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81. 发明授权

US5519224A Method of localizing scintillation events detected by scintillation camera systems 失效
标题翻译：闪烁相机系统检测闪烁事件的定位方法
公开(公告)号：US5519224A
公开(公告)日：1996-05-21
申请号：US347525
申请日：1994-11-30
申请人： Detlef Mattern
发明人： Detlef Mattern
IPC分类号： G01T1/164 , G01T1/20
CPC分类号： G01T1/1642
摘要： When a PMT "views" a scintillation event in the scintillation crystal of a scintillation camera system, the PMT produces an output signal. Based on the output signal, the event can be localized to a circular locus of points ("PMT locus"). Further localization can be accomplished on the basis of straight lines which are unambigously determined by intersections between such PMT loci.
摘要翻译：当PMT在闪烁照相机系统的闪烁晶体中“闪烁”闪烁事件时，PMT产生输出信号。基于输出信号，事件可以被定位到点的圆形轨迹（“PMT轨迹”）。可以基于通过这样的PMT基因座之间的交叉明确确定的直线来实现进一步的定位。

82. 发明授权

US5479021A Transmission line source assembly for spect cameras 失效
标题翻译：用于光学相机的传输线源组件
公开(公告)号：US5479021A
公开(公告)日：1995-12-26
申请号：US155015
申请日：1993-11-19
申请人： Hugh T. Morgan , Bryce G. Thornton
发明人： Hugh T. Morgan , Bryce G. Thornton
IPC分类号： A61B5/107 , A61B6/00 , A61B6/03 , A61B6/10 , A61B8/08 , G01T1/164 , G01T1/29 , G01T7/00 , G06T11/00 , G21K1/02 , G01T1/00 , G21F3/00 , G21K5/00
CPC分类号： A61B6/032 , A61B6/037 , A61B6/107 , A61B6/4014 , A61B6/4417 , A61B6/4429 , A61B6/482 , A61B6/589 , A61B8/0858 , A61B8/4416 , G01T1/1615 , G01T1/1642 , G01T1/1648 , G01T1/2985 , G06T11/005 , G21K1/025 , A61B5/1077 , G06T2211/432
摘要： A rotatable gantry portion (16) is rotatably mounted on the stationary gantry portion (18) of a SPECT camera. A plurality of radiation detector heads (10a, 10b, 10c) are mounted to the rotating gantry. A transmission radiation source holder and collimator assembly (40, 42) is mounted to the rotatable gantry portion opposite one of the detector heads. A transmission radiation source (60) is mounted in a lead shield (62) with an opening (64) pointing toward an examination region (12). A shutter (66) is rotatable between a closed position in which a lead arc segment (70) blocks the opening (64), a calibration orientation in which tin (72) covers opening (64), and an open position in which an opening (74) is aligned with the opening (64). A safety interlock means (80) locks the shutter in the closed position and against rotation when the radiation source holder is removed from the rotatable gantry portion. A collimator (42) has lead side walls (200) and tin or tin alloy septa (202). When radiation from the radiation source strikes the lead side walls, they emit characteristic lead x-rays of about 88 keV whereas the tin radiates x-rays of only about 30 keV. A filter (210) includes an inner layer (212) of tin for attenuating any remaining 88 keV lead x-rays coming from the transmission line source assembly and converting them to about 30 keV radiation. The filter has an outer layer (214) for attenuating the radiation around 30 keV.
摘要翻译：可旋转机架部分（16）可旋转地安装在SPECT相机的固定机架部分（18）上。多个辐射探测头（10a，10b，10c）安装在旋转机架上。透射辐射源保持器和准直器组件（40,42）安装到与检测器头之一相对的可旋转机架部分。传输辐射源（60）安装在具有指向检查区域（12）的开口（64）的引线屏蔽（62）中。挡板（66）可在其中引线弧段（70）阻挡开口（64）的闭合位置和锡（72）覆盖开口（64）的校准方向以及打开位置（74）与开口（64）对准。当辐射源保持器从可旋转机架部分移除时，安全联锁装置（80）将快门锁定在关闭位置并防止旋转。准直器（42）具有引线侧壁（200）和锡或锡合金隔片（202）。当来自辐射源的辐射撞击引线侧壁时，它们发射约88keV的特征引线x射线，而锡辐射仅约30keV的X射线。过滤器（210）包括锡的内层（212），用于衰减来自传输线源组件的任何剩余的88keV引线x射线，并将其转换成约30keV辐射。滤光器具有用于衰减约30keV的辐射的外层（214）。

