Radiation inspection apparatus e.g. positron computerized tomography apparatus, measures time at which peak values of detection signal is equivalent to two threshold values, based on which incidence time of signal is calculated

摘要

A semiconductor detection unit (11) detects gamma ray discharged from positron nuclear species in target object (S) of patient, and measures time at which peak values of detection signal is equivalent to two different threshold values. The incidence time of the detection signal is calculated by primary regression based on the measured times, and detection data is output to an information processing unit (14) which regenerates image data based on the detection data. An independent claim is also included for radiation detection circuit.