title: Postprocessing method for reducing phase effects in reconstructed microcomputed-tomography data.
abstract: With increased resolution in x-ray computed tomography, refraction adds increasingly to the attenuation signal. Though potentially beneficial, the artifacts caused by refraction often need to be removed from the image. In this paper, we propose a postprocessing method, based on deconvolution, that is able to remove these artifacts after conventional reconstruction. This method poses two advantages over existing projection-based (preprocessing) phase-retrieval or phase-removal algorithms. First, evaluation of the parameters can be done very quickly, improving the overall speed of the method. Second, postprocessing methods can be applied when projection data is not available, which occurs in several commercial systems with closed software or when projection data has been deleted. It is shown that the proposed method performs comparably to state-of-the-art methods in terms of image quality.
authors: Centre for Image Analysis, Swedish University of Agricultural Sciences, Uppsala, Sweden. erikw@cb.uu.se
authors: Erik L G
authors: EL
authors: Wernersson
authors: Matthieu N
authors: MN
authors: Boone
authors: Jan
authors: J
authors: Van den Bulcke
authors: Luc
authors: L
authors: Van Hoorebeke
authors: Cris L
authors: CL
authors: Luengo Hendriks