Ultrasound persistent median artery

This is a real-time axial image of the median nerve (N) at the wrist in a healthy subject with a persistent median artery (A). Note that the nerve and artery are in the same fibrous tissue sheath, as they move together with piano-playing movements of the fingers. The pulsations of the artery are apparent on B-mode and the presence of Doppler signal further confirms pulsatile flow through this structure.