Time-of-flight capable high resolution pet detector
US7193208B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2005 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Oct 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2985
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An array of position-sensitive avalanche photodiodes is provided in which output signal contacts from corners of each photodiode are grouped in common for readout. Each photodiode may be provided on a single wafer or chip, with photodiodes being separated by a trench or a groove. Corners of each photodiode include contacts for reading out signals resulting from gamma rays incident events in an adjacent scintillator. Grouping of the contacts into common output channels reduces the number of output channels, while still permitting localization of gamma ray incident events in the scintillator crystals. The photodiode array may be positioned adjacent to one face of a scintillator, with a photomultiplier tube to be positioned adjacent to another. The detector arrangement may be used for positron emission tomography imaging and similar techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.