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An improved method for flat-field correction of flat panel x-ray detector.

Alexander L C Kwan·J Anthony Seibert·John M Boone
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Abstract

In this Technical Note, the effects of different flat-field techniques are examined for a cesium iodide flat panel detector, which exhibited a slightly nonlinear exposure response. The results indicate that the variable flat-field correction method with the appropriate polynomial fit provides excellent correction throughout the entire exposure range. The averaged normalized variation factor, used to assess the nonuniformity of the flat-field correction, decreased from 30.76 for the fixed correction method to 4.13 for the variable flat-field correction method with a fourth-order polynomial fit for the 60 kVp spectrum, and from 16.42 to 3.97 for the 95 kVp spectrum.

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CesiumHumansIodidesPhantoms, ImagingRadiation DosageRadiographic Image EnhancementRadiographyTechnology, RadiologicX-Ray Intensifying ScreensJournal ArticleResearch Support, N.I.H., Extramural

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Alexander L C Kwan, J Anthony Seibert, John M Boone. 2006. An improved method for flat-field correction of flat panel x-ray detector.. https://doi.org/10.1118/1.2163388

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