公开(公告)号：US20160012615A1

公开(公告)日：2016-01-14

申请号：US14330198

申请日：2014-07-14

Applicant: General Electric Company

Inventor： Hewei Gao ,  Adam Cohen ,  Brian Edward Nett ,  Paavana Sainath ,  Yasuhiro Imai

IPC: G06T11/00 ,  A61B6/00 ,  A61B6/03

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/5205 ,  G06T2211/416

Abstract: A method is provided including acquiring imaging data of an object to be imaged from a computed tomography (CT) detector. The method also includes reconstructing the acquired imaging data into an initial reconstruction image, and performing material characterization of an image volume of the initial reconstruction image to provide a re-mapped image volume. Further, the method includes performing forward projection on the re-mapped image volume to provide forward projection data, and providing an error projection based on the forward projection data. Also, the method includes filtering at least one of the initial reconstruction image, the re-mapped image volume, the forward projection data, or the error projection. The method also includes using the error projection to update the initial reconstruction image to provide an updated reconstruction image.

Abstract translation: 提供一种方法，包括从计算机断层摄影（CT）检测器获取要被成像的对象的成像数据。 该方法还包括将获取的成像数据重建为初始重建图像，以及对初始重建图像的图像体积进行材料表征以提供重新映射的图像体积。 此外，该方法包括在再映射图像体积上执行向前投影以提供前向投影数据，以及基于前向投影数据提供误差投影。 此外，该方法包括对初始重构图像，重新映射的图像体积，前向投影数据或者误差投影中的至少一个进行滤波。 该方法还包括使用误差投影来更新初始重建图像以提供更新的重建图像。

公开(公告)号：US09483851B2

公开(公告)日：2016-11-01

申请号：US14330198

申请日：2014-07-14

Applicant: General Electric Company

Inventor： Hewei Gao ,  Adam Cohen ,  Brian Edward Nett ,  Paavana Sainath ,  Yasuhiro Imai

IPC: G06T11/00 ,  A61B6/03 ,  A61B6/00

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/5205 ,  G06T2211/416

Abstract: A method is provided including acquiring imaging data of an object to be imaged from a computed tomography (CT) detector. The method also includes reconstructing the acquired imaging data into an initial reconstruction image, and performing material characterization of an image volume of the initial reconstruction image to provide a re-mapped image volume. Further, the method includes performing forward projection on the re-mapped image volume to provide forward projection data, and providing an error projection based on the forward projection data. Also, the method includes filtering at least one of the initial reconstruction image, the re-mapped image volume, the forward projection data, or the error projection. The method also includes using the error projection to update the initial reconstruction image to provide an updated reconstruction image.

Abstract translation: 提供一种方法，包括从计算机断层摄影（CT）检测器获取要被成像的对象的成像数据。 该方法还包括将获取的成像数据重建为初始重建图像，以及对初始重建图像的图像体积进行材料表征以提供重新映射的图像体积。 此外，该方法包括在再映射图像体积上执行向前投影以提供前向投影数据，以及基于前向投影数据提供误差投影。 此外，该方法包括对初始重构图像，重新映射的图像体积，前向投影数据或者误差投影中的至少一个进行滤波。 该方法还包括使用误差投影来更新初始重建图像以提供更新的重建图像。