Patent ID: 7791030

Claim:
A nuclear medical diagnostic device, comprising: a plurality of γ-ray detectors, wherein each of the γ-ray detectors is composed of a scintillator block, a light receiving element, and an A/D converter, the scintillator block is formed by optically combining a plurality of scintillator arrays with luminescence pulses in a γ-ray incident depth direction having different attenuation times, the light receiving element converts the luminescence pulse emitted from the scintillator block to an electric signal, and the A/D converter converts the electric signals output from the light receiving element, which are analog signals, to digital signals; a processing circuit for the device, for calculating a signal count ratio according to the digital signals from the γ-ray detectors; a frame, for installing the plurality of γ-ray detectors; a parameter deciding mechanism for identification, calculating a first signal count ratio according to the digital signals obtained by irradiating the γ-ray on each of the plurality of the scintillator arrays and obtaining a second signal count ratio by irradiating the γ-ray on the scintillator block and performing a measurement when the plurality of γ-ray detectors are not respectively installed in the frame but are connected to a processing circuit for inspection that is different from the processing circuit for the device, and obtaining a third signal count ratio by irradiating the γ-ray on the respective scintillator block of the γ-ray detectors and performing a measurement when the plurality of γ-ray detectors are respectively installed in the frame and are connected to the processing circuit for the device, and determining parameters for identification according to the first signal count ratio, the second signal count ratio, and the third signal count ratio; and an identification mechanism, for identifying which one of the plurality of the scintillator arrays of the plurality of γ-ray detectors is irradiated by the γ-ray of a measurement object according to the parameters for identification.