operation manner according to the determination result.3. The method according to claim 1 , wherein after triggering the corresponding operation manner at the operation position claim 1 , the method further comprises:in response to a position change of the operation position, switching the operation manner to an operation manner after the position change,wherein different operation manners correspond to different operation tool display states respectively.4. The method according to claim 3 , wherein in response to the position change of the operation position claim 3 , switching the operation manner to the operation manner after the position change ...

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Номер записи: 54

10-03-2022 дата публикации

MEDICAL IMAGE-PROCESSING APPARATUS, X-RAY CT APPARATUS, AND MEDICAL IMAGE-PROCESSING METHOD PERFORMING FLUID ANALYSIS TO SWITCH DISPLAYED COLOR INFORMATION

Номер: US20220071584A1

Автор: Sakaguchi Takuya

Принадлежит: Canon Medical Systems Corporation

A medical image-processing apparatus according to embodiments includes processing circuitry. The processing circuitry is configured to acquire image data including a blood vessel of a subject. The processing circuitry is configured to acquire an index value relating to blood flow at each position of the blood vessel by performing fluid analysis of a structure of the blood vessel included in the acquired image data. The processing circuitry is configured to acquire information indicating a display condition of the index value, as switching information to switch a display mode at displaying the index value. The processing circuitry is configured to generate a result image in which pixel values reflecting the index value are assigned in a display mode according to the switching information, for an image indicating a blood vessel of the subject. The processing circuitry is configured to cause a display to display the result image. 1 acquire image data including a blood vessel of a subject,', 'acquire an index value relating to blood flow at each position of the blood vessel by performing fluid analysis of a structure of the blood vessel included in the acquired image data,', 'acquire information indicating a display condition of the index value, as switching information to switch a display mode at displaying the index value,', 'generate a result image in which pixel values reflecting the index value are assigned in a display mode according to the switching information, for an image indicating a blood vessel of the subject, and', 'cause a display to display the result image., 'processing circuitry configured to'}. A medical image-processing apparatus comprising This application is a continuation of U.S. Ser. No. 15/824,187, which claims the benefit of priority from Japanese Patent Application No. 2016-230530, filed on Nov. 28, 2016 and Japanese Patent Application No. 2017-223826, Filed on Nov. 21, 2017; the entire contents of which are incorporated herein by reference. ...

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Номер записи: 55

01-03-2018 дата публикации

SEGMENTING AN ANGIOGRAPHY USING AN EXISTING THREE-DIMENSIONAL RECONSTRUCTION

Номер: US20180055471A1

Автор: Redel Thomas

Принадлежит:

A method for segmenting a two-dimensional angiographic recording of a vessel of a body using a computing apparatus includes providing a three-dimensional reconstruction of the vessel of the body to the computing apparatus. The two-dimensional angiographic recording of the vessel of the body is provided on the computing apparatus. The three-dimensional reconstruction of the vessel of the body is registered with the two-dimensional recording of the vessel of the body. Spatial information of the three-dimensional reconstruction is projected onto the two-dimensional recording, and the two-dimensional recording is segmented using the spatial information projected onto the two-dimensional recording. 1. A method for segmenting a two-dimensional angiographic recording of a vessel of a body by a computing apparatus , the method comprising:providing a three-dimensional reconstruction of the vessel of the body on the computing apparatus;providing the two-dimensional angiographic recording of the vessel of the body on the computing apparatus;registering the three-dimensional reconstruction of the vessel of the body with the two-dimensional angiographic recording of the vessel of the body;projecting spatial information of the three-dimensional reconstruction onto the two-dimensional angiographic recording; andsegmenting the two-dimensional angiographic recording using the spatial information projected onto the two-dimensional angiographic recording.2. The method of claim 1 , wherein the spatial information comprises at least one centerline of the vessel of the body that is projected onto the two-dimensional angiographic recording claim 1 , and based on the at least one projected centerline claim 1 , a centerline for the vessel of the body is determined on the two-dimensional angiographic recording and is used in the segmentation.3. The method of claim 2 , wherein the at least one projected centerline is determined as a centerline for the vessel of the body on the recording and ...

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Номер записи: 56

05-03-2015 дата публикации

SYSTEM, METHOD, AND COMPUTER ACCESSIBLE MEDIUM FOR VOLUMETRIC TEXTURE ANALYSIS FOR COMPUTER AIDED DETECTION AND DIAGNOSIS OF POLYPS

Номер: US20150065868A1

Автор: LIANG Jerome Zheng, LU HONGBING, ZHANG Guopeng

Принадлежит: THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY NEW YORK

A computer-based method for diagnosing a region of interest within an anatomical structure having the steps of receiving a 3D volumetric representation of the anatomical structure, and identifying at least one volume of interest and volume of normal of the anatomical structure. A first feature set can be generated based on a density, a gradient and a curvature of the volume of interest, and the first feature set can be compared to a second feature set to diagnose the region of interest to at least one a plurality of pathology types. 1. A computer-based method for diagnosing a region of interest within an anatomical structure , comprising:receiving a 3D volumetric representation of the anatomical structure;identifying at least one volume of interest and volume of normal of the anatomical structure;determining a density, a gradient and a curvature of the volume of interest;generating a first feature set based on the density, the gradient and the curvature; andcomparing the first feature set to a second feature set to diagnose the region of interest to at least one of a plurality of pathology types.2. The computer-based method of claim 1 , wherein the generation of the first feature set comprises combining the density claim 1 , the gradient and the curvature to produce the first feature set.3. The computer-based method of claim 2 , wherein at least one of the density claim 2 , the gradient or the curvature is determined using a 3D Haralick model.4. The computer-based method of claim 3 , wherein the gradient is determined using a gray-level gradient co-occurrence matrix.5. The computer-based method of claim 3 , wherein the curvature is determined using a gray-level curvature co-occurrence matrix.6. The computer-based method of claim 3 , wherein the density is determined using a gray-level co-occurrence matrix.7. The computer-based method of claim 1 , wherein the second feature set is generated by manually analyzing a plurality of regions of interest.8. The computer- ...

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Номер записи: 57

08-03-2018 дата публикации

SIMULTANEOUSLY DISPLAYING MEDICAL IMAGES

Номер: US20180064409A1

Автор: Kabus Sven, Klinder Tobias, SCHMIDT-RICHBERG ALEXANDER, Wiemker Rafael

Принадлежит:

A system and method are provided for displaying medical images. A first viewport is generated which shows a part of a first medical image which shows a region of interest. A second viewport is generated which shows a part of a second medical image which shows a corresponding region of interest, e.g., representing a same anatomical structure or a same type of anatomical structure. In order to establish this ‘synchronized’ display of regions of interest, a displacement field is estimated between the first medical image and the second medical image. However, the displacement field is not used to deform the second medical image. Rather, the displacement field is used to identify the corresponding region of interest and thereby which part of the second medical image is to be shown. It is thus avoided that the second medical image itself is deformed, which would typically also deform the region of interest and thereby impair its assessment. 1100. A system () for displaying medical images , comprising:{'b': 120', '022', '024, 'an image data interface () configured to access image data of a first medical image () and a second medical image ();'}{'b': '130', 'a memory () comprising instruction data representing a set of instructions;'}{'b': '160', 'claim-text': [{'b': 042', '220', '224, 'receive selection data () indicative of a region of interest (-) in the first medical image;'}, {'b': 062', '314', '200, 'generate display data () comprising a first viewport (), the first viewport comprising a part () of the first medical image which shows the region of interest;'}, 'identify a corresponding region of interest in the second medical image; and', {'b': 310', '312', '202, 'generate the display data to additionally comprise a second viewport (, ), the second viewport comprising a part () of the second medical image which shows the corresponding region of interest;'}], 'a processor () configured to communicate with the image data interface and the memory and to execute the set ...

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Номер записи: 58

09-03-2017 дата публикации

Tracking Soft Tissue in Medical Images

Номер: US20170065832A1

Автор: Berlinger Kajetan, Froehlich Stephan

Принадлежит:

The present disclosure is directed to a system, method and apparatus for tracking an anatomical body part in a series of x-ray images. The anatomical body part moves due to a vital movement, such as breathing motion of the thorax. The anatomical body part is defined in a CT image acquired beforehand and is associated with a known movement phase during the vital movement. The series of x-ray images of the moving anatomical body part is taken. The movement phase associated with each one of the x-ray images is determined. In one implementation, the system may track the body part movement using external infrared-reflecting markers and a navigation system while taking a series of x-ray images and time-stamping the x-ray images and the positional information for the body part. The time stamps relate each one of the x-ray images with a specific movement phase of the body part. The specific x-ray image being associated with the same movement phase as the CT image is determined and the representation of the anatomical body part defined in the CT image can be determined in the x-ray image by comparing the CT image with the specific x-ray image. The specific x-ray image may be compared to the other x-ray images to find the anatomical body part in those x-ray images and preferably highlight it to be easily recognized by a user. 115.-. (canceled)16. A system , comprising a computer having a processor configured to execute a computer-implemented method of determining the representation of an anatomical body part of a patient in a sequence of medical images , the anatomical body part being subject to a vital movement of the patient , the method comprising executing , on the processor of the computer , steps of:acquiring, at the processor, advance medical image data comprising a time-related advance medical image having a representation of the anatomical body part in a specific movement phase;acquiring, at the processor, current medical image data describing a sequence of current ...

