decreased FA and increased ADC significantly with age in healthy subjects. There
are significant differences in FA and ADC between early-stage CTS
subjects and age-matched healthy subjects. 0.56 was found to be cutoff value for FA with 89% sensitivity and 88% accuracy and 0.75x10-3mm2/s was found to be cutoff value for ADC with 79% sensitivity and 78% accuracy. Although FA and ADC well correlate with clinical examinations and NCS results,
the value of FA is much stronger than that of ADC for diagnosing CTS earlier. DTI can be used for the early diagnosis of CTS.