Orthogonal scan computerized tomography
US4107532A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 11, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Nov 11, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4291
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Two sources, each producing divergent beams of radiation, are translated in orthogonal directions. The divergent beams are each scanned through the object being studied. The sum of the angular extent of each of the divergent beams is approximately 180.degree. so that the detected radiation transmitted through the object provides all of the information required to produce a cross-sectional image of the object. An advantage in the use of the orthogonal scans of the present invention is that faster scan times are achieved due to the simple translational motion required of each of the two sources. This allows studies to be made of dynamic organs such as the heart. A further advantage is that the detectors used can be simply calibrated during the scan since, for part of the scan, the divergent beam is not transmitted through the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.