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1. 发明授权

US4823016A Scintillation detector for three-dimensionally measuring the gamma-ray absorption position and a positron CT apparatus utilizing the scintillation detector 失效
标题翻译：用于三维测量伽马射线吸收位置的闪烁检测器和利用闪烁检测器的正电子CT装置
公开(公告)号：US4823016A
公开(公告)日：1989-04-18
申请号：US096459
申请日：1987-09-15
申请人： Takaji Yamashita , Hiroshi Uchida , Keiji Shimizu , Tomohide Omura
发明人： Takaji Yamashita , Hiroshi Uchida , Keiji Shimizu , Tomohide Omura
IPC分类号： A61B6/03 , G01T1/161 , G01T1/20 , G01T1/29 , G01T1/164
CPC分类号： G01T1/2985 , G01T1/2002 , G01T1/2018 , A61B6/037
摘要： A scintillation detector for three-dimensionally measuring the absorption position of the gamma-rays entering the detector and a positron computed tomography apparatus employing as a gamma-rays detector plural scintillation detectors arranged in the form of a ring are provided which can prevent the degradation of the spatial resolution in the peripheral region of the visual field and uniformly detect a positron distribution over the entire visual field with high resolution. The scintillation detector comprises a bundle of pillar-shaped scintillator elements and position detecting photodetectors coupled to the end surfaces of each scintillator element, and the apparatus comprises a plurality of scintillation detectors formed in a ring, each of which includes a bundle of scintillator elements, and plural position detecting photodetectors each of which is connected to both ends of the scintillator bundle.
摘要翻译：一种用于三维测量进入检测器的伽马射线的吸收位置的闪烁检测器和使用伽马射线检测器的正电子计算机断层摄影装置，提供以环形形式布置的多个闪烁检测器，其可以防止在视野的周边区域中的空间分辨率，并且以高分辨率均匀地检测整个视野上的正电子分布。闪烁检测器包括一束柱形闪烁器元件和耦合到每个闪烁体元件的端面的位置检测光电检测器，并且该装置包括形成在环中的多个闪烁检测器，每个闪烁体检测器包括一束闪烁体元件，以及多个位置检测用光电检测器，其各自连接到闪烁体束的两端。

2. 发明授权

US07091490B2 Depth of interaction detector with uniform pulse-height 有权
标题翻译：具有均匀脉冲高度的相互作用检测器的深度
公开(公告)号：US07091490B2
公开(公告)日：2006-08-15
申请号：US10684413
申请日：2003-10-15
申请人： Keiji Sumiya , Hiroyuki Ishibashi , Hideo Murayama , Naoko Inadama , Takaji Yamashita , Tomohide Omura
发明人： Keiji Sumiya , Hiroyuki Ishibashi , Hideo Murayama , Naoko Inadama , Takaji Yamashita , Tomohide Omura
IPC分类号： G01T1/20
CPC分类号： G01T1/2928 , G01T1/2018
摘要： A depth of interaction detector with uniform pulse-height comprises a multi-layer scintillator obtained by coupling at least two scintillator cells on a plane and then stacking the planar coupled scintillator cells, in layers, up to at least two stages and a light-receiving element connected to the bottom face of each scintillator cell of this multi-layer scintillator, wherein the detector is provided with a means for discriminating the position of a scintillator cell, which receives radiant rays and emits light rays and a means for making, uniform, the quantity of the light emitted from each scintillator cell and received by the light-receiving element. The detector can provide precise detection information even when radiation is absorbed by and emitted from a scintillator layer positioned above the scintillator layer optically coupled to the light-receiving element, permits the production of a depth of interaction detector having a three-dimensional depth of interaction-detecting function and can provide the same total output signal, which is independent of the position or a specific scintillator cell practically emitting light if the radiation energy is identical.
摘要翻译：具有均匀脉冲高度的相互作用检测器的深度包括通过在平面上耦合至少两个闪烁体单元然后层叠平面耦合的闪烁体单元达到至少两个阶段而获得的多层闪烁体，以及光接收连接到该多层闪烁体的每个闪烁体单元的底面的元件，其中检测器设置有用于识别接收辐射线并发射光线的闪烁体单元的位置的装置，以及用于使均匀的，从每个闪烁体单元发射并由光接收元件接收的光的量。即使当辐射被位于与光接收元件光耦合的闪烁体层上方的闪烁器层吸收和发射时，检测器也可以提供精确的检测信息，允许产生具有三维相互作用深度的相互作用检测器的深度 - 检测功能并且可以提供与位置无关的相同的总输出信号，或者如果辐射能量相同则实际发射光的特定闪烁体单元。

