Patent ID: 7806590

Claim:
An X-ray CT apparatus comprising: an annular rotator including: an X-ray tube; an X-ray detector disposed oppositely to the X-ray tube; a radiator disposed in a vicinity of the X-ray tube and dissipating heat from the X-ray tube; an air outlet provided in a vicinity of the radiator; and an air inlet provided at a position oppositely to the air outlet, a gantry cover covering peripheral of the annular rotator and having an upper air vent and a plurality of lower air vents; a plurality of fans discharging to the outside air exist in a gap between the gantry cover and the annular rotator from the air outlet; and a baffle plate provided in the gap in a vicinity of the lower air vents and controlling an air flow passing through internal space of the annular rotator and an airflow passing through the gap.