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Номер записи: 59

28-02-2019 дата публикации

METHOD FOR OPERATING AN IMAGING X-RAY DEVICE, IN PARTICULAR A COMPUTED TOMOGRAPHY SYSTEM, AN X-RAY DEVICE AND A COMPUTER PROGRAM PRODUCT

Номер: US20190066302A1

Автор: RITTER Andre

Принадлежит: Siemens Healthcare GmbH

A method for operating an imaging X-ray device, and the imaging X-ray device, are disclosed for acquisition of projection images. In an embodiment, X-rays are emitted from at least one X-ray source and, after passing through a tunnel-shaped examination region, acquired by at least one X-ray detector. At least the X-ray source is moved on a circular path or a circular arc section about a center of rotation in a plane of rotation. Herein, a patient couch is moved in a feed direction extending perpendicularly to the plane of rotation. According to at least one embodiment of the invention, a pitch factor is specified characterizing a feed of the patient couch in each unit of time as a function of an at least approximately ascertained position and/or extension of a region to be mapped in the plane of rotation with respect to the center of rotation. 1. A method for operating an imaging X-ray device for acquisition of a projection image , at least one X-ray source of the imaging X-ray device being configured to emit X-rays , and at least one X-ray detector of the imaging X-ray device being configured to acquire the X-rays after passing through a tunnel-shaped examination region , the at least the X-ray source being movable on a circular path or a circular arc section about a center of rotation in a plane of rotation during acquisition of a projection image , and a patient couch being movable in a feed direction extending perpendicularly to the plane of rotation , the method comprising:specifying a pitch factor, characterizing a feed movement of the patient couch during the acquisition of the projection image, as a function of an at least approximately ascertained at least one of position and extension of a region to be mapped in a plane of rotation with respect to the center of rotation.2. The method of claim 1 , wherein the pitch factor is specified such that complete three-dimensional reconstruction of a field of view to be mapped via filtered back projection is enabled ...

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Номер записи: 60

29-05-2014 дата публикации

SYSTEM AND METHOD FOR FOUR DIMENSIONAL ANGIOGRAPHY AND FLUOROSCOPY

Номер: US20140148694A1

Автор: Mistretta Charles A., Strother Charles M.

Принадлежит:

A method for generating time-resolved 3D medical images of a subject by imparting temporal information from a time-series of 2D medical images into 3D images of the subject. Generally speaking, this is achieved by acquiring image data using a medical imaging system, generating a time-series of 2D images of a ROI from at least a portion of the acquired image data, reconstructing a 3D image substantially without temporal resolution from the acquired image data, and selectively combining the time series of 2D images with the 3D image. 1. A system for producing a time-resolved three-dimensional image of a subject , the system comprising: receive image projection data for the subject acquired using a medical imaging system during a single contrast injection, the medical imaging system including a single source/single detector system;', 'generate a time-series of two-dimensional images from at least a portion of the acquired image projection data;', 'reconstruct a three-dimensional image substantially without temporal resolution from at least a portion of the acquired image projection data;', 'select, for each two-dimensional image in the time-series, a current image and a paired image;', 'multiply, for each two-dimensional image in the time-series, the current image into the three-dimensional image substantially without temporal resolution to determine a first product value;', 'multiply, for each two-dimensional image in the time-series, the paired image into the three-dimensional image substantially without temporal resolution to determine a second product value;', 'take the square root of the multiplication of the first and second product values to produce a frame of a time-resolved three-dimensional image having a signal-to-noise ratio substantially higher than a signal-noise-ratio of the acquired image projection data, wherein one or more voxels in the frame is nullified based on the current image or the paired image; and', 'combine frames of the time-resolved three- ...

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Номер записи: 61

17-03-2016 дата публикации

Method and system for image processing and patient-specific modeling of blood flow

Номер: US20160073991A1

Автор: Charles A. Taylor

Принадлежит: HeartFlow Inc

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model.

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Номер записи: 62

15-03-2018 дата публикации

METHOD AND SYSTEM FOR IMAGE PROCESSING TO DETERMINE BLOOD FLOW

Номер: US20180071027A1

Автор: Taylor Charles A.

Принадлежит: HEARTFLOW, INC.

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model. 1184-. (canceled)185. A medical image diagnostic apparatus for processing medical images , comprising:processing circuitry configured to acquire data of a plurality of Fractional Flow Reserve (FFR) distribution maps comprising at least two time phases regarding a coronary artery; anda display configured to display a representation of the at least one FFR distribution map in phase to the at least one FFR distribution map, wherein the processing circuitry restricts display objects displayed by the display for the representation of the at least one FFR distribution map based on the at least one FFR distribution map.186. The medical image diagnostic apparatus according to claim 185 , wherein the processing circuitry acquires data of a plurality of morphological images comprising the at least two time phases claim 185 , and converts the at least one FFR distribution map into a at least one corresponding color map claim 185 , respectively claim 185 , and the display displays a plurality of superimposed images claim 185 , as the representation of the at least one FFR distribution map claim 185 , obtained by superposing the at least one color map and the plurality of morphological images respectively corresponding in phase.187. The medical image diagnostic apparatus according to claim 186 , wherein the processing circuitry restricts display ...

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Номер записи: 63

07-03-2019 дата публикации

METHOD AND APPARATUS FOR DRAWING A CRANIAL IMAGE TRAJECTORY

Номер: US20190069867A1

Автор: CHEN Minfeng, LEI Jing

Принадлежит:

The present disclosure discloses a method for drawing a cranial image trajectory. The method comprises: providing, by a processor, at least one trajectory pattern template for parts of a standard cranial anatomy; acquiring, by a radiation image device, at least one cranial image of a patient, superimposing, by the processor, the trajectory pattern template of each part of the standard cranial anatomy onto the corresponding position of the patient's cranial image, and acquiring the trajectory pattern of the cranial image; and if a deviation is determined between the shape of the respective structure on the trajectory pattern of the patient's cranial image and that of the trajectory pattern template of each part of the standard cranial anatomy, adjusting the shape of the corresponding trajectory pattern template in the cranial anatomy so as to be the same as the respective structure in the cranial image by the processor. 1. A method for drawing a cranial image trajectory , comprising:providing, by a processor, at least one trajectory pattern template for parts of a standard cranial anatomy;acquiring, by a radiation image device, at least one cranial image of a patient, superimposing, by the processor, the trajectory pattern template of each part of the standard cranial anatomy onto the corresponding position of the patient's cranial image, and acquiring the trajectory pattern of the cranial image; andif a deviation is determined between the shape of the respective structure on the trajectory pattern of the patient's cranial image and that of the trajectory pattern template of each part of the standard cranial anatomy, adjusting the shape of the corresponding trajectory pattern template in the cranial anatomy so as to be the same as the respective structure in the cranial image by the processor.2. The method according to claim 1 , wherein providing at least one trajectory pattern template for parts of a standard cranial anatomy claim 1 , comprises:acquiring at least ...

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Номер записи: 64

05-03-2020 дата публикации

Position measurement device, treatment system including the same, and position measurement method

Номер: US20200069971A1

Автор: Hirohisa Mizota, Kota Sasaki, Yuusuke KOURAI

Принадлежит: HITACHI LTD

To provide a position measurement device capable of measuring a target position with high accuracy according to an ultrasonic image during treatment, a treatment system including the device, and a position measurement method. A first image is constructed according to an ultrasonic waveform acquired by an ultrasonic sensor 104 C, a three-dimensional image acquired in advance and the first image are collated on the basis of sensor position information acquired by a sensor position measurement unit 105 to calculate sound velocities of each body tissue of a patient 100 , a second image is constructed according to the ultrasonic waveform acquired by the ultrasonic sensor 104 C using the calculated sound velocities of each body tissue of the patient 100 , and a target tissue position is calculated according to the second image.

