Method and apparatus for computerized tomographic scanning with plural intersecting sets of parallel radiation beams
US4817119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1977 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Aug 25, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4275
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An array of radiation detectors is rotated about one or more sources of fan-shaped substantially planar radiation beams which are, in turn, rotated in the opposite direction about a three-dimensional body such that substantially parallel paths are defined between given individual detectors of the array and the radiation sources during the course of their oppositely directed movements. Radiation absorption measurements are taken along thusly defined plural intersecting sets of substantially parallel paths within a desired cross-section of the three-dimensional body to provide data for use in computing and displaying a constructed visual image of structures having different radiation absorption coefficients within the cross-section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.