What is the role of diffusion-tensor imaging in the evaluation of ulnar neuropathy?

Updated: Jun 08, 2018
  • Author: Charles F Guardia, III, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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Answer

An additional development in MRI technology is diffusion-tensor imaging. [130] This has heretofore been used mainly to image central myelin tracts, but it is clearly applicable to peripheral myelin as well. As with central myelin, quantitative measures of MRI parameters, including fractional anisotropy (FA), can be obtained. Qualitative FA maps of nerve tracts allow observers to detect peripheral neuropathy with a sensitivity of 80% and a specificity of 83%, which are high enough to make them quite useful.


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