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Insights into Imaging
Fig. 2. | Insights into Imaging

Fig. 2.

From: Identifying lumbosacral plexus nerve root abnormalities in patients with sciatica using 3T readout-segmented echo-planar diffusion weighted MR neurography

Fig. 2.

38-year-old female who presented with left leg pain and numbness. DWI-RESOLVE images (a) b = 50, (b) b = 500, (c) b = 800. The arrows on the b800 image correlate to the left L5, S1 and S2 nerves from anterior to posterior. The nerves were evaluated by both readers on axial DWI-RESOLVE images as positive for abnormality (grade II abnormal size and signal intensity). The left L5 nerve appears less involved compared to the left S1 and S2 nerve levels. Axial T2W TSE (d) of the lumbar spine at L5/S1 highlights a large left-sided disc herniation (arrow), which explains symptoms and correlates to nerve abnormalities. The color-mapped image e demonstrates the asymmetry of the lumbosacral plexus to better effect. Long arrows indicate abnormal left nerves and short arrows indicate normal contralateral side

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