X-ray tube and X-ray CT device

摘要

Disclosed is an X-ray tube that has a simple configuration and is capable of irradiating multiple different X-rays while switching them at a high rate, as well as an X-ray CT device using the X-ray tube. The X-ray tube comprises first and second electron generators, a deflection means, and a target. The deflection means switches the direction in which first and second electron beams are transmitted between first and second directions. The target comprises first, second, third, and fourth surfaces. The first surface receives a first electron beam transmitted toward the first direction and irradiates a first X-ray toward the irradiation field. The second surface receives a second electron beam transmitted toward the first direction and irradiates a second X-ray toward a direction different from the irradiation field. The third surface receives a first electron beam transmitted toward the second direction and irradiates the first X-ray toward a direction different from the predetermined irradiation field. The fourth surface receives a second electron beam transmitted in the second direction and irradiates the second X-ray toward the irradiation field.

主权项

1. An X-ray tube comprising:
a first electron generator configured to emit a first electron beam; a second electron generator configured to emit a second electron beam that is different in energy from the first electron beam; an X-ray generator including a first surface, the X-ray generator configured to generate a first X-ray upon receipt of the first electron beam, and generate a second X-ray upon receipt of the second electron; and a deflector configured to selectivety deflect the first electron beam such that the first surface receives the first electron beam or a surface other than the first surface receives the first electron beam, wherein when the first surface receives the first electron beam, the first X-ray is thereby irradiated toward a predetermined irradiation field, and when the surface other than the first surface receives the first electron beam, the first X-ray is thereby irradiated in a direction different from direction of the predetermined irradiation field.