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    • 1. 发明授权
    • Detector assembly for multi-modality scanners
    • 用于多模式扫描仪的检测器组件
    • US06448559B1
    • 2002-09-10
    • US09434480
    • 1999-11-05
    • Abdelhamid SaoudiRoger Lecomte
    • Abdelhamid SaoudiRoger Lecomte
    • G01T120
    • G01T1/1615A61B6/037G01T1/1603G01T1/1644G01T1/202G01T1/2985
    • A detector assembly for multi-modality PET/SPEC/CT scanners comprises a first layer for detecting low energy gamma radiation and X-rays and a second layer for detecting high energy gamma radiation. The first layer is generally transparent to high energy gamma radiation. The second layer may advantageously provide measurement of depth of interaction of the high energy radiation. The first layer is preferably in the form of a thin CsI(TI) scintillator, while the second layer includes a pair of LSO/GSO scintillators. The detector assembly includes a photodetector, preferably in the form avalanche photodiode to transform the light signals from the scintillators into electric signals. The detector assembly is advantageously incorporated in a multi-modality PET/SPECT/CT scanner allowing simultaneous transmission and emission imaging with the same detection geometry.
    • 用于多模式PET / SPEC / CT扫描仪的检测器组件包括用于检测低能伽马辐射和X射线的第一层和用于检测高能γ辐射的第二层。 第一层对高能γ辐射通常是透明的。 第二层可以有利地提供高能量辐射的相互作用深度的测量。 第一层优选是薄的CsI(TI)闪烁体的形式,而第二层包括一对LSO / GSO闪烁体。 检测器组件包括光电检测器,优选地形式为雪崩光电二极管,以将来自闪烁体的光信号转换成电信号。 检测器组件有利地结合在多模态PET / SPECT / CT扫描器中,允许具有相同检测几何形状的同时传输和发射成像。