Gamma camera with automatic adjustment of the energy spectrum
US6635878B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Jan 6, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4258
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A nuclear camera system is provided in which the energy spectrum peaks identified by a camera detector head are automatically adjusted to account for drift and other sources of inaccuracy. Histograms of events detected by the photomultiplier tubes of the detector head are acquired continuously and updated periodically. A system operator initiates the adjustment with an autopeaking command which causes the system to ascertain the validity of the histogram data and, if it is valid, to determine a peak energy level. The determined level is compared to a theoretical value for an isotope present and the comparison is used to adjust the gain applied to energy data of the detector head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.