In this study, we aimed to investigate if diffusion tensor imaging technique can quantitatively evaluate nerve root in lumbosacral radiculopathy by measuring MR fractional anisotropy (FA) values. By measuring 34 patients with unilateral disc related lumbosacral nerve root compression, we found that the mean FA value of nerve root correlate significantly with JOA score that is performed on the clinical function of the patients. Therefore, we can demonstrate that DTI can quantitatively and clinically evaluate nerve root by measuring FA values in disc related lumbosacral radiculopathy.
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