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Номер записи: 65

17-03-2016 дата публикации

Method and apparatus for projection image generation from tomographic images

Номер: US20160078645A1

Автор: Anna Jerebko, Michael Kelm, Shiras Abdurahman

Принадлежит: SIEMENS AG

A method for generating a projection image from tomographic images first captures (S 101 ) a number of stacked two-dimensional tomographic images representing a tomographic volume. The pixels of the stacked two-dimensional tomographic images are weighted (S 102 ) along a number of projection beams through the tomographic volume with weighting factors that are chosen under the constraint that the sum of all squared weighting factors for each individual projection beam is between a given lower limit and a given upper limit. Then the weighted pixels are summed up (S 103 ) along the number of projection beams for generating the two-dimensional projection image.

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Номер записи: 66

15-03-2018 дата публикации

Image data processing

Номер: US20180075642A1

Автор: Cristian Lorenz, Martin Bergtholdt, Rafael Wiemker, Tobias Klinder

Принадлежит: Koninklijke Philips NV

A method for processing image data includes obtaining a first set of 3D volumetric image data. The 3D volumetric image data includes a volume of voxels. Each voxel has an intensity. The method further includes obtaining a local voxel noise estimate for each of the voxels of the volume. The method further includes processing the volume of voxels based at least on the intensity of the voxels and the local voxel noise estimates of the voxels. An image data processor ( 124 ) includes a computer processor that at least one of: generate a 2D direct volume rendering from first 3D volumetric image data based on voxel intensity and individual local voxel noise estimates of the first 3D volumetric image data, or registers second 3D volumetric image data and first 3D volumetric image data based at least one individual local voxel noise estimates of second and first 3D volumetric image data sets.

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Номер записи: 67

14-03-2019 дата публикации

SYSTEMS AND METHODS FOR ULTRA LOW DOSE CT FLUOROSCOPY

Номер: US20190076102A1

Автор: Lee Fred T., Mistretta Charles A.

Принадлежит:

According to at least one aspect, a method for computed tomography (CT) fluoroscopy can include acquiring a plurality of pairs of projections of an interventional device using CT fluoroscopy. Each pair of the projections can be obtained at a predetermined first angular separation greater than a second angular separation used for a full dose CT scan of a target object, by rotating a gantry of a CT scanner. The method can include identifying a position of the interventional device in real time for each pair of the projections, using back-projection of images of the interventional device from the respective pair of projections. The method can include superimposing an image of the interventional device on a 3-D image of an anatomical region at an identified position of the interventional device. 1. A method for computed tomography (CT) fluoroscopy , the method comprising:acquiring a plurality of pairs of projections of an interventional device for a target object using CT fluoroscopy, each pair of the projections obtained at a predetermined first angular separation that is greater than a second angular separation used for a full dose CT scan of the target object, by rotating a gantry of a CT scanner, the full dose CT scan having a number of acquired projections per gantry rotation being at least two times higher than that from the acquisition of the pairs of projections of the interventional device;identifying a position of the interventional device in real time for each pair of the projections, using back-projection of images of the interventional device from the respective pair of projections;forming at least one two dimensional (2-D) or three dimensional (3-D) image of the interventional device using the plurality of pairs of projections and the identified positions of the interventional device;superimposing the at least one 2-D or 3-D image of the interventional device on a 2-D or 3-D CT image of the target object to produce at least one feedback image indicative of ...

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Номер записи: 68

24-03-2016 дата публикации

High Dynamic Range Mammography Using a Restricted Dynamic Range FFDM

Номер: US20160081647A1

Автор: Amin Hamdan, Brodrick James, Bullard Edward, Gunn Spencer

Принадлежит:

Methods of imaging a breast comprising acquiring a sequence of image data sets having differing exposure parameters; and combining the image data sets into a mammography image having greater dynamic range than the dynamic range of any single component image data set. Disclosed methods may further comprise determining an exposure parameter of one or more component image data sets prior to acquiring the sequence of image data sets. The step of determining an exposure parameter of one or more component image data sets may comprise determining exposure duration or an exposure irradiation level. Also disclosed are mammography apparatus and systems to obtain images according to the disclosed methods. 1. A method of imaging a breast comprising:providing an x-ray source;providing a full field digital x-ray detector;acquiring a sequence of sub-images having differing exposure parameters by projecting x-rays from the source to the detector while varying an x-ray beam energy between a first sub-image and a second sub-image of the sequence of sub images; andcombining all of the sub-images of the sequence of sub-images into a two-dimensional composite mammography image having greater dynamic range than the dynamic range of any single sub-image.2. The method of further comprising providing a constant frame integration time between the first sub-image of the sequence of sub-images and the second sub-image of the sequence of sub-images.3. The method of further comprising varying a frame integration time between the first sub-image of the sequence of sub-images and the second sub-image of the sequence of sub-images.4. The method of further comprising limiting the frame integration time of the first sub-image to a frame integration time which is less than a frame integration time determined to cause sensor saturation when the sensor is unobstructed.5. The method of further comprising causing the frame integration time of the second sub-image to be:greater than the frame integration ...

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Номер записи: 69

23-03-2017 дата публикации

Visualizing different types of airway wall abnormalities

Номер: US20170079603A1

Автор: Atilla Kiraly, Benjamin Odry, Carol Novak

Принадлежит: Siemens Healthcare GmbH

A method for visualizing airway wall abnormalities includes acquiring \Dual Energy Computed Tomography (DECT) imaging data comprising one or more image volumes representative of a bronchial tree. An iodine map is derived using the DECT imaging data and the bronchial tree is segmented from the image volume(s). A tree model representative of the bronchial tree is generated. Then, for each branch, this tree model is used to determine an indicator of normal or abnormal thickness. Locations corresponding to bronchial walls in the bronchial tree using the tree model are identified. Next, for each branch, the locations corresponding to bronchial walls in the bronchial tree and the iodine map are used to determine an indicator of normal or abnormal inflammation. A visualization of the bronchial tree may be presented with visual indicators at each of the locations corresponding to bronchial walls indicating whether a bronchial wall is thickened and/or inflamed.

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Номер записи: 70

23-03-2017 дата публикации

SYSTEM AND METHOD FOR DIGITAL BREAST TOMOSYNTHESIS

Номер: US20170079604A1

Автор: Ho Anbinh T.

Принадлежит:

An embodiment method for identifying anomalies in an object includes detecting bulges in a 2D image of the object, detecting 2D convergences in the 2D image of the object, detecting 3D convergences in each of a plurality of tomography slices of the object, and removing convergence overlap from overlapping 2D convergences to generate non-overlapping 2D convergences. For each non-overlapping 2D convergence, the method includes determining whether there is a matching 3D convergence in each slice of the plurality of tomography slices. Then for each matching 3D convergence for each non-overlapping 2D convergence, the method includes determining feature values of features of the matching 3D convergence. The method includes generating mass composite signatures in accordance with the detected bulges, the detected 2D convergences, and the feature values of the matching 3D convergences, and generating marks indicating the anomalies on the 2D image. 1. A method for identifying anomalies in an object , the method comprising:detecting bulges in a two-dimensional (2D) image of the object;detecting 2D convergences in the 2D image of the object;detecting three-dimensional (3D) convergences in each of a plurality of tomography slices of the object;removing convergence overlap from overlapping 2D convergences to generate non-overlapping 2D convergences;for each non-overlapping 2D convergence, determining whether there is a matching 3D convergence in each slice of the plurality of tomography slices;for each matching 3D convergence for each non-overlapping 2D convergence, determining feature values of features of the matching 3D convergence;generating mass composite signatures in accordance with the detected bulges, the detected 2D convergences, and the feature values of the matching 3D convergences; andgenerating marks indicating, the anomalies on the 2D image in accordance with the mass composite signatures.2. The method of claim 1 , wherein generating the mass composite signatures ...

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Номер записи: 71

31-03-2022 дата публикации

METHOD OF USING AN EDENTULOUS SURGICAL GUIDE

Номер: US20220096203A1

Автор: Groscurth Randall C., Groscurth Shoko U.

Принадлежит:

An approach is disclosed that involves creating an updated master dental model of a patient's mouth after an implant surgery by aligning new postoperative oral scan data to pre-existing preoperative oral scan data that is more comprehensive (e.g., it includes bite registration). Before surgery a multi-piece stackable surgical guide set is created using the preoperative oral scan data. The surgical guide set is used to facilitate the surgery. After the surgery at least one piece of the surgical guide set is placed back in a patient's mouth and may act as a reference marker because it was created using the preoperative oral scan data, but is also part of the postoperative mouth configuration since it was used to facilitate the surgery. The affected portion of the mouth may then be digitally scanned directly or indirectly by way of a physical impression with the reference marker in place to determine the new characteristics resulting from the surgery such as new implant installation locations and orientations. The new postoperative oral scan data may be combined with the pre-existing preoperative oral scan data by way of the reference marker (since it is a constant between the two sets of scan data) without having to do such things as take a new bite registration, on which a new implant restoration can be easily created. 1. A method comprising:scanning as a preoperative scan at least one of a tomography of an oral structure of a patient, a topography of the oral structure, a dental impression of the oral structure, and a removable prosthesis of the patient as applied to the oral structure;storing digitally as preoperative scan coordinates in the form of a preoperative dental model the preoperative scan;designing digitally a guide appliance using the preoperative dental model, the guide appliance comprising at least one opening view of a surgical site on the oral structure;storing the design coordinates of the guide appliance as part of the preoperative dental model; ...

