Emission computed tomograph
US4389569A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1980 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Dec 10, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An emission computed tomograph provided with a collimator ring rotatable about an object being examined and having a plurality of slits for defining the direction of incidence of the radiation emitted from the objection the radiation detectors. The slits are arranged circumferentially of the ring and directed at successively different angles relative to the radial direction of the collimator ring, so that as the ring is rotated, the object is tomographically scanned. The collimator ring may be divided into a plurality of equal arcuate portions, in each of which the slits are directed toward the object in parallel with each other, so that as the collimator ring is rotated to scan the object, only the parallel profile data thereof can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.