ArticleCureus2025
Diagnostic Utility of Fractional Anisotropy and the Apparent Diffusion Coefficient in the Median Nerve: A Nerve Conduction Velocity-Stratified Evaluation Using 3T MRI.
Article in Cureus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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13 authors.
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Abstract
objectivesThis study aimed to evaluate the clinical utility of fractional anisotropy (FA) and the apparent diffusion coefficient (ADC) values obtained by diffusion tensor imaging (DTI) of the median nerve at the wrist, in human subjects stratified by nerve conduction velocity (NCV) findings. MATERIALS AND
methodsWrist DTI was performed on a 3T scanner using a dedicated flex coil. A total of 85 wrists from 43 NCV-normal subjects and 17 wrists from 10 NCV-abnormal subjects were included. The normal subjects were asymptomatic, with no upper-extremity pathology. The abnormal subjects had suspected or subclinical median nerve impairment confirmed by abnormal NCV findings. FA and ADC values were extracted, and the statistical analyses included the correlation with age and sex (in NCV-normal subjects), group comparisons, and a receiver operating characteristic (ROC) analysis to determine the diagnostic utility of FA and the ADC.
resultsIn the NCV-normal subjects, the mean FA was 0.535 ± 0.072, and the mean ADC was 0.756 ± 0.126 × 10
conclusionFA and ADC values both reflected median nerve impairment confirmed by the NCV. The ADC showed a trend toward superior diagnostic performance in distinguishing NCV-abnormal cases compared to the FA. These findings suggest the potential value of ADC as a clinically relevant imaging biomarker for peripheral nerve evaluations.
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