公开(公告)号：US20110215254A1

公开(公告)日：2011-09-08

申请号：US13107282

申请日：2011-05-13

申请人： Isao Takahashi ,  Takafumi Ishitsu ,  Yuichiro Ueno ,  Tomoyuki Seino

发明人： Isao Takahashi ,  Takafumi Ishitsu ,  Yuichiro Ueno ,  Tomoyuki Seino

IPC分类号： G01T1/00

CPC分类号： G01T1/249 ,  G01T1/2018

摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.

摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。

公开(公告)号：US07964849B2

公开(公告)日：2011-06-21

申请号：US12837877

申请日：2010-07-16

申请人： Isao Takahashi ,  Takafumi Ishitsu ,  Yuichiro Ueno ,  Tomoyuki Seino

发明人： Isao Takahashi ,  Takafumi Ishitsu ,  Yuichiro Ueno ,  Tomoyuki Seino

IPC分类号： G01T1/161

CPC分类号： G01T1/249 ,  G01T1/2018

摘要： A PET apparatus comprises a plurality of detector units in the circumferential direction, wherein the detector unit includes a plurality of unit substrates therein, and wherein the unit substrate includes: a plurality of detectors upon which a γ-ray is incident; and an analog ASIC and digital ASIC for processing a γ-ray detection signal outputted by each of the detectors. The analog ASIC includes two slow systems having mutually different time constants, each of which outputs a pulseheight value. A noise determination part of the digital ASIC determines whether a relevant detection signal is an intended γ-ray detection signal or a noise based on a correlation between the pulseheight values, and a noise counting part counts the number of times of noise determination, and a detector output signal processing control part controls the signal processing with respect to an output signal from a relevant detector based on the count.

摘要翻译： PET装置包括沿圆周方向的多个检测器单元，其中所述检测器单元包括多个单元基板，并且其中所述单元基板包括：多个检测器，其上存在γ射线; 以及用于处理由每个检测器输出的γ射线检测信号的模拟ASIC和数字ASIC。 模拟ASIC包括具有相互不同的时间常数的两个慢速系统，每个时间常数输出脉冲高度值。 数字ASIC的噪声确定部分基于脉冲高度值之间的相关性来确定相关检测信号是否是期望的γ射线检测信号或噪声，并且噪声计数部分对噪声确定的次数进行计数，并且 检测器输出信号处理控制部分基于计数来控制来自相关检测器的输出信号的信号处理。

公开(公告)号：US07952076B2

公开(公告)日：2011-05-31

申请号：US12424104

申请日：2009-04-15

申请人： Katsutoshi Tsuchiya ,  Tsuneaki Kawaguchi ,  Yuichi Morimoto ,  Masatoshi Tanaka ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Takafumi Ishitsu ,  Naoki Kubo ,  Nagara Tamaki

发明人： Katsutoshi Tsuchiya ,  Tsuneaki Kawaguchi ,  Yuichi Morimoto ,  Masatoshi Tanaka ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Takafumi Ishitsu ,  Naoki Kubo ,  Nagara Tamaki

IPC分类号： G01T1/161

CPC分类号： G01T1/2928

摘要： A radiation imaging system is configured by a collimator 30A including a detector 21 with a discrete detection pixel corresponding with a pixel and a plurality of radiation passages 31 and looks into a plurality of detectors 21 through one radiation passage 31 to set a step width of rotation around a rotation center axis X1 only for an angle θp made by lines provided by connecting a center detector 21 of the radiation passage 31 and the adjacent two detectors 21. In the case of generating a flat plane projection image for one direction, radio-graphing is carried out on a projection image in a plurality of predetermined angle positions (−θp, 0, +θp) in the circumferential direction of the rotation center axis X1 and thereby one plane projection image is obtained.

