J Korean Soc Radiol.  2020 Jan;81(1):81-100. 10.3348/jksr.2020.81.1.81.

MR Neurography: Current Several Issues for Novice Radiologists

Affiliations
  • 1Department of Radiology, Dong-A University, Busan, Korea. hdhdoc@dau.ac.kr

Abstract

Magnetic resonance neurography (MRN) has been increasingly used in recent years for the assessment of peripheral neuropathies. Fat suppression T2-weighted imaging (T2WI) and diffusion-weighted imaging (DWI) have typically been used to provide high contrast MRN. Isotropic 3-dimensional (3D) sequences with fast spin echo, post-processing imaging techniques, and fast imaging methods, among others, allow good visualization of peripheral nerves that have a small diameter, complex anatomy, and oblique course within a reasonable scan time. However, there are still several issues when performing high contrast and high resolution MRN including standard sequence; fat saturation techniques; balance between resolution, field of view, and slice thickness; post-processing techniques; 2D vs. 3D image acquisition; different T2 contrasts between proximal and distal nerves; high T2 signal intensity of adjacent veins or joint fluid; geometric distortion; and appropriate p-values on DWI. The proper understanding of these issues will help novice radiologists evaluate peripheral neuropathies using MRN.


MeSH Terms

Diagnostic Imaging
Joints
Magnetic Resonance Imaging
Peripheral Nerves
Peripheral Nervous System Diseases
Veins
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