X-ray tube having an annular vacuum housing

Details X-ray tube having an annular vacuum housing X-ray tube having an annular vacuum housing

1995-08-10

1996-06-18

Wong, Don

X-ray or gamma ray systems or devices

Source

Electron tube

378121, 378145, H01J 3530, H01J 3524

Patent

active

055286585

ABSTRACT:
An x-ray tube has an annular vacuum housing through which an electron beam passes in an annular path, an annular target from which x-radiation emanates during operation of the x-ray tube when the electron beam strikes it at a point of incidence, and a beam deflector which is movable along the circumference of the vacuum housing and which deflects the electron beam such that it is incident onto the target at a point of incidence that is dependent on the position of the deflector along the circumference of the vacuum housing. An x-ray beam emanating from the target is thus caused to move around the interior of the vacuum housing in the manner necessary for producing computed tomograms of a subject disposed in the interior of the vacuum housing.

REFERENCES:
patent: 4203036 (1980-05-01), Tschunt
patent: 5172401 (1992-12-01), Asari et al.
patent: 5197088 (1993-03-01), Vincent et al.
patent: 5224137 (1993-06-01), Plomgren et al.
patent: 5247556 (1993-09-01), Eckert et al.

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