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    • 92. 发明申请
    • 오차를 줄일 수 있는 어레이 디텍터를 이용한 신호 위치 검출 장치
    • 信号位置检测装置使用阵列检测器来减少误差
    • WO2017086741A1
    • 2017-05-26
    • PCT/KR2016/013349
    • 2016-11-18
    • 중앙대학교 산학협력단
    • 최영완전수진박창인이춘식
    • A61B6/00G01T1/29G01T1/164
    • A61B6/00G01T1/164G01T1/29
    • 오차를 줄일 수 있는 어레이 디텍터를 이용한 신호 위치 검출 장치가 제공된다. 개시된 신호 위치 검출 장치는 기생 캐패시터를 포함하는 다수의 PMT(photomultiplier) 및 다수의 저항으로 구성된 어레이 디텍터를 이용하여 신호의 위치를 검출하는 장치로서, 상기 어레이 디텍터로 들어오는 신호의 제1 좌표 상에서의 위치 및 상기 신호의 세기를 검출하는 검출부 - 상기 제1 좌표는 상기 기생 캐패시터에 의해 발생하는 위치 오류가 포함된 좌표임 -; 상기 신호의 세기를 이용하여 기 설정된 다수의 호모그래피 매트릭스 중 하나의 호모그래피 매트릭스를 결정하는 결정부; 상기 결정된 호모그래피 매트릭스를 이용하여 상기 제1 좌표 상에서의 픽셀의 경계선을 상기 제2 좌표 상에서의 픽셀의 경계선으로 변환하고, 상기 변환된 제2 좌표 상에서의 픽셀의 경계선을 이용하여 상기 제1 좌표 상에서의 위치와 대응되는 상기 신호의 상기 제2 좌표 상에서의 위치를 검출하는 산출부 - 상기 제2 좌표는 상기 위치 오류가 포함되지 않는 좌표임-;를 포함한다.
    • 提供了一种使用能够减少错误的阵列检测器来检测信号位置的设备。 一种使用包括寄生电容器的多个PMT(光电倍增器)和包括多个电阻器的阵列检测器来检测信号的位置的设备,所述设备包括: 以及检测器,用于检测信号的强度,其中第一坐标是包括由寄生电容器产生的位置误差的坐标; 确定单元,用于确定使用信号的强度预设的多个单应矩阵中的一个; 使用所确定的单应性矩阵并使用经变换的第二坐标上的像素的边界线将第一坐标上的像素的边界变换到第二坐标上的像素的边界, 其中第二坐标是不包括位置误差的坐标。
    • 94. 发明申请
    • SCINTILLATION EVENT LOCALIZATION IN A RADIATION PARTICLE DETECTOR
    • 辐射粒子检测器中的扫描事件本地化
    • WO2016146644A1
    • 2016-09-22
    • PCT/EP2016/055607
    • 2016-03-15
    • KONINKLIJKE PHILIPS N.V.
    • SCHULZ, Volkmar
    • G01T1/164
    • G01T1/1647
    • A method for scintillation event localization in a radiation particle detector comprises the steps of providing a plurality of scintillator element locations (2') configured to emit a burst of photons responsive to a radiation particle being absorbed at the scintillator element location (2') and detecting a burst of photons emitted by a scintillator element location (2') with a photosensor (5), wherein the photosensor (5) comprises an array of single photon avalanche diodes configured to break down responsive to impingement of a photon. Breakdown data (30) is acquired indicative of which of the single photon avalanche diodes are in breakdown and predetermined photosensor sensitivity data (20, 40) is provided, which assign single photon avalanche diodes to groups, wherein each group is assigned to exactly one scintillator element location (2'). Finally the number of single photon avalanche diodes in breakdown is determined for each group individually to identify the scintillator element location (2') that emitted the burst of photons.
    • 一种用于在辐射粒子检测器中闪烁事件定位的方法包括以下步骤:提供多个闪烁体元件位置(2'),所述闪烁体元件位置(2')被配置为响应于在闪烁器元件位置(2')处被吸收的辐射粒子发射一束光子, 用光电传感器(5)检测由闪烁器元件位置(2')发射的光子的突发,其中所述光电传感器(5)包括被配置为响应于光子的撞击而分解的单光子雪崩二极管的阵列。 获取指示单光子雪崩二极管中的哪一个击穿的击穿数据(30),并且提供预定的光电传感器灵敏度数据(20,40),其将单个光子雪崩二极管分配给组,其中每个组被分配给正好一个闪烁体 元素位置(2')。 最后单独确定击穿的单光子雪崩二极管的数量,以识别发射光子脉冲的闪烁体元件位置(2')。
    • 95. 发明申请
    • COMPACT TRAPEZOIDAL PET DETECTOR WITH LIGHT SHARING
    • 紧凑型TRAPEZOIDAL PET检测器与光共享
    • WO2016112135A1
    • 2016-07-14
    • PCT/US2016/012386
    • 2016-01-06
    • UNIVERSITY OF WASHINGTON
    • MIYAOKA, Robert, S.HUNTER, William, C. J.
