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公开(公告)号：US08183532B2
公开(公告)日：2012-05-22
申请号：US12441537
申请日：2007-09-10
CPC分类号： G01T1/17 , A61B6/027 , A61B6/037 , A61B6/503 , G01T1/1647
摘要： In a disclosed imaging method, the instantaneous speed or data acquisition dwell times of a detector head (14, 16) is optimized as a function of position along a path (P) of the detector head around a subject (S, SS, SXL). The optimization is respective to an expected radioactive emission profile (EPROI) of a region of interest (H, HS, HXL) that is less than the entire subject. The detector head is traversed along the path using the optimized instantaneous speed or data acquisition dwell times (40). During the traversing, imaging data are acquired using the detector head. The acquired imaging data are reconstructed to generate a reconstructed image of at least the region of interest. A gamma camera (10) configured to perform the foregoing imaging method is also disclosed.
摘要翻译： 在公开的成像方法中，检测器头（14,16）的瞬时速度或数据采集驻留时间被优化为围绕被检体（S，SS，SXL）的检测器头的路径（P）的位置的函数， 。 优化对应于小于整个受试者的感兴趣区域（H，HS，HXL）的预期放射性发射谱（EPROI）。 使用优化的瞬时速度或数据采集停留时间（40），检测器头沿路径运行。 在运行期间，使用检测器头获取成像数据。 所获取的成像数据被重建以生成至少感兴趣的区域的重建图像。 还公开了配置成执行上述成像方法的γ照相机（10）。
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公开(公告)号：US07989771B2
公开(公告)日：2011-08-02
申请号：US11913847
申请日：2006-05-01
IPC分类号： G01T1/161
CPC分类号： G01T1/1648 , A61B6/037 , A61B6/4258 , G01T1/1642
摘要： An imaging system (10) includes at least one radiation detector unit (16) disposed adjacent a field of view (20) to detect and measure radiation from the field of view (20). The detector unit (16) includes multiple detection modules (18) which each detects radiation from a prespecified region of the field of view (20), each region being a fraction of the field of view. One or more pinholes (52) are associated with the detector unit (16). Each pinhole (52) receives radiation from the prespecified region of the field of view (20) and transmits radiation to one or more associated detection modules (18).
摘要翻译： 成像系统（10）包括邻近视场（20）设置的至少一个辐射检测器单元（16），用于检测和测量来自视场（20）的辐射。 检测器单元（16）包括多个检测模块（18），每个检测模块检测来自视场（20）的预定区域的辐射，每个区域是视场的一部分。 一个或多个针孔（52）与检测器单元（16）相关联。 每个针孔（52）接收来自视野（20）的预定区域的辐射，并将辐射传输到一个或多个相关联的检测模块（18）。
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公开(公告)号：US20100046817A1
公开(公告)日：2010-02-25
申请号：US12441537
申请日：2007-09-10
CPC分类号： G01T1/17 , A61B6/027 , A61B6/037 , A61B6/503 , G01T1/1647
摘要： In a disclosed imaging method, the instantaneous speed or data acquisition dwell times of a detector head (14, 16) is optimized as a function of position along a path (P) of the detector head around a subject (S, SS, SXL). The optimization is respective to an expected radioactive emission profile (EPROI) of a region of interest (H, HS, HXL) that is less than the entire subject. The detector head is traversed along the path using the optimized instantaneous speed or data acquisition dwell times (40). During the traversing, imaging data are acquired using the detector head. The acquired imaging data are reconstructed to generate a reconstructed image of at least the region of interest. A gamma camera (10) configured to perform the foregoing imaging method is also disclosed.
摘要翻译： 在公开的成像方法中，检测器头（14,16）的瞬时速度或数据采集驻留时间被优化为围绕被检体（S，SS，SXL）的检测器头的路径（P）的位置的函数， 。 优化对应于小于整个受试者的感兴趣区域（H，HS，HXL）的预期放射性发射谱（EPROI）。 使用优化的瞬时速度或数据采集停留时间（40），检测器头沿路径运行。 在运行期间，使用检测器头获取成像数据。 所获取的成像数据被重建以生成至少感兴趣的区域的重建图像。 还公开了配置成执行上述成像方法的γ照相机（10）。
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公开(公告)号：US20090022279A1
公开(公告)日：2009-01-22
申请号：US11577093
申请日：2005-09-30
IPC分类号： G21K1/00
CPC分类号： G01T1/1648 , A61B6/037 , G01T1/1615 , G01T1/1644 , G21K1/025
摘要： A radiation imaging device suitable for SPECT or other nuclear imaging includes a detector (22) which receives radiation. A fan beam-slit collimator (20) is positioned adjacent a radiation receiving face (32) of the detector, intermediate the detector and a radiation source (12, 18). The collimator includes a plurality of slats (30) having a common focus. A body (44) adjacent the slats defines one or more elongate slits (46). The slit is arranged such that radiation passes through the slit and between the slats to the detector face. The body is at least substantially impermeable to the radiation. The fan beam-slit collimator (20) enables higher resolution or efficiency to be achieved from the detector.
