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11. 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。

12. 发明授权

US4831263A 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：US4831263A
公开(公告)日：1989-05-16
申请号：US169025
申请日：1988-03-16
申请人： Takaji Yamashita
发明人： Takaji Yamashita
IPC分类号： G01T1/161 , G01T1/164 , G01T1/20 , G01T1/202
CPC分类号： G01T1/2002 , G01T1/1644 , G01T1/202
摘要： A position-sensitive radiation detector has a plate-like scintillator and a photomultiplier tube array that are connected each other. At least one of scintillator surfaces of a radiation incidence-side and a connection-side to the photomuliplier tube array is provided with plural grooves. This structure enables the detection of the depth of a scintillation point in the scintillator and the detection of the scintillation point in horizontal direction with high resolution.
摘要翻译：位置敏感的放射线检测器具有彼此连接的板状闪烁体和光电倍增管阵列。辐射入射侧的闪烁体表面和光致变色管阵列的连接侧中的至少一个设置有多个凹槽。该结构能够检测闪烁体中的闪烁点的深度和以高分辨率检测水平方向的闪烁点。

13. 发明申请

US20110121192A1 SCINTILLATOR, METHOD FOR MANUFACTURING SCINTILLATOR, AND RADIATION DETECTOR 有权
标题翻译：扫描仪，制造扫描仪的方法和放射检测器
公开(公告)号：US20110121192A1
公开(公告)日：2011-05-26
申请号：US12991013
申请日：2009-03-13
申请人： Takahiro Moriya , Takaji Yamashita , Makoto Kakegawa
发明人： Takahiro Moriya , Takaji Yamashita , Makoto Kakegawa
IPC分类号： G01T1/202 , H01L31/18 , G21K4/00
CPC分类号： G01T1/202 , G21K4/00
摘要： A radiation detector is provided with a scintillator 2A containing a plurality of modified regions 21 and a plurality of photodetectors or a position-sensitive photodetector optically coupled to a surface of the scintillator 2A. The plurality of modified regions 21 are formed by irradiating an inside of a crystalline lump which will act as the scintillator 2A with a laser beam and three-dimensionally dotted and have a refractive index different from a refractive index of a surrounding region within the inside of the scintillator 2A.
摘要翻译：放射线检测器设置有包含多个修改区域21和多个光电检测器的闪烁器2A，或者与闪烁体2A的表面光耦合的位置敏感光电检测器。多个改质区域21是通过用激光束照射作为闪烁器2A的结晶块的内部形成的，并且三维点划线，并且折射率不同于内侧的周围区域的折射率闪烁体2A。

14. 发明授权

US07039227B2 PET device and image generating method for pet device 失效
标题翻译：宠物装置的PET装置和图像生成方法
公开(公告)号：US07039227B2
公开(公告)日：2006-05-02
申请号：US10276221
申请日：2001-05-23
申请人： Eiichi Tanaka , Takaji Yamashita
发明人： Eiichi Tanaka , Takaji Yamashita
IPC分类号： G06K9/00 , G01T1/164
CPC分类号： G01T1/2985 , A61B6/037
摘要： A PET apparatus is provided, which ensures excellent quantitativeness by properly correcting the influence of scattered radiation while improving the resolution of a reconstructed image and keeping good photon pair detection sensitivity. A determining section 52 determines whether a straight line connecting the light-receiving surfaces 15b of a pair of photon detectors 15a which have simultaneously detected a photon pair crosses any one of slice collimators 21n. When it is determined that the straight line crosses none of the slice collimators 21n, the corresponding coincidence counting information is accumulated by a first coincidence counting information storage section 53 to generate a signal sinogram. When it is determined that the straight line crosses one of the slice collimators 21n, the corresponding coincidence counting information is accumulated by a second coincidence counting information storage section 54 to generate a scatter sinogram. An image reconstructing section 60 corrects the influence of scattered components on the signal sinogram on the basis of the scattered sinogram, and reconstructs an image on the basis of the corrected signal sinogram.
摘要翻译：提供了一种PET装置，其通过适当地校正散射辐射的影响，同时提高重建图像的分辨率并保持良好的光子对检测灵敏度来确保优异的定量性。确定部分52确定连接同时检测到光子对的一对光子检测器15a的光接收表面15b的直线是否与切片准直器21中的任何一个相交。当确定直线与片准直器21不相交时，相应的重合计数信息由第一重合计数信息存储部分53积累以产生信号正弦图。当确定直线与片准直器21之一相交时，相应的重合计数信息由第二重合计数信息存储部分54积累以产生散射正弦图。图像重建部分60基于分散正弦图校正散射分量对信号正弦图的影响，并且基于校正的信号正弦图重建图像。