3. 发明申请

US20050087693A1 Depth of interaction detector with uniform pulse-height 有权
标题翻译：具有均匀脉冲高度的相互作用检测器的深度
公开(公告)号：US20050087693A1
公开(公告)日：2005-04-28
申请号：US10684413
申请日：2003-10-15
申请人： Keiji Sumiya , Hiroyuki Ishibashi , Hideo Murayama , Naoko Inadama , Takaji Yamashita , Tomohide Omura
发明人： Keiji Sumiya , Hiroyuki Ishibashi , Hideo Murayama , Naoko Inadama , Takaji Yamashita , Tomohide Omura
IPC分类号： G01T1/20 , C09K11/00 , C09K11/79 , G01T1/29 , H01L31/09
CPC分类号： G01T1/2928 , G01T1/2018
摘要： A depth of interaction detector with uniform pulse-height comprises a multi-layer scintillator obtained by coupling at least two scintillator cells on a plane and then stacking the planar coupled scintillator cells, in layers, up to at least two stages and a light-receiving element connected to the bottom face of each scintillator cell of this multi-layer scintillator, wherein the detector is provided with a means for discriminating the position of a scintillator cell, which receives radiant rays and emits light rays and a means for making, uniform, the quantity of the light emitted from each scintillator cell and received by the light-receiving element. The detector can provide precise detection information even when radiation is absorbed by and emitted from a scintillator layer positioned above the scintillator layer optically coupled to the light-receiving element, permits the production of a depth of interaction detector having a three-dimensional depth of interaction-detecting function and can provide the same total output signal, which is independent of the position or a specific scintillator cell practically emitting light if the radiation energy is identical.
摘要翻译：具有均匀脉冲高度的相互作用检测器的深度包括通过在平面上耦合至少两个闪烁体单元然后层叠平面耦合的闪烁体单元至多至少两个阶段而得到的多层闪烁器，以及光接收连接到该多层闪烁器的每个闪烁体单元的底面的元件，其中检测器设置有用于识别接收辐射线并发射光线的闪烁体单元的位置的装置，以及用于使均匀的，从每个闪烁体单元发射并由光接收元件接收的光的量。即使当辐射被位于与光接收元件光耦合的闪烁体层上方的闪烁器层吸收和发射时，检测器也可以提供精确的检测信息，允许产生具有三维相互作用深度的相互作用检测器的深度 - 检测功能并且可以提供与位置无关的相同的总输出信号，或者如果辐射能量相同则实际发射光的特定闪烁体单元。

4. 发明授权

US5862061A Scintillation camera using a photomultiplier having a plurality of anodes 失效
标题翻译：使用具有多个阳极的光电倍增管的闪烁照相机
公开(公告)号：US5862061A
公开(公告)日：1999-01-19
申请号：US427594
申请日：1995-04-24
申请人： Takaji Yamashita , Tomohide Omura
发明人： Takaji Yamashita , Tomohide Omura
IPC分类号： G01T1/164 , G01T1/20 , G01T1/208 , G01B11/00
CPC分类号： G01T1/208
摘要： A high resolution scintillation camera includes a scintillator which generates scintillation light having a light amount proportional to the energy value of incident radiation at the radiation incident position. The generated scintillation light is supplied to several of a plurality of photodetectors forming a detector array. These photodetectors output electrical signals proportional to the supplied light amounts, respectively. The output electrical signals are supplied to a selector to select a photodetector arranged at the radiation incident position and a plurality of photodetectors adjacent to this photodetector. A detection unit detects the radiation incident position on the scintillator on the basis of output signals from a plurality of segments of each photodetector selected by the selector.
摘要翻译：高分辨率闪烁照相机包括闪烁体，该闪烁体产生具有与辐射入射位置处的入射辐射的能量值成比例的光量的闪烁光。产生的闪烁光被提供到形成检测器阵列的多个光电检测器中的几个。这些光电检测器分别输出与所提供的光量成比例的电信号。输出电信号被提供给选择器以选择布置在辐射入射位置处的光电检测器和与该光电检测器相邻的多个光电检测器。检测单元基于由选择器选择的每个光电检测器的多个段的输出信号来检测闪烁体上的辐射入射位置。

