Patent ID: 7202482

Claim:
A radiation detection apparatus comprising: a detector unit having a plurality of semiconductor radiation detection elements each having a semiconductor area that interacts with radiation to generate charges and an anode and a cathode constructed opposite each other and across the semiconductor area, and a detector holding member in which these semiconductor radiation detection elements are installed in a matrix including a plurality of rows in a direction a and a plurality of rows in another direction b crossing the direction a; and a detector unit holding member in which a plurality of the detector units are installed, wherein the detector holding member is provided with a plurality of anode signal lines arranged for every plural rows in the direction a and connected to the respective anodes of a plurality of the semiconductor radiation detection elements belonging to the corresponding rows in the direction a and a plurality of cathode signal lines arranged for every plural rows in the direction b and connected to the respective cathodes of a plurality of the semiconductor radiation detection elements belonging to the corresponding rows in the direction a, the detector holding member is provided with a first connector portion to which the plurality of anode signal lines and the plurality of cathode signal lines are separately connected, the detector unit holding member is provided with a second connector portion releasably connected to the first connector portion, and the radiation detection apparatus further comprises a positioning device that positions a coupling member that releasably attaches the detector holding member to the detector unit holding member, in a part of the detector holding member in which the first connector portion is not located, and in a part of the detector unit holding member in which the second connector portion is not located.