Abstract: In one embodiment, an X-ray diagnostic apparatus includes: an X-ray generator; a current measurement circuit; a display; and processing circuitry. The X-ray generator includes: a filament connected to a cathode of an X-ray tube and configured to emit electrons; a target connected to an anode of the X-ray tube and configured to generate X-rays by receiving the electrons; and a grid configured to adjust an electric potential gradient around the filament. The current measurement circuit measures an electric current flowing between an electrode of the grid and a common electrode of the filament. The processing circuitry calculates an index related to a lifetime of the filament on the basis of a measurement value of the electric current, and causes the display to display the index.

Abstract: According to one embodiment, an X-ray diagnostic apparatus includes X-ray generators, X-ray detectors, high voltage generators, a switching device, an abnormality detection unit and a control unit. The high voltage generators are configured to apply voltages to the X-ray generators. The switching device is configured to switch outputs from the high voltage generators to the X-ray generators. The abnormality detection unit is configured to detect an abnormality in the high voltage generators. The control unit is configured to control the switching device to switch from an output from a high voltage generator of which abnormality has been detected by the abnormality detection unit toward a corresponding X-ray generator to an output from another high voltage generator toward the corresponding X-ray generator.

Abstract: According to one embodiment, an X-ray diagnostic apparatus includes X-ray generators, X-ray detectors, high voltage generators, a switching device, an abnormality detection unit and a control unit. The high voltage generators are configured to apply voltages to the X-ray generators. The switching device is configured to switch outputs from the high voltage generators to the X-ray generators. The abnormality detection unit is configured to detect an abnormality in the high voltage generators. The control unit is configured to control the switching device to switch from an output from a high voltage generator of which abnormality has been detected by the abnormality detection unit toward a corresponding X-ray generator to an output from another high voltage generator toward the corresponding X-ray generator.