    • G01T1/202G01T1/164A61B6/03
    • A61B6/037A61B6/4208G01T1/2018G01T1/2985
    • A positron emission tomography (PET) scanner (100) includes trapezoidal sensor modules (101) arranged adjacently to form an annular detector ring (110). The sensor modules include a plurality of scintillation crystals (103) with interleaved light reflective/blocking elements (106). At least the end-face reflective element covers only a portion of the face of the sensor module, such that light is shared between adjacent sensor modules. A photodetector (104) and optional light guide (105) are fixed to an outer face of the plurality of scintillation crystals, wherein the photodetectors are disposed at an angle with respect to adjacent sensor modules. Light sharing between neighboring modules allows the modules to be small, enabling a very compact device. Signals from the photodetectors are processed with a computer system (90) configured to identify the three-dimensional location of scintillation events occurring in the detector ring.
    • 正电子发射断层摄影(PET)扫描仪(100)包括相邻设置以形成环形探测器环(110)的梯形传感器模块(101)。 传感器模块包括具有交错光反射/阻挡元件(106)的多个闪烁晶体(103)。 至少端面反射元件仅覆盖传感器模块的表面的一部分,使得相邻传感器模块之间共享光。 光电检测器(104)和可选的光导(105)固定到多个闪烁晶体的外表面,其中光电检测器相对于相邻的传感器模块设置成一定角度。 相邻模块之间的光共享允许模块小,使得非常紧凑的设备。 用计算机系统(90)处理来自光电检测器的信号,该计算机系统(90)被配置为识别在检测器环中发生的闪烁事件的三维位置。
    • 99. 发明申请
    • SYSTEM AND METHOD FOR DETECTING GAMMA RADIATION, SUCH AS A GAMMA CAMERA
    • 用于检测伽玛辐射的系统和方法,例如伽马照相机
    • WO2014072648A9
    • 2015-07-16
    • PCT/FR2013052672
    • 2013-11-08
    • ILTIS ALAIN
    • ILTIS ALAIN
    • G01T1/164
    • G01T1/208G01T1/1647G01T1/2985G06T7/13G06T2207/10104G06T2207/10108
    • The invention relates to a system for detecting gamma radiation, such as a gamma camera, including a source of gamma rays, at least one plate P1 of a fast scintillator, the time thereof for rising to the light peak being less than 1 ns, said plate comprising a diffusing entry surface and a polished exit surface, having a thickness of no less than 10 mm, being provided with photodetectors and microelectronics for dedicated reading, characterised in that the microelectronics are of the ASIC type, in that the detector is segmented, and in that on said plate P1, each segment of said detector is capable of measuring a first trigger T1 such that a time resolution is lower than 100 ps; the detector can measure a space and time distribution of the first adjacent photons emitted by an event on the detectors for a time of more than 100 ps and no longer than the time for rising to the light peak of the scintillator. The invention further relates to the image-reconstruction method implemented in the system, as well as to the implementation and use of said system. The invention additionally relates to the image-reconstruction method and to the method for improving the energy resolution of the detector installed in the system, as well as to the implementation of said system.
    • 本发明涉及一种用于检测伽马射线的系统,例如伽马照相机,包括伽马射线源,快闪烁体的至少一个平板P1,其上升到光峰的时间小于1ns,所述 包括具有不小于10mm的厚度的漫射入射表面和抛光出射表面的板,其具有用于专用读取的光电检测器和微电子学,其特征在于,微电子学是ASIC型的,其中检测器被分段, 并且在所述板P1上,所述检测器的每个段能够测量第一触发器T1,使得时间分辨率低于100ps; 检测器可以测量由检测器上的事件发射的第一相邻光子的空间和时间分布超过100ps并且不超过上升到闪烁体的光峰的时间。 本发明还涉及在系统中实现的图像重建方法以及所述系统的实现和使用。 本发明还涉及图像重建方法和用于提高安装在系统中的检测器的能量分辨率以及所述系统的实现的方法。