5. 发明授权

US4870280A Radiation detector 失效
标题翻译：辐射检测器
公开(公告)号：US4870280A
公开(公告)日：1989-09-26
申请号：US130897
申请日：1987-12-10
申请人： Takaji Yamashita , Hiroshi Uchida , Tomohide Omura
发明人： Takaji Yamashita , Hiroshi Uchida , Tomohide Omura
IPC分类号： G01T1/20 , G01T1/202
CPC分类号： G01T1/2002 , G01T1/202
摘要： A radiation detector for detecting the axial position of radiation incident to a scintillation element. Roughened surface portions are selectively configured and interstitially positioned relative to mirror-polished surface portions at discrete intervals along the axis of the element for optimizing the position resolution by varying the light reflection characteristics of the element.
摘要翻译：一种用于检测入射到闪烁元件的辐射的轴向位置的辐射检测器。粗化表面部分相对于镜面抛光的表面部分被选择性地配置和间隔地沿着元件的轴线以离散的间隔定位，以通过改变元件的光反射特性来优化位置分辨率。

6. 发明授权

US06858849B2 PET apparatus 有权
标题翻译： PET装置
公开(公告)号：US06858849B2
公开(公告)日：2005-02-22
申请号：US10276975
申请日：2001-05-22
申请人： Takaji Yamashita , Hiroyuki Okada
发明人： Takaji Yamashita , Hiroyuki Okada
IPC分类号： G01T1/29 , G01T1/164
CPC分类号： G01T1/2985 , A61B6/037
摘要： A PET apparatus (1) includes a detecting section (10). Each cylindrical detector (13n) of the detecting section (10) has a plurality of block detectors (141 to 14M) arranged on the same circumference on a place perpendicular to a central axis (CAX) in the form of a ring. Each block detector (14m) is a two-dimensional position detector which detects the two-dimensional incident position of a photon incident on a light-receiving surface 15b. Each slice collimator (21n) extends to a rear portion of a corresponding one of cylindrical detectors (13n) through the space between adjacent cylindrical detectors (13n) and (13n+1) and is integrally fixed by a holding plate (22) at the rear portion.
摘要翻译： PET装置（1）包括检测部（10）。检测部分（10）的每个圆柱形检测器（13n）具有多个块状检测器（141至14M），其布置在垂直于环形中心轴线（CAX）的位置的相同圆周上。每个块检测器（14m）是检测入射在受光面15b上的光子的二维入射位置的二维位置检测器。每个切片准直器（21n）通过相邻圆柱形检测器（13n）和（13n + 1）之间的空间延伸到相应的一个圆柱形检测器（13n）的后部，并通过保持板（22）在后部。

7. 发明授权

US5424546A Scintillation counter having two scintillation fibers provided in series and which emit at different wavelengths 失效
标题翻译：闪烁计数器具有串联提供并以不同波长发射的两个闪烁光纤
公开(公告)号：US5424546A
公开(公告)日：1995-06-13
申请号：US184198
申请日：1994-01-18
申请人： Hiroyuki Okada , Takaji Yamashita
发明人： Hiroyuki Okada , Takaji Yamashita
IPC分类号： G01T1/00 , G01T1/20 , G01T5/08 , G01T1/203
CPC分类号： G01T1/201 , G01T1/2008
摘要： It is an objective of the present invention to provide a scintillation counter that can measure the intensity of only .beta. rays. Two scintillation fibers (11 and 12) which emit different wavelengths are provided in series to a probe (10). One of the scintillation fibers (12) is covered with a .beta.-ray shield. The optical signal generated at the probe (10) is transmitted through the optical fiber (20) and separated by the light separating element (31). One portion of the separated optical signal is incident on a light detector (32) and the intensity of the incident light detected. The other portion of the separated optical signal is incident on a light detector (33) and the intensity of the incident light detected.
摘要翻译：本发明的目的是提供一种只能测量β射线强度的闪烁计数器。发射不同波长的两个闪烁纤维（11和12）与探针（10）串联提供。其中一个闪烁纤维（12）被β射线屏蔽覆盖。在探针（10）处产生的光信号通过光纤（20）传输并被光分离元件（31）分离。分离的光信号的一部分入射到光检测器（32）上并检测入射光的强度。分离的光信号的另一部分入射到光检测器（33）上并检测入射光的强度。

