| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique advantageous for improving exposure control accuracy.SOLUTION: A radiation imaging apparatus comprises: a radiation detection section having a plurality of sensors for detecting radiation; and a monitoring section for monitoring irradiation of the radiation on the basis of signals detected by the plurality of sensors. The monitoring section determines a plurality of effective sensor candidates from among the plurality of sensors, determines the effective sensor candidates, except the effective sensor candidates which detect a signal having the maximum value and the effective sensor candidates which detect a signal having the minimum value among the plurality of effective sensor candidates, as an effective sensor, and monitors irradiation of the radiation on the basis of the signal detected by the effective sensor.SELECTED DRAWING: Figure 1 |