摘要翻译： 辐射成像系统由包括具有与像素对应的离散检测像素和多个辐射通道31的检测器21的准直仪30A配置，并且通过一个辐射通道31查看多个检测器21，以设置旋转的台阶宽度 围绕旋转中心轴线X1旋转，仅通过将辐射通道31的中心检测器21与相邻的两个检测器21连接而提供的角度＆amp; p所构成。在生成一个方向的平面投影图像的情况下， 在旋转中心轴X1的圆周方向上的多个预定角度位置（ - ＆amp; t; p，0，+＆amp; t; p）中的投影图像上进行一次平面投影图像的拍摄。

公开(公告)号：US20090166541A1

公开(公告)日：2009-07-02

申请号：US12342805

申请日：2008-12-23

申请人： Katsutoshi Tsuchiya ,  Takafumi Ishitsu ,  Tsuneaki Kawaguchi

发明人： Katsutoshi Tsuchiya ,  Takafumi Ishitsu ,  Tsuneaki Kawaguchi

IPC分类号： G01T1/166 ,  A61B6/00

CPC分类号： G01T1/1648 ,  A61B6/037

摘要： A radiation imaging system includes a detecting unit including a plurality of radiation detecting elements arranged in a plane for radiation detection, a collimator provided with through holes respectively aligned with the radiation detecting elements and opening in an entrance surface such that radiation from a specified direction is selectively made to fall on the radiation detecting elements. A second case joined to a first case fixed to the side surface of the collimator defines a holding chamber G, and a holder holding the detecting unit is placed in the holding chamber G such that spaces that allow the holder to be moved in a plane parallel to the entrance surface are formed between the holder and the second case. A position adjusting mechanism for adjusting the positional relation between the second case and the holder by moving the holder relative to the second case

摘要翻译： 放射线成像系统包括：检测单元，包括布置在用于放射线检测的平面中的多个辐射检测元件;准直器，其设置有分别与辐射检测元件对准的通孔和在入口表面上的开口，使得来自指定方向的辐射为 选择性地落在辐射检测元件上。 固定在准直仪的侧面的第一壳体的第二壳体形成保持室G，将保持检测单元的保持架放置在保持室G中，使得保持架能够平行于平面移动的空间 在保持器和第二壳体之间形成到入口表面。 一种位置调节机构，用于通过相对于第二壳体移动保持器来调节第二壳体和保持器之间的位置关系

公开(公告)号：US07442937B2

公开(公告)日：2008-10-28

申请号：US11822031

申请日：2007-06-29

申请人： Katsutoshi Tsuchiya ,  Hiroshi Kitaguchi ,  Yuichi Morimoto ,  Shinya Kominami ,  Kazuma Yokoi ,  Tsuneaki Kawaguchi ,  Masatoshi Tanaka ,  Takafumi Ishitsu

发明人： Katsutoshi Tsuchiya ,  Hiroshi Kitaguchi ,  Yuichi Morimoto ,  Shinya Kominami ,  Kazuma Yokoi ,  Tsuneaki Kawaguchi ,  Masatoshi Tanaka ,  Takafumi Ishitsu

IPC分类号： G21K1/02

CPC分类号： G01T1/1648 ,  A61B6/037

摘要： Disclosed herein is a radiation imaging apparatus and radiation-imaging-apparatus-based nuclear medicine diagnosis apparatus having a collimator in which a plurality of rectangular through-holes are arranged in a grid pattern and separated by septa is rotated through a predetermined angle as viewed from above in relation to the layout of a plurality of rectangular detectors that are arranged in a grid pattern. The predetermined angle ranges from 20 to 70 degree and more preferably from 30 deg to 60 deg. With this configuration, the influence of sensitivity variations (moire patterns) that are included in an image picked up due to interference with a collimator when pixel type detectors are used is eliminated.

摘要翻译： 本发明公开了一种辐射成像装置和基于放射成像装置的核医学诊断装置，其具有准直仪，其中多个矩形通孔以网格图案排列并且由隔片隔开，从而从其观察时旋转预定角度 相对于以网格图案排列的多个矩形检测器的布局。 预定角度为20至70度，更优选为30度至60度。 利用这种配置，消除了当使用像素型检测器时由于与准直器的干涉而拾取的图像中包括的灵敏度变化（莫尔图案）的影响。

公开(公告)号：US09057789B2

公开(公告)日：2015-06-16

申请号：US13818000

申请日：2011-08-04

申请人： Tomoyuki Seino ,  Yuichiro Ueno ,  Takafumi Ishitsu

发明人： Tomoyuki Seino ,  Yuichiro Ueno ,  Takafumi Ishitsu

IPC分类号： G01T1/17

CPC分类号： G01T1/17 ,  G01T1/171

摘要： A radiation measuring device includes: a detector that detects radiation; a preamplifier that amplifies a signal outputted from the detector; a shaping amplifier that shapes the waveform of the signal outputted from the preamplifier; an A/D converter that converts the analog signal output from the shaping amplifier to a digital signal; and a digital data processing unit that calculates digital signal output from the A/D converter, wherein energy information of the radiation inputted to the detector is obtained from a pulse height of the pulse signal processed by the preamplifier and the shaping amplifier, and the pulse height of the current pulse is corrected in the digital data processing unit by performing an arithmetic operation using the pulse height information of the current pulse digitalized by the A/D converter, the generation time information of the preceding pulse, and the pulse height information of the preceding pulse.

