公开(公告)号：US07680241B2

公开(公告)日：2010-03-16

申请号：US12305458

申请日：2007-06-13

申请人： Bernd David ,  Michael Grass ,  Astrid Fatou Lewalter ,  Rainer Pietig

发明人： Bernd David ,  Michael Grass ,  Astrid Fatou Lewalter ,  Rainer Pietig

IPC分类号： A61B6/00

CPC分类号： G01T1/2985 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/483 ,  A61B6/5282 ,  A61B6/583

摘要： A computed tomography reconstruction method includes concurrently emitting radiation from at least two x-ray sources (14), switching the output state of each of the at least two x-ray sources (14) within a plurality of respective cross scatter sampling intervals (50, 52, 54, 56) and detecting with a corresponding one of the sets of detectors (24) cross scatter radiation emitted by the other at least two x-ray sources (14), wherein the cross scatter sampling intervals are angularly spaced over a plurality of frames to allow the at least two x-ray sources (14) to concurrently emit radiation throughout at least one frame, deriving scatter correction data for each set of detectors (24) from corresponding cross scatter samples, scatter correcting the projection data with corresponding scatter correction data, and reconstructing the scatter corrected projection data to generate at least one image.

摘要翻译： 计算机断层摄影重建方法包括同时从至少两个X射线源（14）发射辐射，在多个相应的交叉散射采样间隔（50）内切换所述至少两个X射线源（14）中的每一个的输出状态 ，52,54,56），并且用所述检测器组（24）中的对应的一组检测由所述另外的至少两个x射线源（14）发射的散射辐射，其中所述交叉散射采样间隔在 多个帧以允许至少两个x射线源（14）同时在至少一个帧中发射辐射，从相应的交叉散射样本导出每组检测器（24）的散射校正数据，利用 对应的散射校正数据，以及重建散射校正投影数据以生成至少一个图像。

公开(公告)号：US20090279659A1

公开(公告)日：2009-11-12

申请号：US12305458

申请日：2007-06-13

申请人： Bernd David ,  Michael Grass ,  Astrid Fatou Lewalter ,  Rainer Pietig

发明人： Bernd David ,  Michael Grass ,  Astrid Fatou Lewalter ,  Rainer Pietig

IPC分类号： H05G1/60 ,  A61B6/00

CPC分类号： G01T1/2985 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/483 ,  A61B6/5282 ,  A61B6/583

摘要： A computed tomography reconstruction method includes concurrently emitting radiation from at least two x-ray sources (14), switching the output state of each of the at least two x-ray sources (14) within a plurality of respective cross scatter sampling intervals (50, 52, 54, 56) and detecting with a corresponding one of the sets of detectors (24) cross scatter radiation emitted by the other at least two x-ray sources (14), wherein the cross scatter sampling intervals are angularly spaced over a plurality of frames to allow the at least two x-ray sources (14) to concurrently emit radiation throughout at least one frame, deriving scatter correction data for each set of detectors (24) from corresponding cross scatter samples, scatter correcting the projection data with corresponding scatter correction data, and reconstructing the scatter corrected projection data to generate at least one image.

摘要翻译： 计算机断层摄影重建方法包括同时从至少两个X射线源（14）发射辐射，在多个相应的交叉散射采样间隔（50）内切换所述至少两个X射线源（14）中的每一个的输出状态 ，52,54,56），并且用所述检测器组（24）中的对应的一组检测由所述另外的至少两个x射线源（14）发射的散射辐射，其中所述交叉散射采样间隔在 多个帧以允许至少两个x射线源（14）同时在至少一个帧中发射辐射，从相应的交叉散射样本导出每组检测器（24）的散射校正数据，利用 对应的散射校正数据，以及重建散射校正投影数据以生成至少一个图像。