Radiation imaging apparatus and control method

摘要

A radiation imaging apparatus connected to a radiation generation apparatus which generates radiation and a sensor which accumulates a charge corresponding to an irradiating dose on a detection surface acquires a radiation image by driving the sensor upon generation of radiation by the radiation generation apparatus and acquires a dark image by driving the sensor without generation of radiation by the radiation generation apparatus. The radiation imaging apparatus adjusts a driving timing of the sensor so as to set a time difference between two starts of reading charge from the sensor to acquire the radiation image and reading charge from the sensor to obtain the dark image to an integer multiple of a predetermined time.

主权项

1. A control apparatus for controlling a radiation imaging by a radiation generation apparatus which generates radiation and a sensor which accumulates charge corresponding to an irradiated radiation dose, the control apparatus comprising:
a first acquisition unit configured to acquire a radiation image corresponding to radiation irradiated by the radiation generation apparatus by reading an electrical signal corresponding to the charge accumulated in the sensor; a second acquisition unit configured to acquire dark current data of the sensor by reading an electrical signal corresponding to the charge accumulated in the sensor without irradiating radiation; and an adjusting unit configured to adjust a driving timing of the sensor by one of said first acquisition unit and said second acquisition unit so as to set a time difference between two starts of reading an electrical signal from the sensor by said first acquisition unit and reading an electrical signal from the sensor by said second acquisition unit to an integer multiple of a period determined by a frequency of a commercial power source.