X-ray imaging apparatus
View Patent ↗When a tabletop is rolling, an aperture specifying unit calculates an aperture of diaphragm blades such that a radiation field is to be R′ based on a rolling angle, where R′ is a radiation field having the same radiation area of X-rays after tabletop rolling as a radiation area before the tabletop rolling. The aperture specifying unit instructs a beam-limit control unit to take the calculated aperture of the diaphragm blades in an X-ray beam limiting device. Then, the beam-limit control unit controls the aperture of the diaphragm blades such that the radiation field is to be R′.
1. An X-ray imaging apparatus comprising:
a tabletop on which an object to be inspected lies;
an X-ray tube that irradiates X-ray onto the object;
an X-ray detector that detects X-rays passed through the object;
an arm that supports the X-ray tube and the X-ray detector;
an arm rotating-moving mechanism that rotates and moves the arm;
a tabletop rotating unit that rotates the tabletop around a predetermined axis; and
a radiation-field control unit that controls a radiation field of X-rays irradiated onto the object in conjunction with a rotation of the tabletop rotated by the tabletop rotating unit, wherein the radiation-field control unit controls an aperture of an X-ray beam limiting device in conjunction with the rotation of the tabletop.
2. The apparatus according to claim 1 , wherein the radiation-field control unit controls the radiation field of X-rays in conjunction with the rotation of the tabletop in real time during the rotation of the tabletop.
3. The apparatus according to claim 2 , further comprising an link-control-instruction receiving unit that receives from an operator an instruction whether the radiation-field control unit controls the radiation field.
4. The apparatus according to claim 1 , wherein the radiation-field control unit controls the radiation field in conjunction with the rotation of the tabletop based on a position of the tabletop after the rotation.
5. The apparatus according to claim 4 , further comprising an link-control-instruction receiving unit that receives from an operator an instruction whether the radiation-field control unit controls the radiation field.
6. The apparatus according to claim 1 , further comprising an link-control-instruction receiving unit that receives from an operator an instruction whether the radiation-field control unit controls the radiation field.