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Fig. 1A. 60-year-old man with right-sided lumbosacral radicular
syndrome at level L5S1. Sagittal spin-echo unenhanced T1-weighted MR
image (TR/TE, 500/14) shows foraminal herniation of L4L5 disk. Arrow
indicates left-sided nerve root L4, reported as "possibly no root
compression" by one interpreter.