MR Imaging-Guided Attenuation Correction of PET Data in PET/MR Imaging.
MR Imaging-Guided Attenuation Correction of PET Data in PET/MR Imaging.
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DOI：
10.1016/j.cpet.2015.10.002
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发表时间：
2016-04
期刊：
影响因子：
2.6
通讯作者：
Catana C
中科院分区：
文献类型：
--
作者：
Izquierdo-Garcia D;Catana C
衰减校正(AC)是最近推出的正电子发射断层扫描/磁共振成像(PET/MR)联合扫描仪中最重要的挑战之一。PET/MR AC(MR-AC)方法旨在开发能够准确估计位于PET视野(FOV)内的组织和其他成分的线性衰减系数(LACS)的方法。MR-AC方法可分为三大类：基于分割的、基于图谱的和基于PET的。本综述旨在提供一份关于MR-AC方法的最新技术及其优缺点的综合清单。将介绍伪影的主要来源，如身体截断、金属植入和硬件校正。最后，本综述将讨论MR-AC方法在临床应用的现状。
Attenuation correction (AC) is one of the most important challenges in the recently introduced combined positron emission tomography/magnetic resonance imaging (PET/MR) scanners. PET/MR AC (MR-AC) approaches aim to develop methods that allow accurate estimation of the linear attenuation coefficients (LACs) of the tissues and other components located in the PET field of view (FoV). MR-AC methods can be divided into three main categories: segmentation-, atlas- and PET-based. This review aims to provide a comprehensive list of the state of the art MR-AC approaches as well as their pros and cons. The main sources of artifacts such as body-truncation, metallic implants and hardware correction will be presented. Finally, this review will discuss the current status of MR-AC approaches for clinical applications.