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    • 2. 发明授权
    • Position-sensitive radiation detector
    • 位置敏感型辐射探测器
    • US4929835A
    • 1990-05-29
    • US850775
    • 1986-04-11
    • Takaji YamashitaHiroshi Uchida
    • Takaji YamashitaHiroshi Uchida
    • G01T1/164
    • G01T1/1644
    • 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.
    • 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。
    • 3. 发明授权
    • Radiation detector
    • 辐射检测器
    • US08809794B2
    • 2014-08-19
    • US13983167
    • 2012-01-13
    • Hiroshi UchidaTakaji Yamashita
    • Hiroshi UchidaTakaji Yamashita
    • G01T1/20
    • G01T1/2006G01T1/202
    • 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.
    • 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。
    • 4. 发明授权
    • Positron imaging device
    • 正电子成像装置
    • US06774370B1
    • 2004-08-10
    • US10129733
    • 2002-05-10
    • Hiroshi UchidaTakaji Yamashita
    • Hiroshi UchidaTakaji Yamashita
    • G01T1164
    • G01T1/2985
    • 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.
    • 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。
    • 5. 发明申请
    • RADIATION DETECTOR
    • 辐射探测器
    • US20130299710A1
    • 2013-11-14
    • US13983167
    • 2012-01-13
    • Hiroshi UchidaTakaji Yamashita
    • Hiroshi UchidaTakaji Yamashita
    • G01T1/20
    • G01T1/2006G01T1/202
    • 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.
    • 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。
    • 6. 发明授权
    • Position-sensitive radiation detector
    • 位置敏感型辐射探测器
    • US4945241A
    • 1990-07-31
    • US320255
    • 1989-03-07
    • Takaji YamashitaHiroshi Uchida
    • Takaji YamashitaHiroshi Uchida
    • G01T1/20G01T1/164G01T1/202
    • G01T1/202G01T1/1644
    • A position-sensitive radiation detector has a multi-layer scintillator assembly coupled to a position-sensitive photo-detector. Individual scintillator blocks of rectangular solid form in each scintillator layer are optically isolated by a reflecting agent such as BaSO.sub.4, and the adjacent layers are optically coupled by a coupling agent such as silicon grease. In the case of the scintillator assembly of n layers, the scintillator blocks in one layer are staggered with those in the adjacent layer by one nth of the width of each block. In addition to information on a horizontal position, information on the depth of radiation absorption can be obtained by calculating the centroid or variance of a spatial distribution of light outputted from the scintillator assembly.
    • 位置敏感辐射探测器具有耦合到位置敏感光电检测器的多层闪烁体组件。 每个闪烁体层中的矩形固体形式的单个闪烁体块通过诸如BaSO 4的反射剂进行光学隔离,并且相邻的层通过偶联剂如硅油光学耦合。 在n层的闪烁体组装的情况下,一层中的闪烁体块与相邻层中的闪烁体块与每个块的宽度的十分之一交错。 除了关于水平位置的信息之外,还可以通过计算从闪烁体组件输出的光的空间分布的质心或方差来获得关于辐射吸收深度的信息。
    • 8. 发明授权
    • Radiation detector
    • 辐射检测器
    • US09535169B2
    • 2017-01-03
    • US13977840
    • 2011-11-25
    • Hiroshi Uchida
    • Hiroshi Uchida
    • G01T1/20G01T1/164G01T1/29
    • G01T1/2006G01T1/1644G01T1/2985
    • Provided is a radiation detector that prevents a decline in detection efficiency as well as having excellent temporal characteristics. The radiation detector 1, which detects a radiation, includes a scintillator array 10 having a plurality of scintillator cells 11, a photodetector array 20 having a plurality of photodetectors 21, and a photodetector array 30 having a plurality of photodetectors 31. The plurality of photodetectors 21 and the plurality of photodetectors 31 are solid-state photodetectors that can transmit a gamma ray G1, G2. The scintillator cell 11 is separated into a plurality of light emitting regions 11a, 11b by a reflecting region 12, and the reflecting region 12 extends between the incident surface 10a side and the back surface 10b side along a surface SP that is inclined with respect to the incident surface 10a and the back surface 10b.
    • 提供了防止检测效率下降以及具有优异的时间特性的辐射检测器。 检测辐射的辐射检测器1包括具有多个闪烁体单元11的闪烁体阵列10,具有多个光电检测器21的光电检测器阵列20和具有多个光电检测器31的光电检测器阵列30.多个光电检测器 21,多个光检测器31是能够透射伽马射线G1,G2的固体光电检测器。 闪烁体单元11通过反射区域12分离成多个发光区域11a,11b,反射区域12沿着相对于第二区域的倾斜的表面SP在入射面10a侧和背面10b侧之间延伸 入射面10a和背面10b。