MR Neurography is a non-invasive MRI  technique I use to help diagnose disorders of the peripheral nerves and plexi.  A special MRI protocol is used to optimally image the nerves and then the images are reconstructed on a computer workstation to "straighten" out the nerve pathways to better understand the anatomy. The studies are usually completed in 30 minutes or less.  MR Neurography is used in combination with nerve conduction studies and electromyography to characterize and localize peripheral nerve disorders. The commonest indications are for nerve entrapment, brachial plexus lesions and piriformis syndrome.  There is no special preparation. MR Neurography is  performed without contrast.

Here is a link to an article on MR Neurography  I wrote.  The images in this article are not great and an updated article is pending. 

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