Godenschweger F, Kägebein U, Stucht D, Yarach U, Sciarra A, Yakupov R, Lüsebrink F, Schulze P, Speck O
Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg, Germany.
Phys Med Biol. 2016 Mar 7;61(5):R32-56. doi: 10.1088/0031-9155/61/5/R32. Epub 2016 Feb 11.
Subject motion in MRI is a relevant problem in the daily clinical routine as well as in scientific studies. Since the beginning of clinical use of MRI, many research groups have developed methods to suppress or correct motion artefacts. This review focuses on rigid body motion correction of head and brain MRI and its application in diagnosis and research. It explains the sources and types of motion and related artefacts, classifies and describes existing techniques for motion detection, compensation and correction and lists established and experimental approaches. Retrospective motion correction modifies the MR image data during the reconstruction, while prospective motion correction performs an adaptive update of the data acquisition. Differences, benefits and drawbacks of different motion correction methods are discussed.
在日常临床工作以及科学研究中，磁共振成像（MRI）中的受试者运动都是一个相关问题。自MRI开始临床应用以来，许多研究团队都开发了抑制或校正运动伪影的方法。本综述聚焦于头部和脑部MRI的刚体运动校正及其在诊断和研究中的应用。它解释了运动及相关伪影的来源和类型，对现有的运动检测、补偿和校正技术进行了分类和描述，并列出了已确立的和实验性的方法。回顾性运动校正在重建过程中修改MR图像数据，而前瞻性运动校正则对数据采集进行自适应更新。文中还讨论了不同运动校正方法的差异、优点和缺点。