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Номер записи: 72

26-03-2015 дата публикации

X-RAY IMAGING APPARATUS AND CONTROL METHOD THEREOF

Номер: US20150085972A1

Автор: CHO Seungryong, CHOI Ji Young, LEE Jong Ha, LEE Yunjeong, Sung Young Hun

Принадлежит:

An X-ray imaging apparatus includes an X-ray generator configured to transmit X-rays to an object, an X-ray detector configured to detect the X-rays transmitted through the object and convert the detected X-rays into electrical signals, a gantry in which the X-ray generator and the X-ray detector are installed so as to be opposite to each other, the gantry being rotatable about a bore, a controller configured to control a rotation of the gantry during bio-signal cycles of the object so that the gantry is rotated from different start positions whenever one of the bio-signal cycles is started, and an image processor configured to generate a 4D image of the object by applying a prior image-based compressed sensing image reconstruction algorithm to plural 2D projection images acquired from the electrical signals generated by converting the X-rays detected during the rotation of the gantry. 1. An X-ray imaging apparatus comprising:an X-ray generator configured to transmit X-rays to an object;an X-ray detector configured to detect the X-rays transmitted through the object and convert the detected X-rays into electrical signals;a gantry in which the X-ray generator and the X-ray detector are installed so as to be opposite to each other, the gantry being rotatable about a bore;a controller configured to control a rotation of the gantry during bio-signal cycles of the object so that the gantry is rotated from different start positions whenever one of the bio-signal cycles is started; andan image processor configured to generate a 4D image of the object by applying a prior image-based compressed sensing image reconstruction algorithm to a plurality of 2D projection images acquired from the electrical signals generated by converting the X-rays detected during the rotation of the gantry.2. The X-ray imaging apparatus according to claim 1 , wherein the controller is configured to rotate the gantry during 2 bio-signal cycles.3. The X-ray imaging apparatus according to claim 2 , ...

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Номер записи: 73

22-03-2018 дата публикации

MEDICAL IMAGE DIAGNOSTIC APPARATUS

Номер: US20180082445A1

Автор: Arakita Kazumasa, Fujisawa Yasuko, HIROHATA Kenji, IGARASHI Takuma, Ishii Hideaki, KAMINAGA Shigeo, Ooga Junichiro, Wakai Satoshi

Принадлежит: Toshiba Medical Systems Corporation

According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images. 1. A medical image processing apparatus comprising: acquire a morphological image including at least a part of a coronary artery and a blood vessel branch of the coronary artery,', 'acquire a Fractional Flow Reserve (FFR) distribution regarding at least the part of the coronary artery, and', 'determining a boundary between a color-display region and a non-color-display region based on a position of the blood vessel branch of the coronary artery,', 'generate a color coded map which represents the FFR distribution by'}, 'displaying, in the color-display region, color representing the FFR distribution, and', 'not displaying, in the non-color-display region, the color representing the FFR distribution., 'processing circuitry configured to'}2. The medical image processing apparatus according to claim 1 , whereinthe non-color-display region is set based on a range from the blood vessel branch position.3. The medical image processing apparatus according to claim 1 , whereinthe processing circuitry acquires data of a plurality of FFR distributions regarding a coronary artery.4. The medical image processing apparatus according to claim 3 , ...

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Номер записи: 74

26-03-2015 дата публикации

EARLY THERAPY RESPONSE ASSESSMENT OF LESIONS

Номер: US20150087957A1

Автор: Kramer Martin, Liu David, Soza Grzegorz, SÜHLING Michael, TIETJEN Christian, WIMMER Andreas, Zhou Shaohua Kevin

Принадлежит:

For therapy response assessment, texture features are input for machine learning a classifier and for using a machine learnt classifier. Rather than or in addition to using formula-based texture features, data driven texture features are derived from training images. Such data driven texture features are independent analysis features, such as features from independent subspace analysis. The texture features may be used to predict the outcome of therapy based on a few number of or even one scan of the patient. 1. A method for therapy response assessment , the method comprising:obtaining a pre-therapy medical image of a patient, the pre-therapy medical image representing at least one lesion of the patient;obtaining a post-therapy medical image of the patient, the post-therapy medical image of the patient representing the at least one lesion of the patient;convolving, by a processor, the pre-therapy and post therapy medical images with a texture feature learned from training images; andclassifying, by the processor, a therapy response of the lesion with a machine-learnt classifier with a result of the convolving as an input feature to the machine-learnt classifier.2. The method of wherein obtaining the pre-therapy and post therapy medical images comprises obtaining computed tomography images.3. The method of wherein obtaining the post-therapy medical image comprises obtaining only the post-therapy medical image or only the post-therapy medical image and one more post therapy medical image claim 1 , and wherein classifying comprises classifying with the input feature including claim 1 , for just features from imaging claim 1 , only features from the pre-therapy and post-therapy medical images.4. The method of wherein convolving comprises convolving with the texture feature comprising an independent sub-space analysis feature.5. The method of wherein convolving comprises convolving with the texture feature and at least two other texture features learned from the training ...

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Номер записи: 75

29-03-2018 дата публикации

METHOD AND APPARATUS FOR CORRECTION OF A SYNTHETIC ELECTRON DENSITY MAP

Номер: US20180085080A1

Автор: HÜNEMOHR Nora, Requardt Martin

Принадлежит:

Systems and methods are provided for determining a synthetic electron density map based on at least one MR image dataset and based on at least one soft tissue image structure and one bone image structure determined in the synthetic electron density map. The soft tissue image structure and the bone image structure may be compared with the corresponding structures in the MR image dataset. From a correction of the first soft tissue image structure and/or of the bone image structure is based on the comparison, a corrected synthetic electron density map is determined. 1. A method for determining a corrected synthetic electron density map , the method comprising:determining, by a processor, a first synthetic electron density map of a patient based on at least one magnetic resonance (MR) image dataset;determining, by the processor, at least one first soft tissue image structure of the patient, at least one first bone image structure of the patient, or at least one first soft tissue image and at least one first bone image structure of the patient based on the first synthetic electron density map;comparing, by the processor, the first soft tissue image structure, the first bone image structure, or the first soft tissue image structure and the first bone image structure from the first synthetic electron density map with corresponding image structures in the MR image dataset; anddetermining, by the processor, a corrected synthetic electron density map, the determining of the corrected synthetic electron density map comprising correcting the first soft tissue image structure, the first bone image structure, or the first soft tissue image structure and the first bone image structure, based on the comparison.2. The method of claim 1 , wherein determining the first synthetic electron density map comprises determining the first synthetic electron density map by an MR CT atlas.3. The method of claim 1 , wherein the comparison is made such that the first soft tissue image structure ...

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Номер записи: 76

31-03-2022 дата публикации

Multimodality image processing techniques for training image data generation and usage thereof for developing mono-modality image inferencing models

Номер: US20220101048A1

Автор: Barbara Darázs, Bipul Das, Dániel Attila Szabó, Gopal B. Avinash, Krishna Seetharam Shriram, Laszlo Rusko, Máté Fejes, Rakesh Mullick, Ravi Soni, Sohan Rashmi Ranjan, Tao Tan, Utkarsh Agrawal, Vikram MELAPUDI, Zita Herczeg

Принадлежит: GE Precision Healthcare LLC

Techniques are described for generating mono-modality training image data from multi-modality image data and using the mono-modality training image data to train and develop mono-modality image inferencing models. A method embodiment comprises generating, by a system comprising a processor, a synthetic 2D image from a 3D image of a first capture modality, wherein the synthetic 2D image corresponds to a 2D version of the 3D image in a second capture modality, and wherein the 3D image and the synthetic 2D image depict a same anatomical region of a same patient. The method further comprises transferring, by the system, ground truth data for the 3D image to the synthetic 2D image. In some embodiments, the method further comprises employing the synthetic 2D image to facilitate transfer of the ground truth data to a native 2D image captured of the same anatomical region of the same patient using the second capture modality.

