Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

Radiculopathy: sagittal MRI of lumbar spine

T2-weighted sagittal MRI of the lumbar spine shows the right L4 spinal nerve within the corresponding neuroforamen (straight arrow). The neuroforamen is partially obstructed by a hypointense mass inferiorly (dashed arrow), corresponding to disc material. The amount of hyperintense fat within the neuroforamen is reduced, and the configuration of the L4 spinal nerve suggests deformation. (Contributed by Kristine Ann Blackham MD.)