الفهرس 
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Abstract
Peripheral neuropathies Are one of the most common reasons for seeking neurological care in everyday practice. Electrophysiological studies remain fundamental for the diagnosis and etiological classification of peripheral nerve impairment.
The term peripheral neuropathies includes symmetric polyneuro-pathy, single and multiple mononeuropathy, and radiculopathy. While nerve-conduction studies remain fundamental for the confirmation of the diagnosis, assessment of severity, and etiological classification of peripheral neuropathies, new challenges arose in the last years on how to acquire the best static and dynamic imaging of the relevant nerve structures, aiming to a holistic approach to peripheral nerve impairment.
Neuromascular US can add the morphological view on nerve pathology to the differential diagnosis of neuropathies.
Pathological Ultrasound Findings
The ultrasound examination of a peripheral nerve mainly focuses on the assessment of its:
1) Cross sectional area (CSA) at certain sites of clinical interest.
2) Variability of the CSA along its anatomical course, it increase in peripheral neuropathies.
3) Echogenity: reduced echogenicity with loss of the fascicular echostructure or the selective hypertrophy of individual nerve fascicles.
4) Vascularity: can be evaluated with the use of the Doppler technique. normal peripheral nerves show no color.
5) Nerve mobility: reduced slippage of the median nerve during finger and wrist flexion in patients with CTS and the luxation/subluxation of the ulnar nerve to the medial epicondyle in patients with cubital tunnel syndrome.
In our study, there was significant correlation between ultrasound and electrophysiological findings and clinical neuromascular US can be used to diagnose different types of Peripheral neuropathy but it can’t distinguish demyelinating and axonal variants of GBS.