8. 发明授权

US4929835A Position-sensitive radiation detector 失效
标题翻译：位置敏感型辐射探测器
公开(公告)号：US4929835A
公开(公告)日：1990-05-29
申请号：US850775
申请日：1986-04-11
申请人： Takaji Yamashita , Hiroshi Uchida
发明人： Takaji Yamashita , Hiroshi Uchida
IPC分类号： G01T1/164
CPC分类号： G01T1/1644
摘要： A position-sensitive radiation detector includes an array of scintillator elements having roughly-polished radiation incident ends, mirror-polished sides, and mirror-polished light output ends. The elements are separated by a media having a lower index of refraction and at least the incident ends are coated with a reflection material. A photocathode opposite to the light output ends outputs photoelectrons at locations corresponding to the scintillator elements receiving incident radiation. An incident electron detecting unit and an arithmetic unit generate data representing the position and intensity of radiation incident upon the scintillator elements.
摘要翻译：位置敏感辐射检测器包括具有大致抛光的辐射入射端，镜面抛光侧和镜面抛光光输出端的闪烁体元件阵列。元件由具有较低折射率的介质分开，并且至少入射端涂覆有反射材料。与光输出端相反的光电阴极在与接收入射辐射的闪烁体元件相对应的位置处输出光电子。入射电子检测单元和运算单元产生表示入射到闪烁体元件上的辐射的位置和强度的数据。

9. 发明授权

US06674083B2 Positron emission tomography apparatus 有权
标题翻译：正电子发射断层摄影装置
公开(公告)号：US06674083B2
公开(公告)日：2004-01-06
申请号：US09873352
申请日：2001-06-05
申请人： Eiichi Tanaka , Takaji Yamashita , Hiroyuki Okada
发明人： Eiichi Tanaka , Takaji Yamashita , Hiroyuki Okada
IPC分类号： G01T1164
CPC分类号： G21K1/04
摘要： A PET apparatus includes a detecting unit; slice septa for transmitting therethrough flying photons nearly perpendicular to the center axis; a slice septa position determining section for determining whether or not the slice septa exist in the measurement space side of at least one of the pair of photon detectors; a two-dimensional projection image storage section for storing coincidence-counting information of the photon pair obtained by the pair of photon detectors; a three-dimensional projection data storage section for storing coincidence counting information obtained by the pair of photon detectors; and an image reconstructing section for reconstruction an image indicative of a spatial distribution of a frequency at which photon pairs are emitted in the measurement space.
摘要翻译： PET装置包括检测单元; 切片隔片，用于透射几乎垂直于中心轴线的飞行光子; 切片隔片位置确定部，用于确定在所述一对光子检测器中的至少一个的所述测量空间侧是否存在所述切片隔片; 二维投影图像存储部，用于存储由该对光子检测器获得的光子对的重合计数信息; 三维投影数据存储部，用于存储由该对光子检测器获得的符合计数信息; 以及图像重建部分，用于重建指示在测量空间中发射光子对的频率的空间分布的图像。

10. 发明授权

US5003474A Method and apparatus for performing address transformation of projection data for use in positron computed tomography system 失效
标题翻译：用于在正电子计算机断层摄影系统中使用的投影数据的地址变换的方法和装置
公开(公告)号：US5003474A
公开(公告)日：1991-03-26
申请号：US341172
申请日：1989-04-21
申请人： Takaji Yamashita , Keiji Shimizu
发明人： Takaji Yamashita , Keiji Shimizu
IPC分类号： G01T1/161 , G01T1/172 , G01T1/29
CPC分类号： G01T1/2985
摘要： A method and an apparatus for performing address transformation of projection data for use in a positron CT system, where plural detectors are classified into plural detector groups. In this system, a polar coordinate of the addresses assigned to paired detectors which detect coincident events of gamma-ray emission is determined by adding a first encoded signal representing a first polar coordinate of the line joining the reference points of the paired detector groups including the paired detectors and a second encoded signal representing a second polar coordinate of the deviation of the line joining the two detectors from the line joining the reference points. The second encoded signal is obtained on the basis of address signals representing the addresses of the two detectors and a third encoded signal representing the angle relationship of the paired detector groups which is preliminarily stored in a memory. The polar coordinate thus obtained is outputted as a fourth encoded signal and used in a image reconstruction process of the positron CT system.
摘要翻译：一种在正电子CT系统中进行投影数据的地址变换的方法和装置，其中多个检测器分为多个检测器组。在该系统中，通过添加表示连接成对的检测器组的参考点的线的第一极坐标的第一编码信号来确定分配给检测器的伽马射线发射的重合事件的配对检测器的地址的极坐标，包括配对检测器和第二编码信号，其表示将两个检测器与连接参考点的线的接合线的偏差的第二极坐标。第二编码信号基于表示两个检测器的地址的地址信号和表示预先存储在存储器中的成对检测器组的角度关系的第三编码信号获得。由此得到的极坐标作为第四编码信号输出，用于正电子CT系统的图像重构处理。

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