Anatomie du plexus brachial en IRM

Magnetic resonance imaging (MRI) is the best imaging technique for the evaluation of the brachial plexus. This article recalls brachial plexus anatomy and details MRI radioanatomy. T1 weighted and STIR sequences are required. Gadolinium injection is not systematic. Oblique sagittal and coronal images are important considering the obliquity of the plexus. An oblique sagittal plane, perpendicular to the axis of the brachial plexus, is the most adapted for the cross-section study.