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    • 4. 发明公开
    • POSITRON CT DEVICE AND TIMING CORRECTION METHOD
    • POSTRENEN-COMPUTERTOMOGRAF UND TAKTKORREKTURVERFAHREN
    • EP2573588A4
    • 2015-10-14
    • EP10851704
    • 2010-05-18
    • SHIMADZU CORP
    • TSUDA TOMOAKISATO MASANOBU
    • G01T1/161G01T1/172
    • A61B6/037A61B6/4266A61B6/485G01T1/1647G01T1/172G01T1/2018G01T1/208G01T1/2985
    • A PET apparatus and a timing correction method of this invention select two target gamma-ray detectors 3 which count coincidences, select a reference detector S which is one detector out of the two selected gamma-ray detectors 3, select a gamma-ray detector 3 different from the other, opposite detector O, and when repeating the selection, make a time lag histogram concerning two gamma-ray detectors 3 selected in the past a reference, and correct a time lag histogram concerning gamma-ray detectors 3 selected this time based on the reference. By repeating an operation to make the corrected time lag histogram concerning the two gamma-ray detectors 3 a new reference, an optimal time lag histogram can be obtained without repeating many measurements and computations.
    • 本发明的PET装置和定时校正方法选择两个计数重合的目标γ射线检测器3,选择作为两个所选伽马射线检测器3中的一个检测器的参考检测器S,选择伽马射线检测器3 与另一个相反的检测器O不同,并且当重复该选择时,对于在过去的参考中选择的两个伽马射线探测器3进行时间延迟直方图,并且校正关于基于此时间选择的伽马射线探测器3的时滞直方图 参考。 通过重复使关于两个伽马射线检测器3的校正时间延迟直方图的操作成为新的参考,可以在不重复许多测量和计算的情况下获得最佳时滞直方图。