May-June 2017

Introduction

MR Neurography: State of the Art

Chhabra pic

Avneesh Chhabra

It is my pleasure to write an editorial for this exciting AJNR News Digest on the topic of MR neurography (MRN). MRN has come a long way since its introduction in 1992 by Howe et al.1 Several technical developments have occurred in this domain over the last decade,2–6 and the increasing use of MRN has impacted … more »

Head & Neck

Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence

Fujii pic

Hiroyuki Fujii

Cranial nerve impairments can significantly compromise functionality and quality of life. Knowledge of the anatomic course of each cranial nerve and its relationship with surrounding structures is important for diagnosing various cranial pathologies and preventing complications from surgical interventions.

Despite recent advances in MR imaging technology, visualization of the entire course of the cranial nerves, … more »

Peripheral Nervous System

Diffusivity Measurements Differentiate Benign from Malignant Lesions in Patients with Peripheral Neuropathy or Plexopathy

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Esther Yuh

In the multidisciplinary spine conference at our institution, mass-like lesions associated with peripheral nerves appear frequently on the case list. Whether lesions are incidentally discovered during the course of imaging for an unrelated indication or found during the work-up of mononeuropathy or plexopathy, a central clinical question is often whether to perform debulking or … more »

Spine

Characterization of Peripheral Nerve Sheath Tumors with 3T Proton MR Spectroscopy

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Laura M. Fayad

My research has focused on advancing MR imaging techniques, especially noncontrast techniques, for various applications in musculoskeletal tumor imaging, including the detection, characterization, and assessment of treatment response and the differentiation of postsurgical nodular scar from recurrence. A particular challenge in our field is the characterization of peripheral nerve sheath tumors (PNSTs), as … more »

Spine

Quantitative Evaluation and Visualization of Lumbar Foraminal Nerve Root Entrapment by Using Diffusion Tensor Imaging: Preliminary Results

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Yawara Eguchi

Lumbar nerve entrapment causes low back pain and radiculopathy, but discrepancies between clinical symptoms and the range of compression of the nerve root on conventional MR images are often found. Asymptomatic intervertebral disc degeneration and herniation are often seen in clinical practice, and these discrepancies can confuse spine surgeons.

Lumbar foraminal stenosis is a condition … more »