C-arm imaging system and method
US11490872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2020 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Feb 23, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J35/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for imaging an object includes an X-ray source operative to transmit X-rays through the object and a detector to receive the X-ray energy of the X-rays after passing through the object and to generate corresponding object X-ray intensity. The system also includes a controller to measure a detector entrance dose with no object being placed on the X-ray beam path and determine a relationship between an X-ray tube electrical parameter and the detector entrance dose. The controller further determines a relationship between the X-ray tube electrical parameter, the detector entrance dose and a detector average pixel intensity and obtains a normalized air map as a function of the X-ray tube electrical parameter based on calibration image data. The controller also generates an air map based on the normalized air map, the detector entrance dose and the detector average pixel intensity and reconstructs an image of the object based on the air map and the measured object X-ray intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.