Variable code gamma ray imaging system
US4165462A · kind A · utility
54Cited by
2References
14Claims
0Family size
Inventors
Key dates
| Filing date | May 5, 1977 |
| Grant date | Aug 21, 1979 |
| Priority date | — |
| Expiry date | May 5, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/295
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A gamma-ray source distribution in the body is imaged onto a detector using an array of apertures. The transmission of each aperture is modulated using a code such that the individual views of the source through each aperture can be decoded and separated. The codes are chosen to maximize the signal to noise ratio for each source distribution. These codes determine the photon collection efficiency of the aperture array. Planar arrays are used for volumetric reconstructions and circular arrays for cross-sectional reconstructions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.