Plural source computerized tomography device with improved resolution
US4637040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1986 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Jan 14, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/70
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for examining a body by means of penetrating radiation. The apparatus has a source of penetrating radiation for transmitting radiation through a body, and a detector array disposed to detect the radiation after passage through the body. Radiation beams emitted by the source traverse a plurality of paths through the body and are detected by the detector. The source has at least two distinct point sources for emitting radiation. The distinct point sources of radiation alternately emit radiation. The detector array can be a reduced array of detectors which subtends less than the full reconstruction circle diameter. A method is provided for increasing the spatial resolution in a CT scanner by increasing the sampling density by interleaving radiation beams emitted by the radiation source between adjacent radiation beams continuously as the source and detectors are rotated about the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.