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91. 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。

92. 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。

93. 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。

94. 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。

95. 发明授权

US5285072A Process for the localization of multiple scintillation events in a gamma camera 失效
标题翻译：伽马相机中多次闪烁事件定位的过程
公开(公告)号：US5285072A
公开(公告)日：1994-02-08
申请号：US934934
申请日：1992-08-25
申请人： Klaus Klingenbeck-Regn , Bernhard Conrad
发明人： Klaus Klingenbeck-Regn , Bernhard Conrad
IPC分类号： G01T1/164 , G01T1/17
CPC分类号： G01T1/17 , G01T1/1642
摘要： In a method for the localization of scintillation events in a gamma camera with a number of photomultipliers the output signals of the photomultipliers, in dependence on a release signal, are subjected to a pattern recognition process. In the pattern recognition process the output signals are compared with comparative signal sets which each comprise the expected values of output signals from photomultipliers which would be generated by several comparative scintillation events with at respective origins at known locations. The locations of the multiple scintillation events are then registered as the origins that belong to a comparative signal set which presents the greatest similarity value to the output signals in question.
摘要翻译：在用于将具有多个光电倍增管的γ相机中的闪烁事件定位的方法中，依赖于释放信号的光电倍增管的输出信号经受模式识别处理。在模式识别处理中，将输出信号与比较信号组进行比较，每个比较信号组包括来自光电倍增器的输出信号的预期值，这些信号将由在已知位置的各个起点处的几个比较闪烁事件产生。然后将多个闪烁事件的位置记录为属于与所讨论的输出信号呈现最大相似度值的比较信号组的起始。

96. 发明授权

US5249124A Multi-isotope imaging using energy-weighted acquisition for, e.g., myocardial perfusion studies 失效
标题翻译：多重同位素成像使用能量加权获取，E.G.，MYOCARDIAL PERFUSION STUDIES
公开(公告)号：US5249124A
公开(公告)日：1993-09-28
申请号：US685940
申请日：1991-04-16
申请人： Raymond P. DeVito
发明人： Raymond P. DeVito
IPC分类号： G01T1/164
CPC分类号： G01T1/1642 , A61B6/4258 , A61B6/037
摘要： A multi-isotope study is carried out using a plurality of imaging agents which are imaged simultaneously. The information obtained is weighted using as many energy weighting functions as there are isotopes. The weighting reduces "crosstalk" between each of the single-isotope images which are produced as a result of the study. This produces improved results in, for example, dual-isotope (Tc-99m and Tl-201) myocardial perfusion studies.
摘要翻译：使用同时成像的多个成像剂进行多同位素研究。所获得的信息使用与同位素一样多的能量加权函数进行加权。加权减少了作为研究结果产生的每个单同位素图像之间的“串扰”。这在例如双重同位素（Tc-99m和T1-1201）心肌灌注研究中产生改善的结果。

97. 发明授权

US5227968A Method for eliminating scattered .gamma.-rays and reconstructing image, and gamma camera apparatus 失效
标题翻译：用于消除散射（伽马） - 重播和重构图像的方法，以及伽马相机装置
公开(公告)号：US5227968A
公开(公告)日：1993-07-13
申请号：US501039
申请日：1990-03-29
申请人： Takashi Ichihara
发明人： Takashi Ichihara
IPC分类号： G01T1/164
CPC分类号： G01T1/1642
摘要： A method of eliminating scattered gamma rays and collecting an image comprises the steps of detecting a radioisotope (RI) given to a living body, to form an RI distribution image, and eliminating scattered gamma rays generated in the living body or a gamma camera from the RI distribution image. In this case, the energy spectrums of gamma rays incident to individual positions in the gamma camera in association with pixels of the RI distribution image are collected at the same time as or during the collection of the RI distribution image. A ratio of the scattered gamma rays with respect to the RI distribution image is acquired from the energy spectrum for each position, and a scattered gamma ray component is eliminated from the RI distribution image for each pixel, by multiplying the ratio of the scattered gamma rays to the RI distribution image.

