The design and implementation of COSEM, an iterative algorithm for fully 3-D listmode data

被引：50

作者：

Levkovitz, R

Falikman, D ^{[1
]}

Zibulevsky, M

Ben-Tal, A

Nemirovski, A

机构：

[1] Technion Israel Inst Technol, Minerva Optimizat Ctr, IL-32000 Haifa, Israel

[2] Tech Univ Delft, Dept Control Risk Operat Res & Stat, ITS Fac, NL-2628 CD Delft, Netherlands

来源：

IEEE TRANSACTIONS ON MEDICAL IMAGING | 2001年 / 20卷 / 07期

关键词：

3-D reconstruction; expectation maximization; iterative algorithms; PET;

D O I：

10.1109/42.932747

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In this paper,we present coincidence-list-ordered sets expectation-maximization (COSEM), an algorithm for iterative image reconstruction directly from list-mode coincidence acquisition data, The COSEM algorithm is based on the ordered sets EM: algorithm for binned data but has several extensions that makes it suitable for rotating two planar detector tomographs. We develop the COSEM algorithm and extend it to include analytic calculation of detection probability, noise reducing iterative filtering schemes, and on-the-fly attenuation correction methods. me present an adaptation of COSEM to the Varicam\VG camera and show results from clinical and phantom studies.

引用

页码：633 / 642

页数：10

共 10 条

[1] List-mode likelihood [J].