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Номер записи: 77

31-03-2016 дата публикации

Radiation imaging system, image processing device, radiation imaging method, and image processing program

Номер: US20160089090A1

Автор: Hiroki Nakayama

Принадлежит: Fujifilm Corp

Disclosed are a radiation imaging system, an image processing device, a radiation imaging method, and a non-transitory computer-readable recording medium having an image processing program recorded thereon which facilitate the confirmation of a positional relationship between an object of interest and a biopsy needle. In the system using a radiation imaging device as a mammography device, when performing a biopsy of a breast of a subject, the positional relationship is confirmed using a radiation image (projection image) obtained through tomosynthesis imaging. A control unit reconstructs the projection image to generate a tomographic image in a state where the needle is inserted into the breast and generates a reprojection image at a predetermined angle from the tomographic image. The control unit extracts an image of the needle from the projection image, synthesizes the extracted image of the needle into the projection image while aligning, and displays the projection image.

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Номер записи: 78

31-03-2022 дата публикации

METHOD FOR GENERATING RESULT SLICE IMAGES WITH AT LEAST PARTIALLY DIFFERENT SLICE THICKNESS

Номер: US20220101573A1

Автор: BEISTER Marcel, Hoernig Mathias, Kappler Steffen, RITSCHL Ludwig

Принадлежит: Siemens Healthcare GmbH

A method for generating result slice images with at least partially different slice thickness based on a tomosynthesis image data set of a breast includes generating average value slices and maximum value slices (MIP) based on the tomosynthesis image data set, frequency dividing the average value slices into low-pass filtered and high-pass filtered average value slices, high-pass filtering of maximum value slices to form high-pass filtered maximum value slices, mixing high-pass filtered maximum value slices and high-pass filtered average value slices to form mixed high-pass filtered maximum value slices, combining the low-pass filtered average value slices with the mixed high-pass filtered maximum value slices to form the result slice images, and applying a moving maximum value across a selected thickness of maximum value slices or across a selected thickness of mixed high-pass filtered maximum value slices. 1. A method for generating result slice images with at least partially different slice thickness based on a tomosynthesis image data set of a breast , the method comprising:generating average value slices and maximum value slices based on the tomosynthesis image data set;frequency dividing the average value slices into low-pass filtered and high-pass filtered average value slices;high-pass filtering of first maximum value slices to form high-pass filtered maximum value slices, the first maximum value slices being based on the maximum value slices;mixing the high-pass filtered maximum value slices and the high-pass filtered average value slices to form mixed high-pass filtered maximum value slices;combining the low-pass filtered average value slices with first mixed high-pass filtered maximum value slices to form the result slice images, the first mixed high-pass filtered maximum value slices being based on the mixed high-pass filtered maximum value slices; andapplying a moving maximum value across a selected thickness of the maximum value slices to generate the ...

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Номер записи: 79

12-03-2020 дата публикации

ANALYSIS OF SKELETAL TRAUMA USING DEEP LEARNING

Номер: US20200082530A1

Автор: Chabin Guillaume, Grbic Sasa, Shah Amitkumar Bhupendrakumar, Xu Zhoubing

Принадлежит:

Systems and methods for determining whether a bone of a patient is injured are provided. A medical image of a bone of a patient is received. A synthesized bone image is generated over the bone in the medical image to provide a reconstructed image. The synthesized bone image represents uninjured bone. The medical image is compared with the reconstructed image to evaluate an injury to the bone of the patient. 1. A method for determining whether a bone of a patient is injured , comprising:receiving a medical image of a bone of a patient;generating a synthesized bone image over the bone in the medical image to provide a reconstructed image, the synthesized bone image representing uninjured bone; andcomparing the medical image with the reconstructed image to evaluate an injury to the bone of the patient.2. The method of claim 1 , wherein generating a synthesized bone image over the bone in the medical image to provide a reconstructed image claim 1 , the synthesized bone image representing uninjured bone comprises:generating the synthesized bone image using a generative adversarial network.3. The method of claim 1 , wherein generating a synthesized bone image over the bone in the medical image to provide a reconstructed image claim 1 , the synthesized bone image representing uninjured bone comprises:generating a skeletal segmentation model from the medical image; defining a mask over the bone in the medical image for the respective region of interest, and', 'generating a synthesized bone image portion over the mask in the medical image for the respective region of interest; and, 'for each respective region of interest in a plurality of regions of interest in the skeletal segmentation modelcombining the synthesized bone image portions for the plurality of regions of interest to form the synthesized bone image.4. The method of claim 1 , wherein comparing the medical image with the reconstructed image to evaluate an injury to the bone of the patient comprises:determining a ...

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Номер записи: 80

30-03-2017 дата публикации

Control of the movement and image acquisition of an x-ray system for a 3D/4D co-registered rendering of a target anatomy

Номер: US20170086759A1

Автор: Eichler Uzi, Herscovici Adrian

Принадлежит:

A method and system for producing a model of an anatomical target area includes determining a position and/or an orientation of a medical device according to an output of a medical device sensor, and controlling an imager based on the position and/or orientation of the medical device. 1. A system for producing a model of an anatomical target area , the system comprising:a medical positioning system comprising a medical device sensor; anda processor comprising circuitry configured to electrically communicate with the medical positioning system and with an imager configured to generate an image of the anatomical target area, the processor configured to: i) determine position data from the medical positioning system, the position data comprising a position and/or an orientation of a medical device according to an output of the medical device sensor, and ii) control the imager based on the position data.2. The system of claim 1 , further comprising a memory comprising circuitry to electrically communicate with the processor claim 1 , the medical positioning system claim 1 , and the imager claim 1 , the memory configured to store a look-up table correlating the position data with control instructions for the imager.3. The system of claim 1 , wherein the medical positioning system is configured to determine medical positioning system coordinates of the medical device sensor within a first coordinate system; wherein the imager is configured to determine imaging coordinates of the medical device sensor within a second coordinate system; and wherein the processor is configured to co-register the first and second coordinate systems.4. The system of claim 1 , wherein the processor is further configured to create a three-dimensional model using at least two images generated by the imager.5. The system of claim 1 , wherein the processor is further configured to control an angle or an orientation of the imager or a portion of the imager.6. The system of claim 5 , wherein the ...

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Номер записи: 81

25-03-2021 дата публикации

Medical Imaging Device and Image Processing Method

Номер: US20210089812A1

Автор: Takashi Toyomura, Toshinori Maeda, Yun Li, Zisheng LI

Принадлежит: HITACHI LTD

Provided is a technique for automatically extracting a cross section with a high degree of precision and at high speed, with avoiding problems of operator dependence and imaging target dependence, from 3D volume data or temporally sequential 2D or 3D images or 3D volume data, acquired by a medical imaging device, when determining the cross section used for diagnosis and measurement. An image processor of an imaging device is provided with a cross section extractor for extracting a specified cross section from imaged data. The cross section extractor determines the specified cross section by using a learning model trained in advance to output discrimination scores for a plurality of cross sectional image data, the discrimination score representing spatial or temporal proximity to the specified cross section. The learning model is a downsized model obtained by integrating a highly trained model having a large number of layers, with an untrained model having less number of layers, followed by retraining.

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Номер записи: 82

19-03-2020 дата публикации

METHOD FOR SUPPORTING A USER, COMPUTER PROGRAM PRODUCT, DATA MEDIUM AND IMAGING SYSTEM

Номер: US20200085281A1

Автор: Regensburger Alois

Принадлежит:

A method for supporting a user, a corresponding computer program product, a corresponding data medium, and a corresponding imaging system are provided. According to the method, a three-dimensional (3D) data set depicting a target object is provided, and at least one two-dimensional (2D) image of the target object is automatically acquired. The 2D image and the 3D data set are automatically registered with each other by a 2D/3D registration. A spatial direction in which the 2D/3D registration exhibits greatest uncertainty is automatically specified. A signal for aligning an instrument that is provided for the purpose of examining the target object is then automatically generated and output as a function of the specified spatial direction in order to support the user. 1. A method for supporting a user , the method comprising:providing a three-dimensional (3D) data set that depicts a target object;acquiring at least one two-dimensional (2D) image of the target object;automatically 2D/3D registering the at least one 2D image with the provided 3D data set;automatically specifying a spatial direction in which the 2D/3D registration exhibits greatest uncertainty; andautomatically generating, as a function of the specified spatial direction, and outputting a signal for supporting an alignment of an instrument that is provided for examining the target object, such that the user is supported.2. The method of claim 1 , wherein an endoscope is used as the instrument claim 1 , and automatically tracking a pose of the endoscope in a coordinate system of the 2D image;', 'generating at least one overlay image from at least one endoscope image of the target object, as recorded by the endoscope, and the 3D data set; and', 'outputting an indication to the user as the signal, the indication indicating how the user may change the alignment of the endoscope, such that an acquisition direction of the endoscope extends along the specified spatial direction, such that a visualization error, ...

