20-03-2014 дата публикации
Номер: US20140081131A1
Принадлежит:
A method is provided for angiographic examination of an organ, vascular system or other body regions as the examination object of a patient by means of 4D rotational angiography. A step S1 of the method involves acquisition of projection images in different cardiac phases. A further step S2 involves reconstruction of 3D volume images in the different cardiac phases. A further step S3 involves calculation of a motion map. A further step S4 includes image combination of the 3D volume images with the motion map to produce resulting, corrected 3D volume images in the different cardiac phases. A further step S5 involves presentation of the resulting, corrected 3D volume images. 1. An angiographic examination method for an organ , vascular system or other body regions as the examination object of a patient by means of 4D rotational angiography , the method comprising the steps of:{'sub': 0', 'N, 'S1) acquiring projection images in different cardiac phases (cto c) and positions,'}{'sub': 0', 'N, 'S2) reconstructing 3D volume images in the different cardiac phases (cto c) from the projection images,'}S3) calculating a motion map from the 3D volume images,{'sub': 0', 'N, 'S4) performing image combination of the 3D volume images with the motion map to produce resulting, corrected 3D volume images in the different cardiac phases (cto c) and'}S5) presenting the resulting, corrected 3D volume images.2. The angiographic examination method as claimed in claim 1 , wherein the 3D volume images are used to form a mean value image (x claim 1 , y claim 1 , z) over all the cardiac phases claim 1 , which is included in the image combination according to method step S4.3. The angiographic examination method as claimed in claim 1 , wherein the resulting claim 1 , corrected 3D volume images are calculated according to the following equation:{'br': None, 'i': F', 'x, y, z, c', 'f', 'x, y, z, c', 'MM', 'x, y, z', {'o': {'@ostyle': 'single', 'f'}}, 'x, y, z', '−MM', 'x, y, z, 'sub': n', 'n, ...
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