Radiographic imaging device, radiographic imaging system, method of controlling radiation detection sensitivity and program storage medium

摘要

A radiographic imaging device including: a detector that detects an irradiation start of radiation irradiated in imaging of a radiographic image; a derivation unit that derives an irradiation amount of radiation that will be irradiated within a specific period of time based on input data; a controller that makes a power supply amount to the detector smaller and lowers detection sensitivity to radiation irradiation start in the detector the larger the radiation irradiation amount derived by the derivation unit; and an imaging unit that images the radiographic image after radiation irradiation start has been detected by the detector.

主权项

1. A radiographic imaging device comprising:
a detector that detects an irradiation start of radiation irradiated during imaging of a radiographic image; a derivation unit that derives an irradiation amount of radiation that will be irradiated within a specific period of time based on input data; a controller that causes a power supply amount to the detector to become smaller and detection sensitivity to irradiation start in the detector, to become lower as the radiation irradiation amount derived by the derivation unit increases, wherein the controller is different from the detector; and an imaging unit that images the radiographic image after radiation irradiation start has been detected by the detector, wherein: the detector includes a plurality of sensor portions that each generate charge according to an irradiation amount of the radiation, and a signal processing section that generates an electrical signal according to amounts of charge generated in the plurality of sensor portions; the controller causes a number of the sensor portions that are active, out of the plurality of sensor portions, to decrease and causes the power supply amount to the detector to decrease, as the radiation irradiation amount derived by the derivation unit increase; and wherein: the signal processing section includes a plurality of operation amplification circuits respectively provided to correspond to each of the plurality of sensor portions; and the controller causes a drive number of the operation amplification circuits to decrease, as the radiation irradiation amount derived by the derivation unit increases.