26-09-2019 дата публикации
Номер: US20190295268A1
In accordance with at least some embodiments of the present disclosure, a process to improve computed tomography (CT) to cone beam computed tomography (CBCT) registration is disclosed. The process may include receiving a CT image generated by CT-scanning of an object, and receiving a CBCT image generated by CBCT-scanning of the object. The process may include generating an image mask based on Digital Imaging and Communications in Medicine (DICOM) information extracted from the CBCT image. For a specific pixel in the CBCT image, the image mask contains a corresponding data-field indicating whether the specific pixel contains image data generated based on the CBCT-scanning of the object. The process may further include generating a registered image by utilizing the image mask to perform a DIR between the CT image and the CBCT image. 1. A method to improve computed tomography (CT) to cone beam computed tomography (CBCT) registration , comprising:receiving, by a deformable image registration (DIR) system, a CT image generated by CT-scanning of an object;receiving, by the DIR system, a CBCT image generated by CBCT-scanning of the object;generating, by the DIR system, an image mask based on Digital Imaging and Communications in Medicine (DICOM) information extracted from the CBCT image, wherein for a specific pixel in the CBCT image, the image mask contains a corresponding data-field indicating whether the specific pixel contains image data generated based on the CBCT-scanning of the object; andgenerating, by the DIR system, a registered image by utilizing the image mask to perform a DIR between the CT image and the CBCT image.2. The method as recited in claim 1 , further comprising:performing an automatic dose estimation or a contour propagation on the object based on the registered image.3. The method as recited in claim 1 , wherein the DICOM information further comprises DICOM Target Center and DICOM Reconstruction Diameter.4. The method as recited in claim 3 , wherein ...
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