X-ray imaging apparatus

An X-ray imaging apparatus comprising:

• an X-ray irradiation unit including an X-ray tube for irradiating a subject with X-rays;
• an X-ray detection unit including an X-ray detector arranged at a position facing the X-ray tube across the subject and detecting the X-rays passed through the subject;
• a rotation mechanism including a rotating body rotatably constituted around the subject;
• and
• a control unit for controlling rotation of the rotating body and irradiation of the X-rays from the X-ray tube,
• wherein the X-ray irradiation unit and the X-ray detection unit are provided to the rotating body, and
• wherein when a distance from a focal point of the X-ray tube to a center of rotation of the rotating body is defined as X (mm) and a distance from the center of rotation to a detection surface of the X-ray detector is defined as Y (mm), the ratio X:Y is 9:1 to 7:3.