1. A radiographic image capture system comprising: a portable radiographic image capture device comprising a sensor section that is sensitive to radiation or to light converted from radiation, an electronic circuit that controls capture of a radiographic image by the sensor section, and a casing that houses the sensor section and the electronic circuit and is provided with a flow port for flowing a cooling medium through from outside to inside; and an image capture table comprising a housing section that houses the portable radiographic image capture device, and an inflow mechanism that flows the cooling medium into the flow port of the portable radiographic image capture device when housed in the housing section at least during the capture of the radiographic image.