A medical imaging apparatus includes an anode rotating type X-ray tube which generates X-rays, a high voltage generation unit implemented by circuitry which generates a high voltage to be applied to the X-ray tube, a power supply unit implemented by circuitry which supplies power to the high voltage generation unit, and a control unit implemented by circuitry which controls the high voltage generation unit to stop or start supply of a filament current to the X-ray tube and/or supply of a current to a stator coil for anode rotation in accordance with a predetermined rule.