Radiation detector, radiation detector element, and radiation imaging apparatus

摘要

In a gamma camera (10a,10b,10c,10d), a plurality of radiation detector elements (71a) having a rod-shaped first electrode (72a), a semiconductor device (74) surrounds the first electrode; and a second electrode (73a) is detachably attached to a holding member (42a,42d,42f). A collimator (41a,41d,41e) in which a plurality of radiation paths (19) provided corresponding to the plurality of radiation detector elements are formed is arranged on the radiation entering side of the plurality of radiation detector elements. A γ-ray detection signal outputted from the first electrode contact portion is sent to a signal processing integrated circuit (45a). A high voltage is applied to the second electrode via the second electrode contact portion.