Dynamic uniform flood correction for radioisotope cameras
US4151416A · kind A · utility
22Cited by
5References
18Claims
0Family size
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Key dates
| Filing date | Aug 5, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Aug 5, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/1642
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The intrinsic nonuniformity of a radioisotope camera having an array of photomultiplier tubes viewing a scintillator crystal assembly is improved by comparing an internally generated correction factor from 1 to n, assigned to a location where a radiation event has been detected, to a random number between 1 and n and then discarding the radiation event datum if the correction factor is less than the random number. Correction factors are first generated by comparing the count at each location with an average minimum count in the presence of a uniform flood source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.