15. 发明授权

US5090415A Examination apparatus 失效
标题翻译：检查仪器
公开(公告)号：US5090415A
公开(公告)日：1992-02-25
申请号：US639377
申请日：1991-01-11
申请人： Takaji Yamashita , Yutaka Yamashita
发明人： Takaji Yamashita , Yutaka Yamashita
IPC分类号： A61B5/00 , G01N21/47
CPC分类号： A61B5/6814 , A61B5/14553 , G01N21/4795 , G01N2021/178 , G01N2021/1791 , G01N2021/4709 , G01N2201/08
摘要： An examination apparatus for examining with transmission photometry an object of interest. The apparatus comprises: light launching means for successively launching an incidence light beam to the object at an incidence site; and light pickup means for picking up, in synchronism with launching of the incidence light beam, light beams scattered in the object from a plurality of output sites as light intensity data, and performing mathematical processing on the light intensity data for every launching of said incidence light beam to obtain absorption data representing a light absorption quantity at the incidence site.
摘要翻译：一种检测装置，用于以透射测光法检查感兴趣的对象。该装置包括：发光装置，用于在入射部位连续发射入射光束到物体; 以及光拾取装置，用于与入射光束的发射同步地拾取从多个输出位置散射在物体中的光束作为光强度数据，并且对于每次发射所述入射的光强度数据执行数学处理以获得表示入射部位的光吸收量的吸收数据。

16. 发明授权

US08809794B2 Radiation detector 有权
标题翻译：辐射检测器
公开(公告)号：US08809794B2
公开(公告)日：2014-08-19
申请号：US13983167
申请日：2012-01-13
申请人： Hiroshi Uchida , Takaji Yamashita
发明人： Hiroshi Uchida , Takaji Yamashita
IPC分类号： G01T1/20
CPC分类号： G01T1/2006 , G01T1/202
摘要： A radiation detector comprises a scintillator 2A having a first end face 11, a second end face 13 disposed on a side opposite from the first end face 11, and a plurality of light-scattering surfaces 21 formed with an interval therebetween along a first direction P from the first end face 11 side to the second end face 13 side; a first photodetector 12 optically coupled to the first end face 11; and a second photodetector 14 optically coupled to the second end face 13. The light-scattering surfaces 21 are formed so as to intersect the first direction P. The light-scattering surfaces 21 include modified regions 21R formed by irradiating the inside of the scintillator 2A with laser light.
摘要翻译：辐射检测器包括闪烁器2A，其具有第一端面11，设置在与第一端面11相对的一侧的第二端面13和沿着第一方向P形成有间隔的多个光散射面21 从第一端面11侧到第二端面13侧; 光学耦合到第一端面11的第一光电检测器12; 以及与第二端面13光学耦合的第二光电检测器14.光散射表面21形成为与第一方向P相交。光散射表面21包括通过照射闪烁体2A的内部而形成的改质区域21R 用激光。

17. 发明授权

US08779371B2 Scintillator, method for manufacturing scintillator, and radiation detector 有权
标题翻译：闪烁体，制造闪烁体的方法和辐射探测器
公开(公告)号：US08779371B2
公开(公告)日：2014-07-15
申请号：US12991013
申请日：2009-03-13
申请人： Takahiro Moriya , Takaji Yamashita , Makoto Kakegawa
发明人： Takahiro Moriya , Takaji Yamashita , Makoto Kakegawa
IPC分类号： G01T1/202 , H01L21/00
CPC分类号： G01T1/202 , G21K4/00
摘要： A radiation detector is provided with a scintillator 2A containing a plurality of modified regions 21 and a plurality of photodetectors or a position-sensitive photodetector optically coupled to a surface of the scintillator 2A. The plurality of modified regions 21 are formed by irradiating an inside of a crystalline lump which will act as the scintillator 2A with a laser beam and three-dimensionally dotted and have a refractive index different from a refractive index of a surrounding region within the inside of the scintillator 2A.
摘要翻译：放射线检测器设置有包含多个修改区域21和多个光电检测器的闪烁器2A，或者与闪烁体2A的表面光耦合的位置敏感光电检测器。多个改质区域21是通过用激光束照射作为闪烁器2A的结晶块的内部形成的，并且三维点划线，并且折射率不同于内侧的周围区域的折射率闪烁体2A。