摘要翻译： 辐射测量装置包括：检测器，其检测辐射; 放大从检测器输出的信号的前置放大器; 整形放大器，其对从前置放大器输出的信号的波形进行整形; A / D转换器，其将从整形放大器输出的模拟信号转换为数字信号; 以及数字数据处理单元，其计算从A / D转换器输出的数字信号，其中，从由前置放大器和整形放大器处理的脉冲信号的脉冲高度获得输入到检测器的辐射的能量信息，并且脉冲 通过使用由A / D转换器数字化的当前脉冲的脉冲高度信息，前一脉冲的生成时间信息和脉冲高度信息进行算术运算，在数字数据处理单元中校正电流脉冲的高度 前面的脉冲。

公开(公告)号：US20110297837A1

公开(公告)日：2011-12-08

申请号：US13201914

申请日：2010-02-17

申请人： Takafumi Ishitsu ,  Isao Takahashi ,  Katsutoshi Tsuchiya ,  Kazuma Yokoi ,  Yuichiro Ueno

发明人： Takafumi Ishitsu ,  Isao Takahashi ,  Katsutoshi Tsuchiya ,  Kazuma Yokoi ,  Yuichiro Ueno

IPC分类号： G01T1/24 ,  H01L27/146

CPC分类号： H01L27/14658

摘要： The radiation detection module (20) is provided with a semiconductor element (1) having a plurality of pixels (Pn), radiation detection elements (30) in which a plurality of first electrodes (31n) are arranged along one side of the semiconductor element (1), and a second electrode (32m) is disposed astride a plurality of pixels (Pn) along the other side, and which output detection signals when a radioactive ray comes incident on the detection pixels (Pn), and a support PCB (21) placed to stand along the direction in which the radioactive ray comes incident. The support PCB (21) has a connection section (21a) detachably connectable to an external connecting section. Radiation detection elements (30) are connected on the support PCB (21) to fabricate a signal read-out circuit having mutually-perpendicular wiring in a pseudo way and that the incident position of the radioactive ray is identified by coincidence determination of the detection signals.

摘要翻译： 放射线检测模块（20）设置有具有多个像素（Pn）的半导体元件（1），放射线检测元件（30），多个第一电极（31n）沿半导体元件 （1），并且第二电极（32m）沿着另一侧跨越多个像素（Pn）设置，并且当放射线入射到检测像素（Pn）上时输出检测信号和支撑PCB（ 21）沿着放射线入射的方向放置。 支撑PCB（21）具有可拆卸地连接到外部连接部分的连接部分（21a）。 辐射检测元件（30）连接在支撑PCB（21）上，以伪造的方式制造具有相互垂直布线的信号读出电路，并且通过检测信号的一致确定来识别放射线的入射位置 。

公开(公告)号：US07888648B2

公开(公告)日：2011-02-15

申请号：US12388263

申请日：2009-02-18

申请人： Tomoyuki Seino ,  Takafumi Ishitsu ,  Yuichiro Ueno

发明人： Tomoyuki Seino ,  Takafumi Ishitsu ,  Yuichiro Ueno

IPC分类号： G01T1/24

CPC分类号： G01T1/24

摘要： A radiological measurement system protecting an amplifier from damage caused by a surge current, ensuring temporal continuity of measurement with a minimum dead time, and including a high voltage DC supply for applying a bias voltage to a radiation detector formed of semiconductor crystal, a controller for exercising on-off control on the bias voltage supplied from the high voltage DC supply, an amplifier, a protection circuit for protecting the amplifier from a surge current generated when the bias voltage is subjected to the on-off control, a control unit for preventing the surge current from flowing to the amplifier, and a switch provided in parallel with the protection circuit and controlled in operation state by the control unit, wherein the control unit controls the operation state of the switch in synchronism with the on-off control exercised by the control unit to prevent the surge current from flowing to the amplifier.

