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1.发明授权公开(公告)号：US08933410B2
公开(公告)日：2015-01-13
申请号：US13636936
申请日：2010-03-29
申请人： Naoko Inadama , Hideo Murayama , Taiga Yamaya , Mitsuo Watanabe , Takahiro Moriya , Kenshi Fukumitsu , Tomohide Omura
发明人： Naoko Inadama , Hideo Murayama , Taiga Yamaya , Mitsuo Watanabe , Takahiro Moriya , Kenshi Fukumitsu , Tomohide Omura
CPC分类号： G01T1/1644
摘要： A three-dimensional position-sensitive radiation detector is provided which has a three-dimensional array of photodetectors disposed on the surface of a scintillator block and which is capable of three-dimensionally identifying the position of light emission at which radiation has been detected within the detector. The three-dimensional position-sensitive radiation detector includes: a scintillator block including a central portion which restricts the direction of diffusion of light so as to direct the light in three axial directions and which has an optically discontinuous region, and an outer portion which is disposed on the outside of the central portion and which does not restrict the direction of diffusion of light; and photodetectors disposed on at least two outer circumferential surfaces of the scintillator block. The detector identifies three-dimensionally the position of light emission, thereby preventing deterioration in position discrimination performance even when inner scintillator elements are smaller than the photodetectors.
摘要翻译： 提供了三维位置敏感的放射线检测器，其具有设置在闪烁体块的表面上的光电检测器的三维阵列，并且能够三维地识别已经在其内检测到辐射的发光的位置 探测器。 三维位置敏感型放射线检测器包括：闪烁体块，其包括限制光的扩散方向的中心部，以使光在三个轴向引导，并具有光学不连续区域;外部部分 设置在中心部分的外侧，并且不限制光的扩散方向; 以及设置在闪烁体块的至少两个外周表面上的光电检测器。 检测器三维地识别发光的位置，从而即使当内部闪烁体元件小于光电检测器时也防止位置判别性能的劣化。
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2.发明申请Three-dimensional radiation position detector and method of identifying sensed positions therein 有权三维辐射位置检测器和识别其中感测位置的方法公开(公告)号：US20130056638A1
公开(公告)日：2013-03-07
申请号：US13636936
申请日：2010-03-29
申请人： Naoko Inadama , Hideo Murayama , Taiga Yamaya , Mitsuo Watanabe , Takahiro Moriya , Kenshi Fukumitsu , Tomohide Omura
发明人： Naoko Inadama , Hideo Murayama , Taiga Yamaya , Mitsuo Watanabe , Takahiro Moriya , Kenshi Fukumitsu , Tomohide Omura
IPC分类号： G01T1/164
CPC分类号： G01T1/1644
摘要： A three-dimensional position-sensitive radiation detector is provided which has a three-dimensional array of photodetectors disposed on the surface of a scintillator block and which is capable of three-dimensionally identifying the position of light emission at which radiation has been detected within the detector. The three-dimensional position-sensitive radiation detector includes: a scintillator block including a central portion which restricts the direction of diffusion of light so as to direct the light in three axial directions and which has an optically discontinuous region, and an outer portion which is disposed on the outside of the central portion and which does not restrict the direction of diffusion of light; and photodetectors disposed on at least two outer circumferential surfaces of the scintillator block. The detector identifies three-dimensionally the position of light emission, thereby preventing deterioration in position discrimination performance even when inner scintillator elements are smaller than the photodetectors.
摘要翻译： 提供了三维位置敏感的放射线检测器，其具有设置在闪烁体块的表面上的光电检测器的三维阵列，并且能够三维地识别已经在其内检测到辐射的发光的位置 探测器。 三维位置敏感型放射线检测器包括：闪烁体块，其包括限制光的扩散方向的中心部，以使光在三个轴向引导，并具有光学不连续区域;外部部分 设置在中心部分的外侧，并且不限制光的扩散方向; 以及设置在闪烁体块的至少两个外周表面上的光电检测器。 检测器三维地识别发光的位置，从而即使当内部闪烁体元件小于光电检测器时也防止位置判别性能的劣化。
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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。
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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
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。
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5.发明授权Scintillation detector for three-dimensionally measuring the gamma-ray absorption position and a positron CT apparatus utilizing the scintillation detector 失效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
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。
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公开(公告)号：US06901337B2
公开(公告)日：2005-05-31
申请号：US10118331
申请日：2002-04-09
申请人： Eiichi Tanaka , Tomohide Omura
发明人： Eiichi Tanaka , Tomohide Omura
摘要： The energy E of a signal pulse P inputted to an energy measurement apparatus 1 for measurement, and corresponding to the total integrated intensity, is calculated in an energy calculation unit 10 from the integrated signal intensity Q acquired by a gate integrator 32, and from the pulse interval T measured by a pulse interval measurement unit 23. At this time, pileup correction is performed using at least one of the integrated signal intensity or the energy, and the pulse interval of the signal pulse inputted prior to the signal pulse for measurement. By this means, the correct energy E, with the effect of pileup eliminated, can be determined with good precision. Hence a method and apparatus for energy measurement are realized which enable correct and precise measurement of the energy of individual signal pulses, even when the pulse interval between signal pulses is short.
摘要翻译： 输入到用于测量的能量测量装置1并相应于总积分强度的信号脉冲P的能量E由能量计算单元10从由门积分器32获取的积分信号强度Q和 由脉冲间隔测量单元23测量的脉冲间隔T。 此时，使用集成信号强度或能量中的至少一个以及在用于测量的信号脉冲之前输入的信号脉冲的脉冲间隔来执行堆积校正。 通过这种方式，可以精确地确定消除堆积效应的正确能量E。 因此，即使当信号脉冲之间的脉冲间隔较短时，也能实现用于能量测量的方法和装置，其能够对各信号脉冲的能量进行正确和精确的测量。
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7.发明授权
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
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。
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公开(公告)号：US5091650A
公开(公告)日：1992-02-25
申请号：US624956
申请日：1990-12-10
申请人： Hiroshi Uchida , Tomohide Omura
发明人： Hiroshi Uchida , Tomohide Omura
CPC分类号： G01T1/2002 , G01T1/202
摘要： A radiation detector comprising a scintillator array for emitting scintillation light upon incidence of radiation to a scintillator and distributing the scintillation light to the other scintillators at a predetermined distribution ratio and plural photomultiplier tubes optically coupled to the scintillator array for converting the scintillation light into an amplified electrical signal representing an incident position of the radiation to the scintillator array. The scintillator array comprises plural scintillators, and each pair of neighboring scintillators have coupling surface on both of confronting surfaces thereof for optically coupling the neighboring scintillators therethrough, each of the coupling surfaces having at least one of a roughened surface and a mirror-polished surface having different transmissivities to light passing therethrough to thereby adjust the distribution ratio of the scintillation light transmitted from one of the scintillators to another.
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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
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。
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