PMID: 9651035Jul 3, 1998Paper

Selection of task-dependent diffusion filters for the post-processing of SPECT images

Physics in Medicine and Biology
F J BeekmanW J Niessen

Abstract

Iterative reconstruction from single photon emission computed tomography (SPECT) data requires regularization to avoid noise amplification and edge artefacts in the reconstructed image. This is often accomplished by stopping the iteration process at a relatively low number of iterations or by post-filtering the reconstructed image. The aim of this paper is to develop a method to automatically select an optimal combination of stopping iteration number and filters for a particular imaging situation. To this end different error measures between the distribution of a phantom and a corresponding filtered SPECT image are minimized for different iteration numbers. As a study example, simulated data representing a brain study are used. For post-reconstruction filtering, the performance of 3D linear diffusion (Gaussian filtering) and edge preserving 3D nonlinear diffusion (Catté scheme) is investigated. For reconstruction methods which model the image formation process accurately, error measures between the phantom and the filtered reconstruction are significantly reduced by performing a high number of iterations followed by optimal filtering compared with stopping the iterative process early. Furthermore, this error reduction can be ob...Continue Reading

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Citations

Sep 2, 2009·European Journal of Nuclear Medicine and Molecular Imaging·Jianbin XiaoFreek J Beekman
Jan 4, 2001·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·K Van LaereR Dierckx
Jan 4, 2001·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·F J BeekmanM A Viergever
Jul 5, 2011·Zeitschrift für medizinische Physik·Peter KnollHelmar Bergmann
Sep 11, 2007·Medical Image Analysis·Andre SouzaAnant Madabhushi
Jun 19, 2007·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Jian ZhouLimin Luo
Apr 19, 2008·IEEE Transactions on Pattern Analysis and Machine Intelligence·John A LeeAnne Bol
Apr 16, 2004·IEEE Transactions on Medical Imaging·Sanida Mustafovic, Kris Thielemans
Dec 10, 1999·Medical Physics·F J BeekmanM A Viergever
Sep 21, 2006·Physics in Medicine and Biology·Tim C de WitFreek J Beekman
Jan 18, 2007·Physics in Medicine and Biology·Kenneth F KoralYuni K Dewaraja
May 1, 2008·Physics in Medicine and Biology·Robert M LappWilli A Kalender
Aug 1, 2012·Acta Radiologica·Marcus SöderbergSigrid Leide-Svegborn
Jun 19, 2012·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·Pieter E B VaissierFreek J Beekman

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