摘要翻译： 一种放射学测量系统，其保护放大器不受浪涌电流造成的损害，确保具有最小死区时间的测量的时间连续性，并且包括用于向由半导体晶体形成的辐射检测器施加偏置电压的高压DC电源，控制器 对从高压DC电源提供的偏置电压进行开关控制，放大器，用于保护放大器免受当偏置电压进行开关控制时产生的浪涌电流的保护电路，用于防止 流入放大器的浪涌电流以及与保护电路并联设置并由控制单元控制在操作状态的开关，其中控制单元与开关控制单元的开 - 关控制同步地控制开关的运行状态 该控制单元防止浪涌电流流向放大器。

公开(公告)号：US20090242780A1

公开(公告)日：2009-10-01

申请号：US12388263

申请日：2009-02-18

申请人： Tomoyuki SEINO ,  Takafumi Ishitsu ,  Yuichiro Ueno

发明人： Tomoyuki SEINO ,  Takafumi Ishitsu ,  Yuichiro Ueno

IPC分类号： G01T1/24

CPC分类号： G01T1/24

摘要： A radiological measurement system protecting an amplifier from damage caused by a surge current, ensuring temporal continuity of measurement with a minimum dead time, and including a high voltage DC supply for applying a bias voltage to a radiation detector formed of semiconductor crystal, a controller for exercising on-off control on the bias voltage supplied from the high voltage DC supply, an amplifier, a protection circuit for protecting the amplifier from a surge current generated when the bias voltage is subjected to the on-off control, a control unit for preventing the surge current from flowing to the amplifier, and a switch provided in parallel with the protection circuit and controlled in operation state by the control unit, wherein the control unit controls the operation state of the switch in synchronism with the on-off control exercised by the control unit to prevent the surge current from flowing to the amplifier.

摘要翻译： 一种放射学测量系统，其保护放大器不受浪涌电流造成的损害，确保具有最小死区时间的测量的时间连续性，并且包括用于向由半导体晶体形成的辐射检测器施加偏置电压的高压DC电源，控制器 对从高压DC电源提供的偏置电压进行开关控制，放大器，用于保护放大器免受当偏置电压进行开关控制时产生的浪涌电流的保护电路，用于防止 流入放大器的浪涌电流以及与保护电路并联设置并由控制单元控制在操作状态的开关，其中控制单元与开关控制单元的开 - 关控制同步地控制开关的运行状态 该控制单元防止浪涌电流流向放大器。

公开(公告)号：US07535008B2

公开(公告)日：2009-05-19

申请号：US11836448

申请日：2007-08-09

申请人： Katsutoshi Tsuchiya ,  Tsuneaki Kawaguchi ,  Yuichi Morimoto ,  Masatoshi Tanaka ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Takafumi Ishitsu ,  Naoki Kubo ,  Nagara Tamaki

发明人： Katsutoshi Tsuchiya ,  Tsuneaki Kawaguchi ,  Yuichi Morimoto ,  Masatoshi Tanaka ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Takafumi Ishitsu ,  Naoki Kubo ,  Nagara Tamaki

IPC分类号： G01T1/166

CPC分类号： G01T1/2928

摘要： A radiation imaging system is configured by a collimator 30A including a detector 21 with a discrete detection pixel corresponding with a pixel and a plurality of radiation passages 31 and looks into a plurality of detectors 21 through one radiation passage 31 to set a step width of rotation around a rotation center axis X1 only for an angle θp made by lines provided by connecting a center detector 21 of the radiation passage 31 and the adjacent two detectors 21. In the case of generating a flat plane projection image for one direction, radio-graphing is carried out on a projection image in a plurality of predetermined angle positions (−θp, 0, +θp) in the circumferential direction of the rotation center axis X1 and thereby one plane projection image is obtained.

摘要翻译： 辐射成像系统由包括具有与像素对应的离散检测像素和多个辐射通道31的检测器21的准直仪30A配置，并且通过一个辐射通道31查看多个检测器21，以设置旋转的台阶宽度 围绕旋转中心轴线X1，仅对于通过连接辐射通道31的中心检测器21和相邻的两个检测器21而提供的线所形成的角度。在生成一个方向的平面投影图像的情况下，无线电绘图 在旋转中心轴X1的圆周方向上的多个预定角度位置（-thetap，0，+ thetap）中的投影图像上进行，从而获得一个平面投影图像。