Energy dependent gain correction for radiation detection
US4789930A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1985 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Nov 15, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for calibrating the detector gain of a dual energy digital radiography system is provided. A basis material calibration object is scanned to create low and high energy pixel data. A regression is performed on the pixel data to derive at least one high energy calibration vector and at least one low energy calibration vector. The calibration vectors are transformed into high and low energy gain functions represented by a Taylor series expansion. An examination object is scanned to create low and high energy image data. The image data is combined with the gain function to create corrected low and high energy image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.