Pet detector module using GAPD composed of large area micro-cells
US8880144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2010 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | May 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/481
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Provided is a positron emission tomography (PET) detector module using Geiger-mode avalanche photodiode (GAPD) as a photosensor. The PET detector module includes: a PET detector unit with a scintillation crystal detecting gamma rays emitted from a living body and converting them into a scintillation light and a first GAPD photosensor and a second GAPD photosensor each being connected to either end of the scintillation crystal and converting the scintillation light into an electrical signal; and a depth of interaction (DOI) decoding unit receiving the signals from the PET detector unit and comparing amplitude of the signals detected by the first GAPD photosensor and the second GAPD photosensor, thereby providing the depth information where the gamma rays are incident on the scintillation crystal (DOI). The disclosed PET detector module can provide improved energy resolution and additional DOI information while maintaining linearity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.