Some embodiments include an x-ray system, comprising: a vacuum enclosure; a plurality of electron sources disposed within the vacuum enclosure; an anode including at least one target with a plurality of focal spots disposed in a planar array within the vacuum enclosure, each focal spot configured to generate an x-ray beam in response to an electron beam from a corresponding one of the electron sources; a plurality of first collimators disposed within the vacuum enclosure, each first collimator associated with a corresponding one of the focal spots and configured to collimate the x-ray beam of the corresponding focal spot; and a second collimator integrated with a housing of the vacuum enclosure or external to the vacuum enclosure, the second collimator configured to collimate each of the x-ray beams.

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.

An X-ray imaging apparatus includes: a tabletop having a placement surface on which a subject is placed; an irradiation unit that irradiates X-rays; a detection unit that detects X-rays that have been irradiated from the irradiation unit and have passed through the subject; an X-ray shielding part, one end of which is attached to the irradiation unit or the detection unit and the other end of which extends toward the placement surface; and a moving mechanism that moves the irradiation unit and the detection unit, wherein a space is formed in a part of the X-ray shielding part on the one end side, and a shielding transparent member that shields X-rays but transmits visible light is attached in the space.

Some embodiments include an apparatus, comprising: a vacuum enclosure including an opening; a support structure disposed in the vacuum enclosure, the support structure comprising: a first portion attached to the vacuum enclosure at the opening; and a second portion extending within the vacuum enclosure; and a plurality of getters disposed on the second portion of the support structure.

X-ray generation apparatus includes X-ray generation tube having insulating tube with first and second opening ends, cathode closing the first opening end and having electron emitting portion, and anode closing the second opening end; electronic component arranged in proximity to the cathode; driving circuit for driving the X-ray generation tube via the electronic component; and accommodating container accommodating the X-ray generation tube, the electronic component, and the driving circuit. The accommodating container has third opening end, and the X-ray generation tube closes the third opening end. The accommodating container defines first space storing at least part of the driving circuit, and second space protruding from the first space and storing the X-ray generation tube and the electronic component.