Brachial plexus: demonstration at US.

Five healthy volunteers underwent ultrasonography (US) to determine the feasibility of visualizing the brachial plexus. The roots, trunks, and cords could be identified in the supraclavicular and infraclavicular regions. The roots within the neural foramina and the epidural space could not be evaluated. US may play a complementary role in the evaluation of patients with brachial plexopathy.