公开(公告)号：EP1077383A3

公开(公告)日：2002-01-02

申请号：EP00307041.4

申请日：2000-08-17

申请人： Marconi Medical Systems, Inc.

发明人： Cooke, Steven E. ,  Matthews, Christopher G. ,  Vesel, John F.

IPC分类号： G01T1/29 ,  G01T1/164

CPC分类号： G01T1/2985 ,  A61B6/037 ,  G01T1/172

摘要： In positron emission imaging, coincident gamma ray pairs are acquired and processed to generate an image. Random gamma ray pairs in the acquired coincidence data degrade the quality of the resultant image. The coincident gamma ray pairs are re-paired to generate non-coincident gamma ray pairs. The non-coincident pairs are used to correct for randoms in the acquired coincidence data. Alternately, singles gamma rays may be detected and paired with non-coincident single gamma rays to generate non-coincident pairs. These pairs may be used to correct for randoms in the acquired coincidence data.

公开(公告)号：EP1008865A2

公开(公告)日：2000-06-14

申请号：EP99309824.3

申请日：1999-12-07

申请人： Marconi Medical Systems, Inc.

发明人： Gagnon, Daniel ,  Matthews, Christopher G.

IPC分类号： G01T1/164

CPC分类号： G01T1/1648

摘要： A radiation detector includes slit collimator. A radiation detector receives radiation which has been received in each of the slits. The aspect ratio of the detector is approximately three, and each semiconductor radiation detector (106) has a transverse dimension (C y ) which is less than that of its respective slit (W y ). A reconstruction processor generates an image indicative of the radiation received by the detectors. The detector may be rotated about a fixed axis (109). Alternately, the detector may be translated in coordination with its rotation to provide a substantially square field of view.

摘要翻译： 辐射检测器包括狭缝准直仪。 辐射检测器接收已经接收在每个狭缝中的辐射。 检测器的纵横比近似为3，每个半导体辐射检测器（106）的横向尺寸（Cy）小于其相应狭缝（Wy）的横向尺寸。 重构处理器产生指示由检测器接收的辐射的图像。 检测器可以围绕固定轴线（109）旋转。 或者，检测器可以与其旋转协调地平移以提供基本上正方形的视场。

公开(公告)号：EP1008865A3

公开(公告)日：2003-03-05

申请号：EP99309824.3

申请日：1999-12-07

申请人： Marconi Medical Systems, Inc.

发明人： Gagnon, Daniel ,  Matthews, Christopher G.

IPC分类号： G01T1/164

CPC分类号： G01T1/1648

摘要： A radiation detector includes slit collimator. A radiation detector receives radiation which has been received in each of the slits. The aspect ratio of the detector is approximately three, and each semiconductor radiation detector (106) has a transverse dimension (C y ) which is less than that of its respective slit (W y ). A reconstruction processor generates an image indicative of the radiation received by the detectors. The detector may be rotated about a fixed axis (109). Alternately, the detector may be translated in coordination with its rotation to provide a substantially square field of view.

公开(公告)号：EP1077383A2

公开(公告)日：2001-02-21

申请号：EP00307041.4

申请日：2000-08-17

申请人： Marconi Medical Systems, Inc.

发明人： Cooke, Steven E. ,  Matthews, Christopher G. ,  Vesel, John F.

IPC分类号： G01T1/29

CPC分类号： G01T1/2985 ,  A61B6/037 ,  G01T1/172

摘要： In positron emission imaging, coincident gamma ray pairs are acquired and processed to generate an image. Random gamma ray pairs in the acquired coincidence data degrade the quality of the resultant image. The coincident gamma ray pairs are re-paired to generate non-coincident gamma ray pairs. The non-coincident pairs are used to correct for randoms in the acquired coincidence data. Alternately, singles gamma rays may be detected and paired with non-coincident single gamma rays to generate non-coincident pairs. These pairs may be used to correct for randoms in the acquired coincidence data.

摘要翻译： 在正电子发射成像中，获取并处理重合的伽马射线对以产生图像。 所获得的符合数据中的随机伽马射线对降低所得图像的质量。 重合伽马射线对被重新配对以产生非重合伽马射线对。 不一致的对用于校正所获取的重合数据中的随机数。 或者，可以检测单个γ射线并与非重合的单个伽马射线配对以产生非重合对。 这些对可用于校正所获取的重合数据中的随机数。