Fig. 2From: Patient demographics and MRI-based measurements predict redundant nerve roots in lumbar spinal stenosis: a retrospective database cohort comparisonSagittal T2-WI of spinal canal stenosis with evidence of loop-shaped RNR a) Sagittal T2-WI of spinal canal stenosis L2/L3. At this level caudal straightened nerve roots switch to loop like RNR (white arrows); b) The coronal Myelo-MRI shows the horizontalized loops (white arrows); c) Axial T2-WI shows segments of the loops (white arrows); d) Axial T2-WI of a normal lumbar spinal canal: the cauda roots appear as dotsBack to article page