The Value of MR Neurography for Evaluating Extraspinal Neuropathic Leg Pain: A Pictorial Essay

localizer image (280/14/1) indicates the sagittal oblique plane and coverage area for imaging the LS plexus and proximal sciatic nerve. Summary: Fifteen patients with neuropathic leg pain re-ferable to the lumbosacral plexus or sciatic nerve under-went high-resolution MR neurography. Thirteen of the pa-tients also underwent routine MR imaging of the lumbar segments of the spinal cord before undergoing MR neu-rography. Using phased-array surface coils, we performed MR neurography with T1-weighted spin-echo and fat-sat-urated T2-weighted fast spin-echo or fast spin-echo inver-sion recovery sequences, which included coronal, oblique sagittal, and/or axial views. The lumbosacral plexus and/or sciatic nerve were identified using anatomic location, fas-cicular morphology, and signal intensity as discriminator