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公开(公告)号：EP0863410A2
公开(公告)日：1998-09-09
申请号：EP98301287.3
申请日：1998-02-19
IPC分类号： G01T1/164
CPC分类号： G01T1/2985 , G01T1/172
摘要： A camera for use in coincidence imaging includes detectors (10a, 10b) disposed about an examination region (12). Coincidence logic (]4) determines whether gamma rays are detected by each of the detectors (10a, 10b) occur within a specified time interval. If so, the energy and positions of the detected events are determined. Energy discrimination circuitry (20a, 20b) associated with each detector (10a, 10b) determines if the detected events fall within a specified energy window. A list mode processor (22) generates a list of coincidence events. A rebinning processor (24) rebins the events, and a weight processor (26) weights each coincidence event based on the energy of the detected gamma rays.
摘要翻译： 生成图像包括：（a）检测正电子湮灭事件的特征性γ射线; （b）确定所检测的伽马射线的能量; （c）基于所确定的能量，将正电子湮灭事件分配给至少三个不同权重之一; （d）重复检测，确定和分配多个正电子湮灭事件; 和（e）生成指示加权事件的图像。 还要求保护的是用于产生上述图像的伽马照相机。
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公开(公告)号：EP0844498A1
公开(公告)日：1998-05-27
申请号：EP97309527.6
申请日：1997-11-26
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , A61B6/037
摘要： An imaging apparatus includes a pair radiation sensitive detector heads 10a, 10b disposed on opposite sides of the patient. The detectors and patient are moved relative to each other in an axial direction while the relative angular orientation of the detectors and the patient is held constant. Positron annihilation events occurring within the anatomy of a patient are detected and used to reconstruct an image. According to one reconstruction technique, a focal plane method is used. The intersections of the lines of coincidence and a plurality of image planes is determined, and a series of images indicative of the intersections is generated.
摘要翻译： 成像装置包括设置在患者的相对侧上的一对辐射敏感检测器头10a，10b。 检测器和患者在轴向上相对于彼此移动，同时检测器和患者的相对角度取向保持恒定。 在患者的解剖结构内发生的正电子湮灭事件被检测并用于重建图像。 根据一种重建技术，使用焦平面法。 确定符合线和多个图像平面的交点，并且生成指示相交的一系列图像。
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