A radiation detection module for a CT device that detects radiation includes a detecting section configured to detect radiation, a processing section configured to process a signal from the detecting section, and a heat radiating member thermally coupled to the processing section and configured to dissipate heat generated by the processing section. The heat radiating member has a plurality of fins. The plurality of fins is spaced apart from each other in a first direction along a slice direction of the CT device. Each of the plurality of fins has a plate shape extending so as to intersect the first direction.
