公开(公告)号：US20150065854A1

公开(公告)日：2015-03-05

申请号：US13665551

申请日：2012-10-31

Applicant: General Electric Company

Inventor： Sangtae Ahn ,  Ravindra Mohan Manjeshwar

IPC: A61B6/00 ,  G01R33/385 ,  A61B6/03 ,  G01R33/48

CPC classification number: A61B6/4417 ,  A61B6/037 ,  A61B6/5247 ,  G01R33/481

Abstract: Methods, systems and non-transitory computer readable media for imaging are disclosed. Emission projection data corresponding to a target region of a subject is acquired using an emission tomography system. Additionally, one or more magnetic resonance images of the target region are generated using a magnetic resonance imaging system operatively coupled to the emission tomography system. A partially-determined attenuation map is determined by identifying one or more regions in the partially-determined attenuation map with a designated confidence level based on the magnetic resonance images. Further, a complete attenuation map and/or a complete activity map is reconstructed from the emission projection data using the partially-determined attenuation map as a constraint. One or more images corresponding to the target region are then generated based on the partially-determined attenuation map, the complete attenuation map and/or the complete activity map.

Abstract translation: 公开了用于成像的方法，系统和非暂时计算机可读介质。 使用发射断层摄影系统获取与被检体的目标区域对应的发射投影数据。 另外，使用可操作地耦合到发射断层摄影系统的磁共振成像系统来产生目标区域的一个或多个磁共振图像。 通过基于磁共振图像以指定的置信水平识别部分确定的衰减图中的一个或多个区域来确定部分确定的衰减图。 此外，使用部分确定的衰减图作为约束，从发射投影数据重建完整的衰减图和/或完整的活动图。 然后基于部分确定的衰减图，完整的衰减图和/或完整的活动图来产生对应于目标区域的一个或多个图像。