The radiation detection module (20) is provided with a semiconductor element (1) having a plurality of pixels (Pn), radiation detection elements (30) in which a plurality of first electrodes (31n) are arranged along one side of the semiconductor element (1), and a second electrode (32m) is disposed astride a plurality of pixels (Pn) along the other side, and which output detection signals when a radioactive ray comes incident on the detection pixels (Pn), and a support PCB (21) placed to stand along the direction in which the radioactive ray comes incident. The support PCB (21) has a connection section (21a) detachably connectable to an external connecting section. Radiation detection elements (30) are connected on the support PCB (21) to fabricate a signal read-out circuit having mutually-perpendicular wiring in a pseudo way and that the incident position of the radioactive ray is identified by coincidence determination of the detection signals.
