NUCLEAR MEDICINE DIAGNOSIS DEVICE

PROBLEM TO BE SOLVED: To provide a nuclear medicine diagnosis device which detects a malfunctioning radiation detector while imaging, and eliminates adverse effects on an generated image caused due to a noise signal from the radiation detector.SOLUTION: A PET device includes multiple detection units in a circumferential direction each of which includes multiple unit substrates, and each of the multiple unit substrates includes multiple detectors which γ rays enter, and an analogue ASIC 24 and a digital ASIC 26 which process γ ray detection signals respectively generated by each of the detectors. The analogue ASIC 24 has two slow systems with different time constants, which respectively outputs a peak value VE1 and VE2. The digital ASIC 26 includes: a noise detection unit 36e which detects whether a signal is an intrinsic γ ray detection signal or a noise based on correlation between the peak values VE1 and VE2; a noise counting unit 36f counts the number of noise detection; and a detector output signal processing restriction unit 36g which restricts signal processing for signals outputted by specific detectors according to the counted number of noise detection.