公开(公告)号：US20070090300A1

公开(公告)日：2007-04-26

申请号：US11251232

申请日：2005-10-14

申请人： Merence Sibomana ,  Mark Lenox ,  Larry Byars ,  Christian Michel ,  Danny Newport

发明人： Merence Sibomana ,  Mark Lenox ,  Larry Byars ,  Christian Michel ,  Danny Newport

IPC分类号： G01N23/04 ,  G01T1/24

CPC分类号： G01T1/1615

摘要： Emission contamination data are collected in a shifted mock scan simultaneous with the collection of transmission data during a transmission scan of a patient with a collimated gamma point source, the transmission data are corrected with the emission contamination data, and the corrected transmission data are used for attenuation correction of emission data for reconstruction of an emission image of the patient. In a preferred implementation, when the point source is at a particular axial location and illuminates an axial beamwidth of “Fz” over the gamma detector, emission contamination data are collected from the gamma detector over an axial separated region “Fz′” having about the same axial extent but axially displaced by about half of the axial field of view (FOV).

摘要翻译： 在具有准直伽马点源的患者的发射扫描期间，与移动模拟扫描同时收集发射污染数据，传输数据用排放污染数据进行校正，校正的传输数据用于 用于重建患者的发射图像的发射数据的衰减校正。 在优选实施方案中，当点源处于特定的轴向位置并且照亮伽马检测器上的“Fz”的轴向波束宽度时，从伽马检测器沿着具有大约的轴的分离区域“Fz”收集发射污染数据 相同的轴向范围，但轴向位移约轴向视场（FOV）的一半。

公开(公告)号：US07324624B2

公开(公告)日：2008-01-29

申请号：US11251232

申请日：2005-10-14

申请人： Merence Sibomana ,  Mark W. Lenox ,  Larry Byars ,  Christian J. Michel ,  Danny Newport

发明人： Merence Sibomana ,  Mark W. Lenox ,  Larry Byars ,  Christian J. Michel ,  Danny Newport

IPC分类号： G01T1/29

CPC分类号： G01T1/1615

摘要： Emission contamination data are collected in a shifted mock scan simultaneous with the collection of transmission data during a transmission scan of a patient with a collimated gamma point source, the transmission data are corrected with the emission contamination data, and the corrected transmission data are used for attenuation correction of emission data for reconstruction of an emission image of the patient. In a preferred implementation, when the point source is at a particular axial location and illuminates an axial beamwidth of “Fz” over the gamma detector, emission contamination data are collected from the gamma detector over an axial separated region “Fz′” having about the same axial extent but axially displaced by about half of the axial field of view (FOV).

摘要翻译： 在具有准直伽马点源的患者的发射扫描期间，与移动模拟扫描同时收集发射污染数据，传输数据用排放污染数据进行校正，校正的传输数据用于 用于重建患者的发射图像的发射数据的衰减校正。 在优选实施方案中，当点源处于特定的轴向位置并且照亮伽马检测器上的“Fz”的轴向波束宽度时，从伽马检测器沿着具有大约的轴的分离区域“Fz”收集发射污染数据 相同的轴向范围，但轴向位移约轴向视场（FOV）的一半。