Method to detect energy-dependent count loss
US12193858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2022 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jan 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/171
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method is provided for count loss correction based on detector dead time in a radiation diagnosis apparatus. The method includes acquiring scan data from a scan of a patient performed using the radiation diagnosis apparatus; determining, from the acquired scan data, a first count rate occurring in a first energy window spanning a first energy range; determining, from the acquired scan data, a second count rate occurring in a second window spanning a second energy range, the second energy range being different from the first energy range; calculating a particular count loss correction factor based on the determined first count rate and the determined second count rate; and reconstructing an image based on the acquired scan data and the calculated particular count loss correction factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.