18. 发明授权

US06774370B1 Positron imaging device 有权
标题翻译：正电子成像装置
公开(公告)号：US06774370B1
公开(公告)日：2004-08-10
申请号：US10129733
申请日：2002-05-10
申请人： Hiroshi Uchida , Takaji Yamashita
发明人： Hiroshi Uchida , Takaji Yamashita
IPC分类号： G01T1164
CPC分类号： G01T1/2985
摘要： A first detector group 1 and a second detector group 2, disposed opposite to each other and detecting gamma ray pairs resulting from electron-positron pair annihilation, are each constituted by two two-dimensional radiation detectors 101, and 102, 201, and 202, and arranged so that a prescribed arrangement spacing L2 is established between the scintillator arrays 11 and 21. Furthermore, the coincidence counting circuit 50 of the signal processing circuit 5 is constituted so as to carry out coincidence counting for diagonally disposed detectors as well as oppositely disposed detectors. Accordingly, the are a between the ranges of the fields of view resulting from opposite detectors is supplemented by a range of the field of view resulting from diagonally disposed detectors. Consequently, it becomes possible to attain a positron imaging device wherein the range of the field of view is efficiently expanded, and the simplification and cost reduction of the device are realized.
摘要翻译：由彼此相对设置并且检测由电子 - 正电子对湮灭产生的伽马射线对的第一检测器组1和第二检测器组2分别由两个二维辐射检测器101,102,201和202组成，并且布置成使得在闪烁体阵列11和21之间建立规定的布置间隔L2。此外，信号处理电路5的重合计数电路50被构造成对于对角布置的检测器进行重合计数，并且相对布置探测器因此，由相对的检测器产生的视场的范围之间由对角设置的检测器产生的视场范围补充。因此，可以获得能够有效地扩展视场范围的正电子成像装置，从而实现装置的简化和降低成本。

19. 发明申请

US20130299710A1 RADIATION DETECTOR 有权
标题翻译：辐射探测器
公开(公告)号：US20130299710A1
公开(公告)日：2013-11-14
申请号：US13983167
申请日：2012-01-13
申请人： Hiroshi Uchida , Takaji Yamashita
发明人： Hiroshi Uchida , Takaji Yamashita
IPC分类号： G01T1/20
CPC分类号： G01T1/2006 , G01T1/202
摘要： A radiation detector comprises a scintillator 2A having a first end face 11, a second end face 13 disposed on a side opposite from the first end face 11, and a plurality of light-scattering surfaces 21 formed with an interval therebetween along a first direction P from the first end face 11 side to the second end face 13 side; a first photodetector 12 optically coupled to the first end face 11; and a second photodetector 14 optically coupled to the second end face 13. The light-scattering surfaces 21 are formed so as to intersect the first direction P. The light-scattering surfaces 21 include modified regions 21R formed by irradiating the inside of the scintillator 2A with laser light.
摘要翻译：辐射检测器包括闪烁器2A，其具有第一端面11，设置在与第一端面11相对的一侧的第二端面13和沿着第一方向P形成有间隔的多个光散射面21 从第一端面11侧到第二端面13侧; 光学耦合到第一端面11的第一光电检测器12; 以及与第二端面13光学耦合的第二光电检测器14.光散射表面21形成为与第一方向P相交。光散射表面21包括通过照射闪烁体2A的内部而形成的改质区域21R 用激光。

20. 发明授权

US07038210B2 Pet device 失效
标题翻译：宠物装置
公开(公告)号：US07038210B2
公开(公告)日：2006-05-02
申请号：US10362940
申请日：2001-08-29
申请人： Eiichi Tanaka , Takaji Yamashita , Hiroyuki Okada
发明人： Eiichi Tanaka , Takaji Yamashita , Hiroyuki Okada
IPC分类号： G01T1/164
CPC分类号： G21K1/025
摘要： A rotating ceptor 20 provided inside a detector portion 10 includes nine shield plates S1 to S9 disposed in parallel to each other in between adjacent detector rings R, acts as a collimator, and allows only those photon pairs that have traveled approximately parallel to a slice plane to be made incident upon photon detectors D located behind the rotating ceptor 20. Each of the shield plates S is not formed annularly, and provided near the measurement field of view 1 of part of N photon detectors D that constitute each of the detector rings R. The rotating ceptor 20 is rotatable about its center axis. Each of the shield plates S is provided with bar-shaped radiation source insertion holes 20a and 20b for allowing a bar-shaped positron emission radiation source 3 to be inserted therein and supported thereby.
摘要翻译：设置在检测器部分10内部的旋转受检者20包括在相邻检测器环R之间彼此平行设置的九个屏蔽板S 1至S 9，用作准直器并且仅允许已经行进的大致平行于切片平面的那些光子对入射到位于旋转的切割器20后面的光子检测器D上。每个屏蔽板S不是环形地形成，并且设置在构成每个检测环R的N个光子检测器D的一部分的测量视场1附近。旋转的摄影器20可以围绕其中心轴线旋转。每个屏蔽板S设置有用于允许棒状正电子发射辐射源3插入其中并由其支撑的条形辐射源插入孔20a和20b。

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