Radiation imaging apparatus and method for controlling the same

摘要

A radiation imaging apparatus performs radiation image obtaining processing in accordance with an exposure instruction, and obtains a radiation image. Then the radiation imaging apparatus performs offset correction for the obtained radiation image, and displays it. The radiation imaging apparatus determines, in accordance with a predetermined criterion, whether or not offset images obtained by offset image obtaining processing are stable over time. Then, if it is determined that the offset images are not stable, offset correction is performed by using an offset image obtained by performing offset image obtaining processing, following the obtaining of the radiation image. If it is determined that the offset images are stable, the offset correction is performed by using an offset image obtained before the obtaining of the radiation image.

主权项

1. An X-ray imaging apparatus comprising:
a sensor array configured to obtain X-ray image data; a read-out circuit configured to read out electric signals from the sensor array to obtain X-ray image data; a determination unit configured to determine stability of offset data included in the X-ray image data obtained by the read-out circuit before the X-ray image data is obtained based on data that the read-out circuit has repeatedly read out during a period in which a condition where no X-ray is irradiated continues before an irradiation of the X-ray; and a control unit configured to, when it is determined that the offset date is stable, perform a first control in which offset data for offset correction to X-ray image data is obtained using the read-out circuit before obtaining the X-ray image data, and perform a second control after the first control, in which X-ray image data is obtained using the read-out circuit.