X-ray apparatus comprising a collimator and method of operating the collimator

An X-ray apparatus, comprising:

• an X-ray source to radiate X-rays;
• a collimator to adjust a radiation field of the X-rays radiated by the X-ray source;
• a connector having a ring shape with open ends, with one end of the connector fixed to the X-ray source and an other end of the connector rotatably connected to the collimator, so that the collimator is rotatable with respect to the X-ray source on an optical axis direction of the X-rays;
• a ring-shaped first rotation transfer device on the X-ray source;
• a second rotation transfer device on the collimator so as to rotate with rotation of the collimator, the second rotation transfer device being engaged with the ring-shaped first rotation transfer device so as to rotate around the ring-shaped first rotation transfer device as the collimator rotates;
• a rotation sensor to sense an amount of rotation of the second rotation transfer device;
• and
• a detector having a receiving surface on which the X-rays radiated from the X-ray source and having the radiation field adjusted by the collimator are incident.

A method of operating an X-ray apparatus that includes an X-ray source to radiate X-rays, a collimator which is rotatable on an optical axis direction of the X-rays to adjust a radiation field of the X-rays, and a detector having a receiving surface on which the X-rays radiated from the X-ray source and having the radiation field adjusted by the collimator are incident, the method comprising:

• obtaining information about a position of the detector;
• sensing, via a rotation sensor, an amount of rotation of the collimator;
• determining an amount of rotation of a detection signal generated by the X-rays incident on the receiving surface of the detector, based on the sensed amount of rotation of the collimator and the obtained information about the position of the detector;
• generating a corrected image signal based on the determined amount of rotation of the detection signal;
• and
• outputting an image in accordance with the corrected image signal.