Patent ID: 9282943
Filing Date: 2016-03-15
CPC Classification: A61B,G01T,H01L,H04N,H05G

Claim Text:
1. 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 controls 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 controller lowers detection sensitivity to radiation irradiation start in the detector the greater the variation in the noise level expressed by the noise data; the detector includes an amplifier circuit that amplifies the output signal; and, the controller lowers detection sensitivity to radiation irradiation start by the detector by reducing the gain of the amplification circuit the greater the variation in the noise level expressed by the noise data.