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X-ray scatter correction algorithm for cone beam CT imaging.

Ruola Ning·Xiangyang Tang·David Conover
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Abstract

Developing and optimizing an x-ray scatter control and reduction technique is one of the major challenges for cone beam computed tomography (CBCT) because CBCT will be much less immune to scatter than fan-beam CT. X-ray scatter reduces image contrast, increases image noise and introduces reconstruction error into CBCT. To reduce scatter interference, a practical algorithm that is based upon the beam stop array technique and image sequence processing has been developed on a flat panel detector-based CBCT prototype scanner. This paper presents a beam stop array-based scatter correction algorithm and the evaluation results through phantom studies. The results indicate that the beam stop array-based scatter correction algorithm is practical and effective to reduce and correct x-ray scatter for a CBCT imaging task.

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AlgorithmsHumansPhantoms, ImagingRadiographic Image EnhancementRadiographic Image Interpretation, Computer-AssistedRadiography, ThoracicReproducibility of ResultsScattering, RadiationSensitivity and SpecificityTomography, Spiral ComputedX-RaysComparative StudyEvaluation StudyJournal ArticleResearch Support, U.S. Gov't, P.H.S.Validation Study

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Ruola Ning, Xiangyang Tang, David Conover. 2004. X-ray scatter correction algorithm for cone beam CT imaging.. https://doi.org/10.1118/1.1711475

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