System and method for calibrating a PET scanner
US10663608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2016 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | May 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/304
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may correlate to coincidence events resulting from annihilation of positrons emitted by a radiation source. A first time of flight (TOF) of the LOR may be calculated based on the coincidence events. The position of the radiation source may be determined. A second TOF of the LOR may be calculated based on the position of the radiation source. A time offset may be calculated based on the first TOF and the second TOF. The first detector unit and the second detector unit may be calibrated based on the time offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.