RADIATION IMAGING APPARATUS AND CONTROL METHOD OF THE SAME

摘要

A radiation imaging apparatus, comprising a sensor array, a readout unit, for reading out image data from the sensor array, which includes a first mode of reading out image data in a first period and a second mode of reading out image data in a second period shorter than the first period, a holding unit and a controlling unit, wherein, after irradiation to the sensor array is complete, the controlling unit performs first control which causes the holding unit to hold image data read out in the second mode while the sensor array is not irradiated, as offset data for the second mode, and then, performs second control which causes the holding unit to hold image data read out in the first mode while the sensor array is not irradiated, as offset data for the first mode.

主权项

1. A radiation imaging apparatus comprising:
a sensor array configured to detect radiation; a readout unit configured to read out image data from the sensor array, and including, as operation modes, a first mode of reading out image data of one frame in a first period, and a second mode of reading out image data of one frame in a second period shorter than the first period; a holding unit; and a controlling unit, wherein after irradiation to the sensor array is complete, the controlling unit performs first control which causes the holding unit to hold, as offset data for the second mode, image data read out in the second mode by the readout unit from the sensor array while the sensor array is not irradiated, and performs, after the first control, second control which causes the holding unit to hold, as offset data for the first mode, image data read out in the first mode by the readout unit from the sensor array while the sensor array is not irradiated.