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

A method of performing radiographic imaging comprising:

• generating an output signal according to an irradiated amount of irradiated radiation using a sensor portion;
• a detector to detect based on the output signal, a radiation irradiation start of radiation irradiated from a radiation source during capture of a radiographic image;
• generating noise data with a noise data generator that, based on an output signal from the sensor portion in a non-irradiation state of radiation from the radiation source, generates noise data relating to noise incorporated in the output signal;
• using a controller to control detection sensitivity to radiation irradiation start in the detector according to a degree of variation in noise level expressed by the noise data;
• and,
• capturing the radiographic image with an imaging unit after radiation irradiation start has been detected by the detector, wherein:
• the detector includes a charge amplifier that includes a capacitor that accumulates charge output as the output signal from the sensor portion, and that generates an electric signal according to a charge amount accumulated in the capacitor;
• and,
• the controller makes a charge accumulation duration of the capacitor longer the greater the noise level variation expressed by the noise data.

A method of performing radiographic imaging comprising:

• generating an output signal according to an irradiated amount of irradiated radiation using a sensor portion;
• using a detector to detect, based on the output signal, a radiation irradiation start of radiation irradiated from a radiation source during capture of a radiographic image;
• generating noise data with a noise data generator that, based on an output signal from the sensor portion in a non-irradiation state of radiation from the radiation source, generates noise data relating to noise incorporated in the output signal;
• using a controller to control detection sensitivity to radiation irradiation start in the detector according to a degree of variation in noise level expressed by the noise data;
• and,
• capturing the radiographic image with an imaging unit after radiation irradiation start has been detected by the detector, wherein:
• the noise data generator generates a histogram based on the plurality of sampling values.