Artificial intelligence using deep neural network learning for automatic location of the interscalene brachial plexus in ultrasound images.

Background: Identifying the interscalene brachial plexus can be challenging during ultrasound-guided interscalene block.

Objective: We hypothesised that an algorithm based on deep learning could locate the interscalene brachial plexus in ultrasound images better than a nonexpert anaesthesiologist, thus possessing the potential to aid anaesthesiologists.

Design: Observational study.