| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluoroscopic apparatus capable of determining whether or not grid control operates normally.SOLUTION: A fluoroscopic apparatus comprises: a grid control detection unit 43 for detecting a waveform of tube voltage to detect propriety or existence of grid control, in order to make it possible to determine whether or not the grid control operates normally from a result obtained by the grid control detection unit 43 detecting the waveform of the tube voltage; and a grid control unit 44 for adjusting grid bias voltage to be applied to a grid electrode on the basis of the waveform of the tube voltage detected by the grid control detection unit 43, in order to make the grid bias voltage increase in the negative direction in the case that the grid control does not operate normally on the basis of the waveform of the tube voltage and perform fluoroscopy with grid bias voltage at time of the determination after the time in the case that the grid control operates normally on the basis of the waveform of the tube voltage. |
