DETECTOR FOR GAMMA RAYS
    4.
    发明公开
    DETECTOR FOR GAMMA RAYS 失效
    伽马射线探测器

    公开(公告)号:EP0966692A4

    公开(公告)日:2000-07-12

    申请号:EP98911598

    申请日:1998-03-13

    发明人: BRYMAN DOUGLAS

    IPC分类号: G01T1/20 G01T1/185

    CPC分类号: G01T1/185

    摘要: A gamma ray detector for determining the position of gamma ray interactions has at least one module (1). Each module has a converter (2) for converting gamma rays (3) to charged particles (4), a scintillator (5) for emitting light in response to charged particles produced by the converter, a photodectector (6) to determine when light has been emitted from the scintillator, a two-coordinate position detector (7) for determining the X and Y coordinates of charged particles interacting with the position detector, and a signal device (8) for signaling the presence of emitted light in the photodetector and for activating the position detector.

    SEGMENTED SCINTILLATION DETECTOR FOR PHOTON INTERACTION COORDINATES
    5.
    发明公开
    SEGMENTED SCINTILLATION DETECTOR FOR PHOTON INTERACTION COORDINATES 失效
    下SPLIT闪烁用于确定光子相互作用的坐标

    公开(公告)号:EP0958508A4

    公开(公告)日:2000-05-10

    申请号:EP98909989

    申请日:1998-02-05

    IPC分类号: G01T1/20 G01T1/202

    CPC分类号: G01T1/2002 G01T1/202

    摘要: The present invention relates to light guides (1) capable of encoding the transverse and longitudinal coordinates of light emission induced by the interaction of photons in an array of a plurality of the light guides. Each light guide has at least two discrete crystal segments (4) adjacently disposed along a common longitudinal axis of the light guide (1). Between adjacent segments is a boundary layer (7) having less light transmission than the light transmission of the crystal segments (4). A light absorbing mask (8) increases light adsorption in a segment (4). Photons enter the light guide (1) and cause the emission of scintillation light which is delivered in different and resolvable quantities to light sensing devices. The differences in quantity of delivered light is caused by successive decreases in light transmission to light transmitting end (5) caused at least in part by the boundary layers (7). The differences in quantity of light establish the segment from which the light emission took place.