83. 发明授权

US5457321A Spect apparatus utilizing fan-parallel data conversion 失效
标题翻译：利用扇形并行数据转换的光谱装置
公开(公告)号：US5457321A
公开(公告)日：1995-10-10
申请号：US237421
申请日：1994-05-03
申请人： Takashi Ichihara , Akiyoshi Kinda
发明人： Takashi Ichihara , Akiyoshi Kinda
IPC分类号： G01T1/164 , G01T1/166
CPC分类号： G01T1/1648 , G01T1/1642 , A61B6/037 , Y10S378/901
摘要： A SPECT apparatus for forming a radioisotope distribution topographic image of an object, in which a detector such as a fan beam collomator detects fan beam shaped gamma ray emitted from a radioisotope given to the object to provide fan beam data, while a scanner causes relative rotation between the object and the detecter, and a data collector collects the fan beam data, and in which a data converter successively converts the fan beam data into parallel beam data during the relative rotation, and a reconstructor reconstructs a tomographic image from the parallel beam data. The fan beam data having a first matrix size and a first angle may be converted into the parallel beam data having a second matrix size and a second angle which are different from the first matrix size and the first angle, respectively.
摘要翻译：一种用于形成物体的放射性同位素分布地形图像的SPECT装置，其中诸如风扇光束胶体仪的检测器检测从给予对象的放射性同位素发射的扇形束形伽马射线，以提供风扇光束数据，同时扫描器引起相对旋转在物体和检测器之间，并且数据收集器收集风扇光束数据，并且其中数据转换器在相对旋转期间将风扇光束数据连续地转换为并行光束数据，并且重构器从平行光束数据重建断层图像。具有第一矩阵尺寸和第一角度的风扇光束数据可以被转换成具有分别与第一矩阵尺寸和第一角度不同的第二矩阵尺寸和第二角度的平行光束数据。

84. 发明授权

US5442181A Radiation detector and its manufacturing method 失效
标题翻译：辐射探测器及其制造方法
公开(公告)号：US5442181A
公开(公告)日：1995-08-15
申请号：US218297
申请日：1994-03-28
申请人： Tsutomu Yamakawa , Keisei Shuto , Takuzou Takayama
发明人： Tsutomu Yamakawa , Keisei Shuto , Takuzou Takayama
IPC分类号： G01T1/164 , G01T1/202
CPC分类号： G01T1/1642
摘要： A radiation detector includes a plate-like monocrystal for converting a radiation ray radiated from an object to be examined to a visible ray, a glass plate provided on the monocrystal for transmitting the visible ray generated in the monocrystal and a plurality of photomultipliers arranged on the glass plate for converting the visible ray inputted through the glass plate from the monocrystal to an electrical signal.
摘要翻译：放射线检测器包括用于将从被检测物体辐射的放射线转换成可见光的板状单晶体，设置在单晶上的玻璃板，用于透射在单晶中产生的可见光，以及多个光电倍增管，玻璃板，用于将通过玻璃板输入的可见光从单晶转换成电信号。