98. 发明授权

US5155365A 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：US5155365A
公开(公告)日：1992-10-13
申请号：US549890
申请日：1990-07-09
申请人： Christopher E. Cann , Bruce H. Hasegawa , Eric L. Gingold
发明人： Christopher E. Cann , Bruce H. Hasegawa , Eric L. Gingold
IPC分类号： G01T1/164 , H05G1/60
CPC分类号： A61B6/4241 , A61B6/037 , G01T1/1615 , G01T1/1642 , G01T1/1647 , G01T1/1648 , 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. Single or dual energy projector data can be simultaneously obtained with radionuclide emission data to improve localization of radionuclide uptake. Dual energy x-ray projection techniques are used to calculate the path lengths and basis material (bone, tissue, fat). The radionuclide emission data and the transmitted x-ray data are simultaneously obtained using an energy selective photon detector whereby problems of misregistration are overcome. The dual-energy x-ray projection data are utilized to determine material-specific properties and are recombined into an effectively monoenergetic image, eliminating inaccuracies in material property estimation due to beam hardening. Use of a single instrument for simultaneous data collection also reduces technician time and floor space in a hospital.
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透射数据来改善放射性核素发射成像。可以使用放射性核素发射数据同时获得单或双能量投影仪数据，以改善放射性核素摄取的定位。双能X射线投影技术用于计算路径长度和基础材料（骨骼，组织，脂肪）。使用能量选择性光子检测器同时获得放射性核素发射数据和透射的X射线数据，从而克服了重合失调的问题。双能x射线投影数据用于确定材料特性，并重新组合成有效的单能量图像，消除了由于光束硬化引起的材料性能估计的不准确性。使用单个仪器同时进行数据采集也可减少医院的技术人员时间和占地面积。

99. 发明授权

US4881171A Scintillation camera having simplified electronic control 失效
标题翻译：闪电相机具有简化的电子控制
公开(公告)号：US4881171A
公开(公告)日：1989-11-14
申请号：US71222
申请日：1987-07-08
申请人： Michel R. Jatteau , Pierre H. Lelong , Vincent Pauzat , Christian Plard
发明人： Michel R. Jatteau , Pierre H. Lelong , Vincent Pauzat , Christian Plard
IPC分类号： A61B6/03 , G01T1/164 , G01T1/17
CPC分类号： G01T1/1642 , G01T1/17
摘要： A scintillation camera, comprises the structure of a scintillation crystal (10), a collimator (20), a light guide (30), an array (50) of p photodetectors, p acquisition channels (60), and a processor (100) for supplying the coordinates x.sub.j and y.sub.j of a scintillation j and its associated energy E.sub.j, and further comprises structure characterized in that:(A) the p acquisition channels apply p digital signals to the input of the processor;(B) the processor (100) itself comprises:(a) a bus for transferring the p digital signals;(b) a digital summing stage (200);(c) a scintillation processing stage; and(C) a detection, sequencing and storage stage (400) which receives a signal which corresponds to the sum of the p output signals of the photodetectors, is provided in order to supply the various clock signals and the correction coefficients for the scintillation processing stage.
摘要翻译：闪烁照相机包括闪烁晶体（10），准直器（20），光导（30），p光电检测器阵列（50），p采集通道（60）和处理器（100）的结构，用于提供闪烁j的坐标xj和yj及其相关联的能量Ej，并且还包括以下结构，其特征在于：（A）p采集通道将p个数字信号施加到处理器的输入; （B）处理器（100）本身包括：（a）用于传送p个数字信号的总线; （b）数字求和阶段（200）; （c）闪烁处理阶段; 并且（C）提供接收与光电检测器的p个输出信号的和相对应的信号的检测，排序和存储级（400），以提供各种时钟信号和用于闪烁处理的校正系数阶段。

100. 发明授权

US4823017A Scintillation camera and multifocal fan-beam collimator used therein 失效
标题翻译：其中使用闪烁照相机和多焦点扇形光束准直仪
公开(公告)号：US4823017A
公开(公告)日：1989-04-18
申请号：US944700
申请日：1986-12-19
申请人： Jiang Hsieh
发明人： Jiang Hsieh
IPC分类号： G01T1/161 , A61B6/03 , G01T1/164 , G03B15/00 , G21K1/02
CPC分类号： G01T1/1642 , G21K1/025 , A61B6/037
摘要： A fan-beam collimator has a plurality of focal lengths. The shortest focal length is located at the center of the collimator. The longest focal length is located at the periphery of the collimator. The focal length increases between the minimum focal length and the maximum focal length.
摘要翻译：扇形光束准直仪具有多个焦距。最短焦距位于准直仪的中心。最长的焦距位于准直仪的外围。焦距在最小焦距和最大焦距之间增加。

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