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. 2017 Mar 15;7:44678. doi: 10.1038/srep44678

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The S1 nerve root was compressed on the left side. Bilateral nerve roots were assessed by DTI before (A/B) and after surgery (C). (D) shows the FA value before surgery (left side: 0.176, right side: 0.265); (E) shows the FA value after surgery (left side: 0.239, right side: 0.268); (F) shows the ADC value (10⁻³ mm²/s) before surgery (left side: 1.353, right side: 1.113); (G) shows the ADC value (10⁻³ mm²/s) after surgery (left side: 1.226, right side: 1.122). S, sacral. ROIs are indicated with circles in D/E/F/G.