Patent ID: 8872118
Filing Date: 2014-10-28
Classification: H04N

Abstract:
1. A radiographic image detecting apparatus comprising: a plurality of photoelectric conversion elements for generating electric charge by emission of radiation; a bias line through which a bias voltage is supplied to the photoelectric conversion elements; a power supply for applying the bias voltage to the photoelectric conversion elements through the bias line; a current detector for detecting a bias current flowing through the bias line based on a voltage drop across a resistor inserted in the bias line; a first amplifying circuit having a gain, wherein in a case where an electric signal due to the electric charge is read out from the photoelectric conversion elements through a signal line, the gain at a time of reading out the electric signal is set based on a current value detected by the current detector at a time of emission of the radiation; a second amplifying circuit connected to an output of the first amplifying circuit; and a controller for correcting the electric signal by increasing a gain of the second amplifying circuit depending on decrease in a sensitivity of the photoelectric conversion element due to the voltage drop.