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Номер записи: 83

19-03-2020 дата публикации

Virtual positioning image for use in imaging

Номер: US20200085385A1

Автор: Gireesha Chinthamani Rao, John Eric Tkaczyk, Katelyn Rose Nye, Manu Ramesh, Nasir Ahmed Desai, Srikrishnan Viswanathan

Принадлежит: General Electric Co

The present approach relates to the use of augmented or enhanced reality to facilitate positioning of one or more of a patient, X-ray source, or detector during an image acquisition. In certain implementations, sensors and/or cameras provide quantitative information about the position of system components and the patient, which may be used to generate a positioning signal (positioning image audio or textual positioning instructions) based upon reference to a prior patient image.

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Номер записи: 84

21-03-2019 дата публикации

MEDICAL IMAGE RECONSTRUCTION DEVICE AND METHOD EMPHASISING DEPTH INFORMATION

Номер: US20190087987A1

Автор: BAE Woong, Choi Sung Il

Принадлежит:

A medical image processing device is disclosed. The disclosed medical image processing device may include: an input interface through which a depth adjusting command is input from a user; an image processor and controller generating a two-dimensional reconstruction image by overlapping a part or all of CT image data in a view direction, and changing a contrast of at least a part of the two-dimensional reconstruction image according to the depth adjusting command; and a display part displaying the two-dimensional reconstruction image. 1. A device for processing a medical image , the device comprising:an input interface configured to input a depth adjusting command from a user;an image processing and control unit configured to generate a two-dimensional reconstruction image by overlapping a part or all of CT image data in a view direction, and change a contrast of at least a part of the two-dimensional reconstruction image according to the depth adjusting command; anda display unit displaying the two-dimensional reconstruction image.2. The device of claim 1 , wherein the two-dimensional reconstruction image is a cephalometric image or panoramic image.3. The device of claim 1 , wherein the image processing and control unit sets a plurality of sections in the CT image data along the view direction claim 1 , generates a weight map for each of the plurality of sections claim 1 , and changes a contrast of at least a part of the two-dimensional reconstruction image based on a weight map of a selected section according to the depth adjusting command.4. A method of processing a medical image claim 1 , the method comprising:step (a) of generating a two-dimensional reconstruction image by overlapping a part or all of CT image data in a view direction; andstep (b) of changing a contrast of at least a part of the two-dimensional reconstruction image according to a depth adjusting command input from a user, and displaying the changed two-dimensional reconstruction image.5. The ...

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Номер записи: 85

05-04-2018 дата публикации

MEDICAL INFORMATION PROCESSING APPARATUS, X-RAY CT APPARATUS, AND MEDICAL INFORMATION PROCESSING METHOD

Номер: US20180092615A1

Автор: Arakita Kazumasa, NISHIOKA Takahiko, Sakaguchi Takuya

Принадлежит: Toshiba Medical Systems Corporation

A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains image data rendering a blood vessel of patient. The processing circuitry performs a fluid analysis on the obtained image data and calculates an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel. With respect to the index values to be calculated, the processing circuitry selects a position in which a first value is to be obtained from among the plurality of positions or selects a value serving as the first value from among the index values exhibited in positions. The processing circuitry causes a display to display the first value in a predetermined display region thereof used for displaying the first value. 1. A medical information processing apparatus comprising processing circuitry configured to:obtain image data rendering a blood vessel of a patient;perform a fluid analysis on the obtained image data and calculate an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel;select, with respect to the index values to be calculated, a position in which a first value is to be obtained from among the plurality of positions or to select a value serving as the first value from among the index values exhibited in positions; andcause a display to display the first value in a predetermined display region thereof used for displaying the first value.2. The medical information processing apparatus according to claim 1 , wherein the index value is a fractional flow reserve value calculated with respected to the blood vessel by performing the fluid analysis.3. The medical information processing apparatus according to claim 1 , wherein the processing circuitry is configured to analyze a shape of the blood vessel of the patient and set the position in the blood vessel from which the first value is to be ...

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Номер записи: 86

06-04-2017 дата публикации

SYSTEMS AND METHODS FOR ESTIMATING IRRADIATION DOSE FOR PATIENT APPLICATION BASED ON A RADIATION FIELD MODEL AND A PATIENT ANATOMY MODEL

Номер: US20170095223A1

Автор: Samei Ehsan, Segars Paul, Tian Xiaoyu

Принадлежит:

Systems and methods for estimating irradiation dose for patient application based on a radiation field model and a patient anatomy model are disclosed. According to an aspect, a method includes providing a database of patient anatomy models. The method also includes providing a radiation field model of an X-ray system. Further, the method includes receiving a measure of an anatomy of a patient. The method also includes determining a patient anatomy model among the patient anatomy models that matches or is similar to the anatomy of the patient based on the measure of the patient and a corresponding measure of each of the patient anatomy models. The method also includes estimating an irradiation dose for application to the patient by the X-ray system based on the radiation field model and the determined patient anatomy model. 1. A method comprising:providing a database of patient anatomy models;providing a radiation field model of an X-ray system;receiving a measure of an anatomy of a patient;determining a patient anatomy model among the patient anatomy models that matches or is similar to the anatomy of the patient based on the measure of the patient and a corresponding measure of each of the patient anatomy models; andestimating an irradiation dose for application to the patient by the X-ray system based on the radiation field model and the determined patient anatomy model.2. The method of claim 1 , wherein the database of patient anatomy models includes patient anatomy models of differing ages claim 1 , sizes claim 1 , and genders.3. The method of claim 1 , further comprising:receiving image data of a plurality of patients;identifying internal structures of the patients based on the image data; andgenerating the patient anatomy models based on the identified internal structures.4. The method of claim 3 , wherein the image is a computed tomography (CT) image.5. The method of claim 3 , wherein identifying internal structures comprises segmenting bones and organs ...

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Номер записи: 87

14-04-2016 дата публикации

PERIODONTAL DISEASE TESTING APPARATUS AND IMAGE PROCESSING PROGRAM USED THEREIN

Номер: US20160100811A1

Автор: HAYASHI Tatsuro, Tsuji Hironobu, Tsuji Yosuke

Принадлежит: Media Co., Ltd.

A periodontal disease testing apparatus of the present invention includes: an X-ray CT scanner photographing a portion including a tooth, a gingiva, and alveolar bone within an oral cavity to generate volume data of the portion; region setting means setting a related region of a subject tooth based on the volume data; defining means defining a principal axis of the subject tooth; correcting means correcting the related region so as to align the principal axis of the subject tooth with a normal direction of a cross-section of an X-ray CT image; multi-planar reconstruction image generating means generating a multi-planar reconstruction image of the corrected related region; means for generating developed image and the like transforming a coordinate of the related region to generate a developed image and a rotated image; and navigating means indicating correspondences of a spatial coordinate among the multi-planar reconstruction image, the developed image, and the rotated image. 1. A periodontal disease testing apparatus comprising:an X-ray CT scanner photographing a portion including a tooth, a gingiva, and alveolar bone within an oral cavity to generate volume data of the portion;region setting means setting a related region of a subject tooth based on the volume data;defining means defining a principal axis of the subject tooth;correcting means correcting the related region so as to align the principal axis of the subject tooth with a normal direction of a cross-section of an X-ray CT image;multi-planar reconstruction image generating means generating a multi-planar reconstruction image of the corrected related region;means for generating developed image and the like transforming a coordinate of the related region to generate a developed image and a rotated image; andnavigating means indicating correspondences of a spatial coordinate among the multi-planar reconstruction image, the developed image, and the rotated image.2. The periodontal disease testing apparatus ...

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Номер записи: 88

26-03-2020 дата публикации

Ultrasound Three-Dimensional (3-D) Segmentation

Номер: US20200093464A1

Автор: Hansen Jens Munk, Martins Bo

Принадлежит: B-K MEDICAL APS

An ultrasound imaging system includes a beamformer configured to generate 2-D images offset from each other based on sweeping motion of a transducer array during a 3-D ultrasound imaging procedure producing volumetric data. The ultrasound imaging system further includes a 2-D mask processor configured to generate a 2-D mask image for each of the 2-D images. Each of the 2-D mask images includes a contour of a predetermined structure of interest in the volumetric data. The ultrasound imaging system further includes a 3-D mask processor configured to segment the structure from the 3-D image with the 2-D mask images, generating a 3-D segmentation. 1. An ultrasound imaging system , comprising:a beamformer configured to generate 2-D images offset from each other based on sweeping motion of a transducer array during a 3-D ultrasound imaging procedure producing volumetric data;a 2-D mask processor configured to generate a 2-D mask image for each of the 2-D images, wherein each of the 2-D mask images includes a contour of a predetermined structure of interest in the volumetric data; anda 3-D mask processor configured to segment the structure from the volumetric data with the 2-D mask images, generating a 3-D segmentation.2. The ultrasound imaging system of claim 1 , further comprising:a display configured to display a 2-D image with a corresponding 2-D mask overlaid thereover.3. The ultrasound imaging system of claim 1 , where the 3-D mask processor is further configured to compute a volume measurement of the structure from the 3-D segmentation.4. The ultrasound imaging system of claim 1 , further comprising:a 3-D image processor configured to construct a 3-D image from the 2-D images; anda 2-D re-slice processor configured to generate a set of re-sliced 2-D images that follow an anatomical axis of interest from the 3-D image,wherein the 2-D mask processor is configured to generate a 2-D mask image for each re-sliced 2-D image.5. The ultrasound imaging system of claim 4 , ...

