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    • 17. 发明申请
    • TIMING CALIBRATION FOR A TOF-PET SCANNER
    • TOF-PET扫描仪的时序校准
    • WO2006018766A2
    • 2006-02-23
    • PCT/IB2005/052587
    • 2005-08-02
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.FIEDLER, KlausGEAGAN, MichaelMUEHLLEHNER, GerdRUETTEN, WalterTHON, Andreas
    • FIEDLER, KlausGEAGAN, MichaelMUEHLLEHNER, GerdRUETTEN, WalterTHON, Andreas
    • G01T1/40G01T1/208
    • G01T1/40A61B6/037G01T1/208
    • A time-of-flight PET nuclear imaging device (A) includes radiation detectors (20, 22, 24), electronic circuits (26, 28, 30, 32) for processing output signals from each of detectors (20), a coincidence detector (34), a time-of-flight calculator (38) and image processing circuitry (40). A calibration system (48) includes an energy source (50, 150) which generates an electrical or optical calibration pulse. The electrical calibration pulse is applied at an input to the electronics at an output of the detector and the optical calibration pulse is applied to a preselected point adjacent a face of each optical sensor (20) of the detectors. A calibration processor (52) measures the time differences between the generation of the calibration pulse and the receipt of a trigger signal from the electronic circuitry by the coincidence detector (34) and adjusts adjustable delay circuits (44, 46) to minimize these time differences.
    • 飞行时间PET核成像装置(A)包括用于处理来自每个检测器(20)的输出信号的辐射检测器(20,22,24),电子电路(26,28,30,32),重合检测器 (34),飞行时间计算器(38)和图像处理电路(40)。 校准系统(48)包括产生电或光学校准脉冲的能量源(50,150)。 电校准脉冲在检测器的输出处的电子器件的输入处施加,并且光学校准脉冲被施加到与检测器的每个光学传感器(20)的面相邻的预选点。 校准处理器(52)通过重合检测器(34)测量校准脉冲的产生和来自电子电路的触发信号的接收之间的时间差,并且调节可调延迟电路(44,46)以最小化这些时间差 。