Towards novel regularization approaches to PET image reconstruction

• 作者: D. Koutsouris E. Karali
• 来源期刊: 生物科学与医学(英文)
• 学科: 医学
• 关键词: Image RECONSTRUCTION POSITRON Emission TOMOGRAPHY (PET) Small Animal Imaging MEDIAN ROOT Prior (MRP)
• 年，卷（期）: 2013,（2）
• 页码范围: 6-9
• 页数: 4页
• 分类号: R73

摘要

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.