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Номер записи: 89

26-03-2020 дата публикации

System and Method for Reconstructing Image Volumes from Sparse Two-Dimensional Projection Data

Номер: US20200094074A1

Автор: Chen Guang-Hong, Grist Thomas M., Montoya Juan Camilo

Принадлежит: WISCONSIN ALUMNI RESEARCH FOUNDATION

A system and method for acquiring medical images of a subject includes performing two-dimensional (2D) scan of a subject using a medical imaging system to acquire 2D data from at least two view angles and generating a three-dimensional (3D) model of the subject from the 2D data. The method also includes extracting desired images of the subject from the 3D model. The desired images are at view angles different from the at least two view angles. The method further includes prescribing an imaging study of the subject using the desired images of the subject to control at least one of a signal-to-noise ratio of data acquired using the imaging study or a dose of ionizing radiation delivered to the subject during the imaging study. The method also includes performing the imaging study using the medical imaging system to acquire imaging data from the subject and reconstructing images of the subject from the imaging data. 1. A method for acquiring medical images of a subject comprising:performing two-dimensional (2D) scout scan of a subject using a medical imaging system to acquire 2D data from at least two view angles;generating a three-dimensional (3D) model of the subject from the 2D data;extracting desired images of the subject from the 3D model, wherein the desired images are at view angles different from the at least two view angles;prescribing an imaging study of the subject using the desired images of the subject to control at least one of a signal-to-noise ratio of data acquired using the imaging study or a dose of ionizing radiation delivered to the subject during the imaging study;performing the imaging study using the medical imaging system to acquire imaging data from the subject; andreconstructing images of the subject from the imaging data.2. The method of wherein the medical imaging system is a computed tomography (CT) imaging system.3. The method of wherein generating the 3D model of the subject form the 2D data includes providing the 2D data to a ...

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Номер записи: 90

26-03-2020 дата публикации

IMAGE-GUIDED RADIATION TREATMENT WITH IMAGING DATA USING IMAGING RADIATION AT DIFFERENT ENERGY LEVELS

Номер: US20200094075A1

Автор: Chopra Prashant, Janko Christopher A., Jordan Petr, Maurer Calvin R., Myronenko Andriy, Purwar Anuj K., West Jay B.

Принадлежит:

A method of image-guided radiation treatment is described. The method may include acquiring digitally reconstructed radiographs (DRRs) of a patient and generating a first set of image data of part or all of the patient using imaging radiation at a first energy level and a second set of image data of part or all of the patient using imaging radiation at a second energy level. The method may also include processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, and wherein part or all of the image data comprises the target. The method may also include registering the enhanced image with the DRRs to obtain a registration result, tracking movement and position of the target using the registration result to generating tracking information. 1. A method of image-guided radiation , the method comprising:acquiring digitally reconstructed radiographs (DRRs) of a target of a patient;generating a first set of image data of part or all of the target using imaging radiation at a first energy level and a second set of image data of part or all of the target using imaging radiation at a second energy level;processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, wherein part or all of the image data comprises the target;registering the enhanced image with the DRRs to obtain a registration result;tracking the target using the registration result to generating tracking information; anddirecting treatment delivery to the target based on the tracking information obtained from the enhanced image.2. The method of claim 1 , wherein the tracking information obtained from the enhanced image comprises a position of the target.3. The method of claim 1 , wherein directing treatment delivery comprises:generating a treatment delivery beam using a treatment ...

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Номер записи: 91

04-04-2019 дата публикации

SYSTEMS AND METHODS FOR IMAGE CORRECTION IN AN X-RAY DEVICE

Номер: US20190099151A1

Автор: Desai Nasir Ahmed, Pennujuru Sai Kumar, Rajasekaran Prabhu, Yardi Vinayak

Принадлежит:

A method for image correction in a mobile X-ray device includes obtaining an X-ray image corresponding to a region of interest, where the X-ray image includes a projection of the region of interest by an X-ray beam on a detector plane. The method further includes receiving a tilt parameter corresponding to the detector plane. Moreover, the method includes generating a corrected X-ray image based on the X-ray image and the tilt parameter using a perspective projection technique, where the corrected X-ray image corresponds to a projection of the region of interest on a corrected detector plane. 1. A method for image correction in a mobile X-ray device , the method comprising:obtaining an X-ray image corresponding to a region of interest, wherein the X-ray image comprises a projection of the region of interest by an X-ray beam on a detector plane;receiving a tilt parameter corresponding to the detector plane; andgenerating a corrected X-ray image based on the X-ray image and the tilt parameter using a perspective projection technique, wherein the corrected X-ray image corresponds to a projection of the region of interest on a corrected detector plane.2. The method of claim 1 , further comprising identifying a medical condition of the region of interest based on the corrected X-ray image.3. The method of claim 1 , further comprising receiving one or more imaging parameters claim 1 , wherein the one or more imaging parameters comprise a first field of view angle claim 1 , a second field of view angle claim 1 , a position of an X-ray source in the mobile X-ray device claim 1 , a position of an X-ray detector in the mobile X-ray device claim 1 , or combinations thereof.4. The method of claim 3 , further comprising visualizing one or more of the X-ray image claim 3 , the corrected X-ray image claim 3 , the one or more imaging parameters claim 3 , the detector plane claim 3 , the corrected detector plane claim 3 , and the tilt parameter in real-time on a display device.5. ...

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Номер записи: 92

19-04-2018 дата публикации

SYSTEMS AND METHODS FOR DETERMINING ORIENTATION OF AN IMPLANTED LEAD

Номер: US20180104482A1

Автор: Bokil Hemant

Принадлежит:

A method and system for identifying a rotational orientation of an implanted electrical stimulation lead utilize radiological images of the lead. The lead has an asymmetric marker with a longitudinal band extending around a portion of the circumference of the lead. The method and system includes obtaining radiological images of the lead and using those images to determine a predicted rotational orientation of the lead. The predicted rotational orientation of the lead is then corrected based on at least one parameter of the imaging technique used to generate the image data. 1. A method for identifying a rotational orientation of an implanted electrical stimulation lead , the method comprising:obtaining a plurality of radiological images of the lead generated using an imaging technique, the lead comprising a lead body, a plurality of segmented electrodes disposed along a distal portion of the lead body, and an asymmetric marker disposed along the distal portion of the lead body and comprising a longitudinal band that extends around a portion of a circumference of the lead body and defines a marker window extending around a remainder of the circumference of the lead body and opposite the longitudinal band, wherein the asymmetric marker and lead body are distinguishable from each other in the radiological images, wherein each segmented electrode extends around no more than 50% of a circumference of the lead body;generating an isosurface image from the plurality of radiological images and displaying the isosurface image on a display device, wherein the isosurface image comprises an image of the longitudinal band of the marker;identifying a bulge in the isosurface image corresponding the longitudinal band of the marker;determining a predicted rotational orientation of the lead based on the bulge in the isosurface image; anddetermining a rotational orientation of the lead by correcting the predicted rotational orientation of the lead based on at least one parameter of the ...

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Номер записи: 93

29-04-2021 дата публикации

Method For Visualizing A Bone

Номер: US20210121147A1

Автор: Blau Arno, Simon Bernd

Принадлежит:

A method and a corresponding system are provided. The method comprises steps of providing 2D images and subsequently detecting outlines of a primary structure in each of the images. A visual representation of the 2D images is generated and the 2D images are then arranged as 2D slices in a 3D visual representation. To this end, at least two of the 2D images are taken at different imaging angles. The method provides a 3D visual representation of a region of interest comprising a primary structure to support a spatial sense of a user. 1. A method for visualizing a bone , comprising:providing a plurality of 2D images of the bone, wherein at least two of the 2D images are taken at different imaging orientations with respect to the bone,detecting outlines of a primary structure in the 2D images of the bone,generating visual representations of the 2D images based on the outlines, anddisplaying the visual representations of the 2D images simultaneously on respective 2D planes in a 3D visual representation, wherein at least two of the 2D planes are oriented in the 3D visual representation so as to intersect at an intersection angle, the at least two of the 2D planes corresponding to the at least two of the 2D images taken at different imaging orientations, and the intersection angle corresponding to an angle defined between the respective imaging orientations of the at least two 2D images.2. The method according to claim 1 , wherein the primary structure is at least one of a bone and a bone fragment.3. The method according to claim 1 , wherein the primary structure is at least one of an implant and a reference body.4. The method according to claim 1 , further comprising the steps of:detecting at least three markers in the 2D images, wherein a marker is one of a reference body, a part of a reference body, an implant or a bone shape, anddetermining a spatial arrangement of the primary structure based on the position of the at least three markers, wherein the step of arranging ...