摘要翻译： 适用于SPECT或其他核成像的辐射成像装置包括接收辐射的检测器（22）。 风扇光束狭缝准直器（20）位于检测器的辐射接收面（32）附近，位于检测器和辐射源（12,18）之间。 准直器包括具有共同焦点的多个板条（30）。 邻近板条的主体（44）限定一个或多个细长狭缝（46）。 狭缝被布置成使得辐射通过狭缝并且在板条之间穿过检测器面。 身体至少对辐射是不可渗透的。 扇形光束狭缝准直器（20）能够从检测器获得更高的分辨率或效率。
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公开(公告)号：US20110251478A1
公开(公告)日：2011-10-13
申请号：US12672077
申请日：2008-08-06
CPC分类号： A61B5/1127 , A61B5/055 , A61B5/706 , A61B6/037 , A61B6/4258 , A61B90/39 , A61B2090/3937 , A61B2090/3945
摘要： In a medical system, at least one medically operative member (10, 12, 100) is configured to interact with or acquire data from a subject (74) disposed in an examination region. An array of photosensors (70, 170) is disposed on the at least one medically operative member. The array of photosensors is arranged to view the examination region. A position-determining member (82, 82a, 82b) is configured to determine a position of at least one optically detectable marker (72, 172) disposed with the subject in the examination region based on light from the at least one optically detectable marker sensed by the array of photosensors.
摘要翻译： 在医疗系统中，至少一个医疗操作的构件（10,12,100）配置成与设置在检查区域中的被检体（74）相互作用或从其获取数据。 一组光传感器（70,170）设置在至少一个医疗操作部件上。 安排了一系列光传感器来查看检查区域。 位置确定构件（82,82a，82b）被配置为基于所检测到的至少一个光学可检测标记的光来确定在检查区域中与受检者一起设置的至少一个光学可检测标记（72,172）的位置 通过光电传感器阵列。
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公开(公告)号：US07683333B2
公开(公告)日：2010-03-23
申请号：US11577093
申请日：2005-09-30
IPC分类号： G21K1/02
CPC分类号： G01T1/1648 , A61B6/037 , G01T1/1615 , G01T1/1644 , G21K1/025
摘要： A radiation imaging device suitable for SPECT or other nuclear imaging includes a detector (22) which receives radiation. A fan beam-slit collimator (20) is positioned adjacent a radiation receiving face (32) of the detector, intermediate the detector and a radiation source (12, 18). The collimator includes a plurality of slats (30) having a common focus. A body (44) adjacent the slats defines one or more elongate slits (46). The slit is arranged such that radiation passes through the slit and between the slats to the detector face. The body is at least substantially impermeable to the radiation. The fan beam-slit collimator (20) enables higher resolution or efficiency to be achieved from the detector.
摘要翻译： 适用于SPECT或其他核成像的辐射成像装置包括接收辐射的检测器（22）。 扇形光束狭缝准直器（20）位于检测器的辐射接收面（32）附近，位于检测器和辐射源（12,18）之间。 准直器包括具有共同焦点的多个板条（30）。 邻近板条的主体（44）限定一个或多个细长狭缝（46）。 狭缝被布置成使得辐射通过狭缝并且在板条之间穿过检测器面。 身体至少对辐射是不可渗透的。 扇形光束狭缝准直器（20）能够从检测器获得更高的分辨率或效率。
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17.发明授权公开(公告)号：US06429718B1
公开(公告)日：2002-08-06
申请号：US09469334
申请日：1999-12-22
IPC分类号： G06F764
CPC分类号： H03G3/001
摘要： The invention relates to a computer tomograph provided with a charge-integrating read amplifier having a plurality of gain factors for a data acquisition system as well as a control circuit for the gain factor. In order to avoid noise in addition to the shot noise in computer tomographs of this kind and also to avoid degrading of the DQE (Detection Quantum Efficiency), according to the invention it is proposed that the control circuit automatically selects the gain factor in dependence on the expected integrated input signal of the next frame, the expectation being based on the maximum possible relative variation of the integrated input signal between two successive frames.
摘要翻译： 本发明涉及具有电荷积分读取放大器的计算机断层摄影机，该放大器具有用于数据采集系统的多个增益因子以及用于增益因子的控制电路。 为了避免这种计算机断层扫描中的散粒噪声以及除了DQE（检测量子效率）的劣化之外的噪声，根据本发明，提出了控制电路根据 预期下一帧的积分输入信号，期望是基于两个连续帧之间的积分输入信号的最大可能的相对变化。
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