Towards novel regularization approaches to PET image reconstruction

E. Karali, D. Koutsouris

Department of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece.

DOI: 10.4236/jbm.2013.12002                

Abstract

The purpose of this study is to introduce a novel empirical iterative algorithm for medical image reconstruction, under the short name MRP-ISWLS (Median Root Prior Image Space Weighted Least Squares). Further, we assess the performance of the new algorithm by comparing it to the simultaneous version of known MRP algorithms. All algorithms are compared in terms of cross-correlation and CNRs (Contrast-to-Noise Ratios). As it turns out, MRP-ISWLS presents higher CNRs than the known algorithms for objects of different size. Also MRP-ISWLS has better noise manipulation.

Keywords

Image Reconstruction; Positron Emission Tomography (PET); Small Animal Imaging; Median Root Prior (MRP)

Conflicts of Interest

The authors declare no conflicts of interest.

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