X-ray tube having an annular vacuum housing
US5528658A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1995 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Aug 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J35/153
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.