Radiation imaging apparatus including radiation detection unit having a plurality of photoelectric conversion units, and control method therefor

摘要

A radiation imaging apparatus includes: a radiation detection unit in which a plurality of photoelectric conversion units to convert radiation signals into charge signals and store the charge signals is located; a storage control unit configured to control the storage of the charge signals executed by the plurality of photoelectric conversion units; a reading control unit configured to control reading of the charge signals stored by the plurality of photoelectric conversion units; and a control unit configured to fix an indefinite potential generated at the radiation detection unit while at least one of the storage control of the charge signals by the storage control unit and the reading control of the charge signals by the reading control unit is not carried out.

主权项

1. A radiation imaging apparatus including a radiation detection unit in which a plurality of photoelectric conversion units configured to convert radiation signals into charge signals and store the charge signals is located, the apparatus comprising:
a storage control unit configured to control the storage of the charge signals executed by the plurality of photoelectric conversion units; a reading control unit configured to control reading of the charge signals stored in the plurality of photoelectric conversion units; and a control unit configured to perform a process for fixing an indefinite potential generated at the radiation detection unit during a time interval in which at least one of the storage control of the charge signals by the storage control unit and the reading control of the charge signals by the reading control unit is not carried out, wherein the radiation imaging apparatus repeatedly performs imaging at a variable frame rate for obtaining multiple frames of a radiation image with the radiation detection unit, and wherein the control unit is configured to change a number of the processes performed such that the process of fixing the indefinite potential during the time interval is repeatedly performed in accordance to the frame rate.