Fig. 2From: Interscalene brachial plexus nerve block in the emergency department: an effective and practice-changing workshopImage acquisition. To pass this assessment, residents needed to acquire an ultrasound image on a healthy volunteer and identify the sternocleidomastoid (SCM), anterior scalene (AS), middle scalene (MS), interscalene groove (C5–7), and carotid artery (CA). They also had to indicate the needle path and site of injectionBack to article page