Naraghi Ali M, Awdeh Haitham, Wadhwa Vibhor, Andreisek Gustav, Chhabra Avneesh
Division of Musculoskeletal Radiology, Joint Department of Medical Imaging, Toronto Western Hospital, Toronto, Ontario, Canada.
Division of Musculoskeletal Radiology, UTSW Medical Center, Dallas, Texas.
Semin Musculoskelet Radiol. 2015 Apr;19(2):191-200. doi: 10.1055/s-0035-1546824. Epub 2015 Mar 12.
Diffusion tensor imaging (DTI) is a powerful MR imaging technique that can be used to probe the microstructural environment of highly anisotropic tissues such as peripheral nerves. DTI has been used predominantly in the central nervous system, and its application in the peripheral nervous system does pose some challenges related to imaging artifacts, the small caliber of peripheral nerves, and low water proton density. However advances in MRI hardware and software have made it possible to use the technique in the peripheral nervous system and to obtain functional data relating to the effect of pathologic processes on peripheral nerves. This article reviews the imaging principles behind DTI and examines the literature regarding its application in assessing peripheral nerves.
扩散张量成像（DTI）是一种强大的磁共振成像技术，可用于探测高度各向异性组织（如周围神经）的微观结构环境。DTI主要应用于中枢神经系统，其在周围神经系统中的应用确实存在一些挑战，这些挑战与成像伪影、周围神经的小口径以及低水质子密度有关。然而，MRI硬件和软件的进步使得在周围神经系统中使用该技术并获得与病理过程对周围神经的影响相关的功能数据成为可能。本文回顾了DTI背后的成像原理，并审视了有关其在评估周围神经方面应用的文献。