85. 发明授权

US5428223A Minicamera for proximity detection of nuclear radiation emitted by a radioisotope, and its application as a surgical tool 失效
标题翻译：用于放射性同位素发射的核辐射的近距离检测的微型CCD及其作为外科手术的应用
公开(公告)号：US5428223A
公开(公告)日：1995-06-27
申请号：US232924
申请日：1994-04-25
申请人： Michel Jatteau , Pierre Klein
发明人： Michel Jatteau , Pierre Klein
IPC分类号： G01T1/161 , A61B19/00 , G01T1/164 , G01T1/166 , G01T1/20
CPC分类号： G01T1/1642 , A61B6/4258 , G01T1/166
摘要： A minicamera detects at least one .beta. and .gamma. nuclear radiation (or assimilated) emitted by a radioisotope present in a body (1, 2). Its image pick-up head (300) includes a collimator (301), a scintillator (302) and a photodetector assembly (303 to 309). In accordance with the invention, the image pick-up head (300) also includes a modulating grid (312) with holes which is arranged between the collimator (301) and the scintillator (302). The grid can completely open or close the collimator under the influence of a suitable mechanism (313). The signals acquired by the photodetector assembly in the open position are applied to a first image memory (423) whereas those acquired in the closed position are applied to a second image memory (424). Comparison and calculation means (421) provide the desired useful signal by simple subtraction of the contents of the two memories (423, 424).
摘要翻译：小型迷幻探测器检测由身体（1,2）中存在的放射性同位素发射的至少一种β和γ核辐射（或同化的）。其图像拾取头（300）包括准直器（301），闪烁体（302）和光电检测器组件（303至309）。根据本发明，图像拾取头（300）还包括布置在准直器（301）和闪烁体（302）之间的具有孔的调制栅格（312）。栅格可以在合适的机构（313）的影响下完全打开或关闭准直器。由光电检测器组件在打开位置获取的信号被施加到第一图像存储器（423），而在闭合位置采集的信号被施加到第二图像存储器（424）。比较和计算装置（421）通过简单地减去两个存储器（423,424）的内容来提供期望的有用信号。

86. 发明授权

US5377681A Method of diagnosing impaired blood flow 失效
标题翻译：诊断血流受损的方法
公开(公告)号：US5377681A
公开(公告)日：1995-01-03
申请号：US242708
申请日：1994-05-13
申请人： Walter E. Drane
发明人： Walter E. Drane
IPC分类号： G01T1/164 , A61B5/05 , A61B6/00
CPC分类号： G01T1/1642 , A61B6/037 , A61B6/507
摘要： A method of diagnosing impaired blood flow to an organ. The method is especially useful in patients which cannot undergo stress testing due to risk factors.
摘要翻译：诊断器官受损血流的方法。该方法对于因危险因素不能进行压力测试的患者特别有用。

87. 发明授权

US5376795A Emission-transmission imaging system using single energy and dual energy transmission and radionuclide emission data 失效
标题翻译：使用单能量和双能量传输和放射性核素发射数据的发射透射成像系统
公开(公告)号：US5376795A
公开(公告)日：1994-12-27
申请号：US958980
申请日：1992-10-09
申请人： Bruce H. Hasegawa , Robert G. Gould , Thomas F. Lang , J. Keenan Brown , Joseph A. Heanue , Christopher E. Cann
发明人： Bruce H. Hasegawa , Robert G. Gould , Thomas F. Lang , J. Keenan Brown , Joseph A. Heanue , Christopher E. Cann
IPC分类号： G01T1/164 , G01T1/29 , H05G1/60 , G01T1/166
CPC分类号： G01T1/1615 , A61B6/037 , A61B6/5235 , G01T1/1611 , G01T1/1642 , G01T1/1647 , G01T1/1648 , G01T1/2985 , H05G1/60
摘要： Radionuclide emission imaging is improved by correcting emission-transmission data for attenuation along calculated path lengths and through calculated basis material. X-ray transmission data are used to develop an attenuation map through an object which is then used in reconstructing an image based on emission data, Radiation detection circuitry is provided which has different operating modes in detecting the x-ray and emission photons passing through the object. An iterative process is used to reconstruct the radionuclide distribution using the radionuclide projection data and the attenuation map based on physical characteristics of the object being imaged. Subsets of the complete radionuclide projection data are used to reconstruct image subsets of the radionuclide distribution. The image subsets can be generated concurrently with the acquisition of the radionuclide projection data or following acquisition of all data.
摘要翻译：通过根据计算的路径长度和通过计算的基础材料校正用于衰减的发射数据来改善放射性核素发射成像。 X射线透射数据用于通过物体开发衰减图，该物体然后用于基于发射数据重建图像。提供了辐射检测电路，其在检测通过X射线的x射线和发射光子时具有不同的操作模式目的。迭代过程用于使用放射性核素投影数据和基于被成像对象的物理特性的衰减图来重构放射性核素分布。完整的放射性核素投影数据的子集用于重建放射性核素分布的图像子集。图像子集可以与获取放射性核素投影数据同时产生，也可以在获取所有数据之后产生。

