PCCT energy calibration from X-ray tube spectra using a neural network
US12306362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2023 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Aug 9, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for calibrating a detector, including acquiring an energy spectrum obtained from a scan using an X-ray tube as a source of radiation, estimating calibration parameters, such as a gain and an offset, for each of several channels of the detector by applying the acquired first energy spectrum to inputs of a trained neural network that outputs the calibration parameters, and calibrating each of the plurality of channels using the estimation parameters. The neural network is trained to produce target output calibration parameters, using two or more measurements selected from isotope peak positions, K-edge absorption features, or K-edge emission peaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.