公开(公告)号：EP4294267A1

公开(公告)日：2023-12-27

申请号：EP22755717.0

申请日：2022-02-21

申请人： Ichilov Tech Ltd. ,  Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.

发明人： BEN BASHAT, Dafna ,  BEN SIRA, Liat ,  LINK, Daphna ,  AVISDRIS, Netanell ,  JOSKOWICZ, Leo

IPC分类号： A61B5/055 ,  G06T7/11

公开(公告)号：EP3097540B1

公开(公告)日：2018-07-11

申请号：EP15708891.5

申请日：2015-01-22

申请人： Yissum Research Development Company of The Hebrew University of Jerusalem Ltd.

发明人： JOSKOWICZ, Leo ,  MEDAN, Guy ,  KRONMAN, Achia

IPC分类号： G06T11/00

CPC分类号： G06T11/008 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/20048 ,  G06T2207/30016 ,  G06T2211/408 ,  G06T2211/428 ,  G06T2211/436

摘要： There are provided a method of CT volume reconstruction based on a baseline sinogram obtained by a prior scanning an object in B directions, and a system thereof. The method comprises: a) obtaining initial partial sinogram by initial repeat scanning the object in b directions out of B directions, b being substantially less than B; b) comparing the baseline sinogram and the initial partial sinogram to assess, for each voxel associated with the object, a likelihood of change; e) using the assessed likelihood of change for generating configuration data informative, at least, of rays to be cast in a further repeat scan in an un-scanned direction; d) performing a repeat scan in the un-scanned direction in accordance with the generated configuration data, thereby obtaining partial sinogram, and using the partial sinogram for updating the assessed likelihood of change; e) repeating operations c) and d) until all directions have been scanned to yield respective partial sinograms; f) composing the baseline and the partial sinograms into a composed sinogram; and g) processing the composed sinograms into an image of the object.

公开(公告)号：EP4348574A1

公开(公告)日：2024-04-10

申请号：EP22740531.3

申请日：2022-05-25

申请人： YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD ,  Hadasit Medical Research Services&Development Ltd.

发明人： JOSKOWICZ, Leo ,  SZESKIN, Adi ,  YEHUDA, Roei ,  LEVY, Jaime ,  SHMUELI, Or

IPC分类号： G06T7/00

公开(公告)号：EP3097540A1

公开(公告)日：2016-11-30

申请号：EP15708891.5

申请日：2015-01-22

申请人： Yissum Research Development Company of The Hebrew University of Jerusalem Ltd.

发明人： JOSKOWICZ, Leo ,  MEDAN, Guy ,  KRONMAN, Achia

IPC分类号： G06T11/00

CPC分类号： G06T11/008 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/20048 ,  G06T2207/30016 ,  G06T2211/408 ,  G06T2211/428 ,  G06T2211/436

摘要： There are provided a method of CT volume reconstruction based on a baseline sinogram obtained by a prior scanning an object in B directions, and a system thereof. The method comprises: a) obtaining initial partial sinogram by initial repeat scanning the object in b directions out of B directions, b being substantially less than B; b) comparing the baseline sinogram and the initial partial sinogram to assess, for each voxel associated with the object, a likelihood of change; e) using the assessed likelihood of change for generating configuration data informative, at least, of rays to be cast in a further repeat scan in an un-scanned direction; d) performing a repeat scan in the un-scanned direction in accordance with the generated configuration data, thereby obtaining partial sinogram, and using the partial sinogram for updating the assessed likelihood of change; e) repeating operations c) and d) until all directions have been scanned to yield respective partial sinograms; f) composing the baseline and the partial sinograms into a composed sinogram; and g) processing the composed sinograms into an image of the object.

摘要翻译： 提供了基于通过在B方向上的对象的先前扫描获得的基准正弦图的CT体积重建方法及其系统。 该方法包括：a）通过在B方向上b方向初始重复扫描物体获得初始部分正弦图，b基本上小于B; b）比较基准正弦图和初始部分正弦图，以评估与对象相关联的每个体素变化的可能性; e）使用评估的变化可能性来产生至少在未扫描方向上进一步重复扫描中要投射的射线的配置数据信息; d）根据生成的配置数据在未扫描的方向上执行重复扫描，从而获得部分正弦图，并且使用部分正弦图来更新评估的变化的可能性; e）重复操作c）和d）直到扫描所有方向以产生相应的部分正弦图; f）将基线和部分正弦图组成一个组成的正弦图; 并且g）将组合的正弦图处理成对象的图像。