X-ray tube assembly and X-ray CT equipment
AssigneeFUJIFILM Corporation
InventorsKimihiro Nakayama, Yutaro Tanabe, Ren Sonoda
Life of this patent
Estimating the term…
Abstract
A lightweight X-ray tube assembly and X-ray CT equipment having the same. The X-ray tube assembly includes an X-ray tube and a tube housing. The X-ray tube includes: a cathode for generating an electron beam; an anode for radiating X rays by collision of the electron beam; an envelope for holding the cathode and the anode in a vacuum atmosphere; and an X-ray window provided in the envelope to irradiate some of X rays radiated from the anode toward a test subject. The tube housing encapsulates the X-ray tube together with an insulating oil. The X-ray tube assembly further includes a protective member that is provided at least around the X-ray window on an outer wall of the envelope and shields the X rays.
Claims15
An X-ray tube assembly comprising:
- an X-ray tube that includes:
- a cathode for generating an electron beam;
- an anode for radiating X rays by collision of the electron beam;
- an envelope for holding the cathode and the anode in a vacuum atmosphere;
- and
- an X-ray window provided in the envelope to irradiate some of the X rays radiated from the anode toward a test subject;
- a tube housing for encapsulating the X-ray tube together with an insulating oil;
- and
- a protective member that is provided at least around the X-ray window on an outer wall of the envelope and shields the X rays, wherein
- the protective member has a flow passage in which the insulating oil flows, and the flow passage is a hole to lead the insulating oil to a surface of the X-ray window, and
- the protective member has a cylindrical shape to cover a circumference of the X-ray window, and the hole is located so as to make the insulating oil swirl along an inside surface of the protective member.
An X-ray tube assembly comprising:
- an X-ray tube that includes:
- a cathode for generating an electron beam;
- an anode for radiating X rays by collision of the electron beam;
- an envelope for holding the cathode and the anode in a vacuum atmosphere;
- and
- an X-ray window provided in the envelope to irradiate some of the X rays radiated from the anode toward a test subject;
- a tube housing for encapsulating the X-ray tube together with an insulating oil;
- and
- a protective member that is provided at least around the X-ray window on an outer wall of the envelope and shields the X rays,
- wherein a dimple is formed on an outside surface of the X-ray window, and the outside surface is parallel to the X rays that irradiate the test subject.
Dependencies are inferred from the claim text.