88. 发明授权

US5371370A Gamma radiation camera systems 失效
标题翻译：伽玛射线照相机系统
公开(公告)号：US5371370A
公开(公告)日：1994-12-06
申请号：US182990
申请日：1994-01-19
申请人： John A. Lightfoot
发明人： John A. Lightfoot
IPC分类号： G01T1/29 , G01T1/00 , G01T1/164 , G01T1/20 , G01D18/00
CPC分类号： G01T1/1642 , G01T1/2018
摘要： A gamma radiation camera system that utilizes a gamma blocking object which is removably located in the field of view of a gamma detector and blocks at least a portion of gamma radiation, emitted from a scene, from the detector and thereby forming a two-dimensional image of the scene. Further, individual components received by the detector from the scene provide an output signal to respective processing circuitry. The difference is then determined between components of a first output signal obtained when the object is present in the field of view of the detector and components of a second output signal obtained when the object is not present in the field of view.
摘要翻译：一种伽马射线照相机系统，其利用可移除地位于伽马检测器的视场中的伽马阻挡物体，并且从所述检测器阻挡从场景发射的伽马辐射的至少一部分，从而形成二维图像的现场。此外，来自场景的检测器接收到的各个组件向相应的处理电路提供输出信号。然后在检测器的视野中存在对象时获得的第一输出信号的分量和当对象不在视场中时获得的第二输出信号的分量之间确定差异。

89. 发明授权

US5349190A Adjustable triple-detector image data acquisition system 失效
标题翻译：可调三重检测器图像数据采集系统
公开(公告)号：US5349190A
公开(公告)日：1994-09-20
申请号：US801551
申请日：1991-12-02
申请人： Horace Hines , Paul Hug , Mark L. Lamp
发明人： Horace Hines , Paul Hug , Mark L. Lamp
IPC分类号： G01T1/164 , G01T1/166
CPC分类号： G01T1/1642 , A61B6/037 , G01T1/1648 , G01T1/166
摘要： An image data acquisition system for performing SPECT imaging and other types of imaging used in nuclear medicine includes an assembly of three detectors and a mechanical system for adjusting the relative angles of the detector image direction arrows, displacing the individual detectors along the image direction arrows, and rotating and displacing the detector assembly.
摘要翻译：用于执行SPECT成像的图像数据采集系统和用于核医学中的其它类型的成像包括三个检测器的组件和用于调整检测器图像方向箭头的相对角度的机械系统，沿着图像方向箭头移位各个检测器，以及旋转和移动检测器组件。

90. 发明授权

US5347455A Scintillation camera 失效
标题翻译：闪烁相机
公开(公告)号：US5347455A
公开(公告)日：1994-09-13
申请号：US139812
申请日：1993-10-22
申请人： Takashi Ichihara
发明人： Takashi Ichihara
IPC分类号： G01T1/164 , G06F15/42
CPC分类号： G01T1/1642
摘要： A scintillation camera comprises a camera body for detecting a .gamma.-ray emitted from radioisotope provided to a human body to be examined in a predetermined period of time, means for measuring an incident position of the .gamma.-ray and its density based on the detection result of the camera body, and means for generating a density distribution of the .gamma.-ray for every incident position based on the measurement result of the measuring means, thereby obtaining the density distribution of the .gamma.-ray for every incident position.
摘要翻译：闪烁照相机包括用于检测在预定时间段内提供给待检测人体的放射性同位素发射的伽马射线的相机体，基于检测结果测量伽马射线的入射位置及其密度的装置以及用于根据测量装置的测量结果为每个入射位置生成伽马射线的密度分布的装置，从而获得每个入射位置的伽马射线的密度分布。

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