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Номер записи: 94

21-04-2016 дата публикации

Method and system for image processing to determine patient-specific blood flow characteristics

Номер: US20160110866A1

Автор: Charles A. Taylor

Принадлежит: HeartFlow Inc

Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model.

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Номер записи: 95

11-04-2019 дата публикации

AUTOMATED SEGMENTATION OF THREE DIMENSIONAL BONY STRUCTURE IMAGES

Номер: US20190105009A1

Автор: Kraft Marek, Luciano Cristian J., Siemionow Kris B.

Принадлежит:

A computer-implemented system: at least one processor communicably coupled to at least one nontransitory processor-readable storage medium storing processor-executable instructions or data receives segmentation learning data comprising a plurality of batches of labeled anatomical image sets, each image set comprising image data representative of a series of slices of a three-dimensional bony structure, and each image set including at least one label which identifies the region of a particular part of the bony structure depicted in each image of the image set, wherein the label indicates one of a plurality of classes indicating parts of the bone anatomy; trains a segmentation CNN, that is a fully convolutional neural network model with layer skip connections, to segment semantically at least one part of the bony structure utilizing the received segmentation learning data; and stores the trained segmentation CNN in at least one nontransitory processor-readable storage medium of the machine learning system. 1. A computer-implemented machine learning system , comprising:at least one nontransitory processor-readable storage medium that stores at least one of processor-executable instructions or data; and receives segmentation learning data comprising a plurality of batches of labeled anatomical image sets, each image set comprising image data representative of a series of slices of a three-dimensional bony structure, and each image set including at least one label which identifies the region of a particular part of the bony structure depicted in each image of the image set, wherein the label indicates one of a plurality of classes indicating parts of the bone anatomy;', 'trains a segmentation CNN, that is a fully convolutional neural network model with layer skip connections, to segment semantically at least one part of the bony structure utilizing the received segmentation learning data; and', 'stores the trained segmentation CNN in at least one nontransitory processor- ...

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Номер записи: 96

28-04-2016 дата публикации

RADIOGRAPHIC APPARATUS AND METHOD OF USING THE SAME

Номер: US20160113601A1

Автор: Notohara Daisuke, SAKAGUCHI Junpei

Принадлежит:

A radiographic apparatus and method of obtaining images using a radiographic apparatus are disclosed. The radiographic apparatus and method use a filter having different regions for different radiation states. The filter is configured to be moved during different irradiating radiation steps. The radiation from the different steps is detected and may be used to generate an image. 1. A radiographic apparatus comprising:a radiation source that irradiates radiation toward a subject;radiation source control means for controlling a voltage of the radiation source;radiation source moving means for moving the radiation source with respect to the subject;radiation source movement control means for controlling the radiation source moving means;a filter having a high voltage region through which the radiation irradiated when the radiation source is in a high voltage state passes and a low voltage region through which the radiation irradiated when the radiation source is in a low voltage state passes;a holder that moves in accordance with a movement of the radiation source and holds the filter;holder rotation means for rotating the holder;holder rotation control means for controlling the holder rotation means;radiation detection means for detecting the radiation passed through the filter and the subject; andimage generation means for generating an image based on an output of the radiation detection means.2. The radiographic apparatus as recited in claim 1 , wherein the holder rotation means is configured to switch whether or not radiation irradiated from the radiation source passes through the filter claim 1 , move the high voltage region of the filter to a position where the radiation passes through when the radiation source is in the high voltage state and move the low voltage region of the filter to a position where the radiation passes through when the radiation source is in the low voltage state.3. The radiographic apparatus as recited in claim 1 , wherein the holder ...

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Номер записи: 97

30-04-2015 дата публикации

APPARATUS AND METHOD FOR RECONSTRUCTING PANORAMIC X-RAY IMAGE

Номер: US20150117743A1

Автор: Choi Sung Il

Принадлежит:

The present invention provides an apparatus and method for reconstructing a panoramic X-ray image. The apparatus includes a storage unit for storing image data of multiple image layers; an image processing unit for determining a reference image layer among the multiple image layers, finding blocks that correspond to at least one block designated in the reference image layer from other image layers, selecting a clearest block by comparing image data of the corresponding blocks, and reconstructing the reference image layer by replacing the designated block in the reference image layer with the clearest block selected in any of the other image layers, if the selected block is not the same as the designated block in the reference image layer; and a display unit for displaying a panoramic image of the reconstructed reference image layer. 1. An apparatus for reconstructing a panoramic X-ray image , the apparatus comprising:a storage unit for storing image data of multiple image layers;an image processing unit for determining a reference image layer among the multiple image layers, finding blocks that correspond to at least one block designated in the reference image layer from other image layers, selecting a clearest block by comparing image data of the corresponding blocks, and reconstructing the reference image layer by replacing the designated block in the reference image layer with the clearest block selected in any of the other image layers, if the selected block is not the same as the designated block in the reference image layer; anda display unit for displaying a panoramic image of the reconstructed reference image layer.2. The apparatus of claim 1 , wherein the reference image layer is selected from among the multiple image layers.3. The apparatus of claim 1 , wherein the reference image layer is obtained by dividing the multiple image layers into multiple regions claim 1 , selecting the clearest image layer for each region claim 1 , and combining selected image ...

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Номер записи: 98

10-07-2014 дата публикации

Cutting simulation device and cutting simulation program

Номер: US20140193789A1

Автор: Keiho Imanishi, Ryoichi Imanaka, Tomoaki Takemura, Tsuyoshi KOHYAMA

Принадлежит: Panasonic Corp, Panasonic Healthcare Co Ltd

A PC ( 1 ) comprises a tomographic image information acquisition section ( 6 ), a memory ( 9 ), a volume rendering calculator ( 13 ), a display unit ( 2 ), a mouse ( 4 ), and a voxel label setting section ( 18 ). The tomographic image information acquisition section ( 6 ) acquires tomographic image information. The memory ( 9 ) stores voxel information about the tomographic image information. The volume rendering calculator ( 13 ) samples voxel information in a direction perpendicular to the line of sight, on the basis of the voxel information. The display unit ( 2 ) displays calculation results from the volume rendering calculator ( 13 ). The mouse ( 4 ) inputs cutting instructions for a liver ( 22 ) displayed on the display unit ( 2 ). The voxel label setting section ( 18 ) displays the status of the liver ( 22 ) after cutting using the cutting instructions from the mouse ( 4 ), and displays blood vessels ( 23 ) inside the liver ( 22 ) included in a cut portion (C), in a pre-cut state even after cutting.

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Номер записи: 99

11-04-2019 дата публикации

ADVANCED COMPUTER-AIDED DIAGNOSIS OF LUNG NODULES

Номер: US20190108632A1

Автор: Agnihotri Lalitha, Borczuk Alain C., Boroczky Lilla, Kawut Steven, Lee Michael Chun-chieh, Powell Charles Andrew, Zhao Luyin

Принадлежит:

Methods are herein provided for decision support in diagnosis of a disease in a subject, and for extracting features from a multi-slice data set. Systems for computer-aided diagnosis are provided. The systems take as input a plurality of medical data and produces as output a diagnosis based upon this data. The inputs may consist of a combination of image data and clinical data. Diagnosis is performed through feature selection and the use of one or more classifier algorithms. 1. A method of extracting features from a multi-slice data set , the method comprising:representing a spatial distribution of an object mathematically;representing a shape of the object mathematically;determining contour and texture of the object;identifying a border pixel of a lesion and estimating a derivative;analyzing the derivative as a function of position along the contour;identifying automatically the presence of dark regions or bright regions within the object; andapproximating texture of an image in a surrounding region of the object.2. The method according to claim 1 , further comprising selecting an individual slice from the multi-slice data set for analysis by a manual selection by a user or by an automatic selection of a largest slice.3. The method according to claim 1 , wherein the features are calculated for the group consisting of: each slice of the multi-slice data set; a maximum intensity projection taken at an arbitrary angle; a minimum intensity projection taken at an arbitrary angle; and a digitally reconstructed radiograph taken at an arbitrary angle through one or more slices of the image.4. The method according to claim 3 , wherein the features calculated for each slice of the multi-slice data set are combined by a method selected from the group consisting of: calculating a weighted average in which weights are proportional to a number of pixels on each slice; finding a maximum value across multiple slices of the multi-slice data set; and finding a minimum value across ...

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Номер записи: 100