PROBLEM TO BE SOLVED: To provide a radioimaging apparatus with good usability which can obtain high image quality and enables both imaging when mounting imaging in a condition of being mounted on a C arm and imaging when not mounting in a condition of being detached from the C arm.SOLUTION: The radioimaging apparatus has a planar face detector and a holding section holding the planar face detector and a radiation ray source, the planar face detector has a structure attachable to and detachable from the holding section. The radioimaging apparatus is capable of both imaging when mounting imaging when mounting the planar face detector on the holding section and imaging when not mounting imaging when detaching the planar face detector from the planar face detector and has a control section controlling the planar face detector such that the heat generating quantity of the planar face detector in the imaging when not mounting becomes smaller than the heat generating quantity of the planar face detector in the imaging when mounting.COPYRIGHT: (C)2008,JPO&INPIT
