Detector assembly for multi-modality scanners
US6448559B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2985
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A detector assembly for multi-modality PET/SPEC/CT scanners comprises a first layer for detecting low energy gamma radiation and X-rays and a second layer for detecting high energy gamma radiation. The first layer is generally transparent to high energy gamma radiation. The second layer may advantageously provide measurement of depth of interaction of the high energy radiation. The first layer is preferably in the form of a thin CsI(TI) scintillator, while the second layer includes a pair of LSO/GSO scintillators. The detector assembly includes a photodetector, preferably in the form avalanche photodiode to transform the light signals from the scintillators into electric signals. The detector assembly is advantageously incorporated in a multi-modality PET/SPECT/CT scanner allowing simultaneous transmission and emission imaging with the same detection geometry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.