X-ray tomographic apparatus

摘要

In an X-ray tomographic apparatus, while rotating a gantry rotary section (15) around a region where an object to be photographed is placed, the anode target (26) of an X-ray tube is rotated at a predetermined high rotation rate and X-rays are emitted from the anode target. In emitting the X-rays, the rotation torque is increased to be larger than that prior to rotation of the gantry rotary section in accordance with the rotation drive power supplied to a stator coil (28b). A decrease in rotation rate of the anode target of the X-ray tube can be prevented even during rotation of the gantry rotary section, radiation at a necessary and sufficient X-ray dose can be assured, and an X-ray tomographic image can be properly obtained. <IMAGE>