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    • 2. 发明申请
    • TIME-BASED DIGITIZER FOR PET PHOTODETECTOR
    • 基于时间的DIGITIZER为PET照相机
    • WO2013085923A1
    • 2013-06-13
    • PCT/US2012/067800
    • 2012-12-04
    • THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    • LAU, Frances W. Y.LEVIN, Craig StevenHOROWITZ, Mark A.CHOI, Hwang HoKIM, Jaeha
    • A61B6/12G01T1/161
    • G01T1/208A61B6/037A61B6/4208E02D29/1427G01T1/1647G01T1/2006G01T1/202G01T1/2985H03F3/08H03M1/1019H03M1/204
    • An integrated circuit in a PET imaging system with a plurality of photodetectors is provided. A plurality of differential transimpedance amplifiers with differential inputs and differential outputs is provided, wherein differential inputs for each differential transimpedance amplifier of the plurality of differential transimpedance amplifiers are electrically connected to a photodetector. A plurality of level crossing analog-to-digital converters is provided wherein differential inputs for each level crossing analog-to-digital converter of the plurality of level crossing analog-to-digital converters are electrically connected to differential outputs of a differential transimpedance amplifier, wherein each level crossing analog-to-digital converter of the plurality of level crossing analog-to-digital converters, comprises a plurality of differential comparators with differential inputs and differential threshold inputs, wherein the differential inputs are electrically connected to the output of the differential outputs of the differential transimpedance amplifier electrically connected to the level crossing analog-to-digital converter and a clock.
    • 提供了具有多个光电检测器的PET成像系统中的集成电路。 提供了具有差分输入和差分输出的多个差分跨阻放大器,其中多个差分跨阻抗放大器的每个差分跨阻放大器的差分输入电连接到光电检测器。 提供了多个电平交叉模数转换器,其中多个电平交叉模数转换器中的每个电平交叉模数转换器的差分输入电连接到差分跨阻放大器的差分输出, 其中所述多个电平交叉模数转换器中的每个电平交叉模拟 - 数字转换器包括具有差分输入和差分阈值输入的多个差分比较器,其中所述差分输入电连接到所述差分输出 电连接到电平交叉模数转换器的差分跨阻放大器的输出和时钟。