Systems and methods for mechanically calibrating a multidetector of a nuclear medicine imaging system
US11096651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Feb 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T7/005
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and systems are provided for calibrating a nuclear medicine imaging system having more than 5 detector heads. In one embodiment, a method includes obtaining residual center of gravity determinations corresponding to each of a plurality of detector units based on point source projections acquired over a series of detector unit rotational steps, obtaining center of gravity determinations for each of the plurality of detector units based on point source projections acquired over a series of detector unit sweep angles, obtaining a fit of the center of gravity determinations for each of the plurality of detector units, and determining a sweep offset for each of the plurality of detector units based on the residual center of gravity determinations and the fit of the center of gravity determinations for each of the plurality of detector units. In this way, a sweep axis zero degree position for each of the plurality of detector units is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.