Method for neutralizing image artifacts prior to determination of signal-to-noise ratio in CR/DR radiography systems
US8194966B2 · kind B2 · utility
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Key dates
| Filing date | Dec 18, 2007 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Mar 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2014
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for neutralizing the non-noise correlated, multiplicative image-artifacts introduced by the X-ray exposure, the detector or the digitizer prior to the determination of the Signal-to-Noise Ratio or the (Normalized) Noise Power Spectrum in CR/DR radiography systems. This method uses statistical techniques and the photon-noise physical model to correct the raw, digital image-data obtained in the selected region of interest (roi) for evaluation during quality control (QC).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.