Area detector array for computer tomography scanning system
US6091795A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1997 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Oct 10, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4291
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A two-dimensional area detector array for a CT scanning system includes a set of alignment grids for aligning individual scintillator crystals with corresponding photodiodes and for preventing optical and electrical interference between adjacent photodiodes. The alignment grids thus facilitate efficient transfer of information from the scintillation crystals to the photodiodes and also permit the detector array to be constructed with many very small, very closely spaced individual detector elements. The alignment grids are preferably made of a substantially opaque material having a relatively low coefficient of thermal expansion. They provide a highly beneficial dimensional stability to the detector array under the typical operating conditions of the CT scanner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.