A novel noise suppression solution in cone-beam CT images
Proceedings of SPIE(2011)
Abstract
The Feldkamp (FDK) algorithm is the most popular algorithm for circular cone-beam computed tomography (CBCT). While, due to the spatially invariant interpolation process and pre-weighting factor adopted in numerical implementation of the algorithms, non-uniform noise propagation have been observed across the field-of-view. In this study, instead of using spatially invariant interpolation, we consider the spatially variant weighting to compensate for the non-uniformity. The simulation study demonstrates the effectiveness of the presented solution.
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Key words
Cone-beam CT,Feldkamp (FDK),non-uniform noise propagation,spatially variant interpolation
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