Abstract: Disclosed is a radiation image imaging apparatus including: a radiation detector that detects radiation; a hardware processor that controls imaging of a radiation image by driving a readout circuit in a first power consumption mode or a second power consumption mode in which power consumption is larger than in the first power consumption mode; and a housing that houses the radiation detector and the hardware processor. The hardware processor enables imaging in the second power consumption mode in response to the radiation image imaging apparatus being in contact with a heat suppressor and prohibits the imaging in the second power consumption mode or stops driving of the readout circuit in the second power consumption mode after end of the imaging in the second power consumption mode in response to the radiation image imaging apparatus being not in contact with the heat suppressor.