Patent ID: 8705700

Claim:
A radiation image capturing system, comprising: a radiation generation device which emits radiation; a plurality of portable radiation image capturing apparatuses, which are disposed in one image capturing room, each of the portable radiation image capturing apparatuses comprises: a plurality of scanning lines and a plurality of signal lines which are disposed so as to intersect with each other; a plurality of image capturing elements which are two dimensionally arranged in regions defined by the plurality of scanning lines and the plurality of signal lines, respectively, and which generate electric charge according to an amount of radiation which is irradiated; an electric current detection unit which detects an electric current that flow in the apparatus due to a radiation irradiation; a reading circuit having a power supply mode in which electric charge generated and accumulated in each of the image capturing elements is read and converted into an electric signal and a waiting mode in which the electric charge is not read and power consumption is smaller comparing to the power supply mode; a battery which supplies power to each unit of the apparatus; a control unit which switches the reading circuit to the power supply mode from the waiting mode when the control unit detects that the radiation irradiation is started by detecting that a current amount of the electric current which is detected by the electric current detection unit increased when the reading circuit is in the waiting mode, and the control unit switches a power consumption mode of the apparatus between a first mode in which power is not supplied to the reading circuit, a second mode in which the reading circuit is made to be in the waiting mode and a third mode in which the reading circuit is switched to the power supply mode from the waiting mode; a communication unit; and a console which is made to correspond with the image capturing room in advance and which communicates with the portable radiation image capturing apparatuses in the image capturing room, wherein the console comprises an input unit for inputting a predetermined information, the console switches a power consumption mode of all of the portable radiation image capturing apparatuses in the image capturing room to the second mode according to an input of the predetermined information by the input unit, and when the control unit of each of the portable radiation image capturing apparatuses which are switched to the second mode detects that a radiation irradiation is started, the control unit switches the power consumption mode to the third mode from the second mode, generates image data based on an electric charge which is read from the image capturing elements and transmits the generated image data to the console via the communication unit.