Scanning X-ray source
US4057745A · kind A · utility
Inventor
Key dates
| Filing date | Mar 4, 1976 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Mar 4, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Radiographic images of high definition and clarity are produced quickly and with reduced radiation exposure of the subject by utilizing a scanning X-ray source in which a moving point source of X-rays is created by sweeping an electron beam in a raster pattern on a broad anode. A radiation detector having a very small radiation sensitive area is situated on the opposite side of the subject from the source. The output of the detector controls electron beam intensity within a cathode ray type display tube wherein the raster pattern is synchronized with that of the X-ray source to produce an image of internal structure of the subject. In some embodiments of the invention, the small radiation detector is mounted on a probe suitable for insertion into internal regions of a living body or into recesses in mechanical structure to be examined. Stereo images may be produced by employing two spaced apart detectors controlling two separate images which are directed to separate eyes of the observer or by using a single detector alternately controlling each of the two images while the raster pattern at the source is alternately shifted between two at least partially separate areas of the anode.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.