Noninvasive Verification of Nasogastric Tube Placement Using a Magnet‐Tracking System: A Pilot Study in Healthy Subjects

BACKGROUND: Fluoroscopic verification of nasogastric (NG) feeding tube placement is inconvenient and involves radiation exposure. We tested whether the position of an NG tube can be assessed reliably by a recently introduced magnet-tracking system. METHODS: A small permanent magnet was attached at the end of an NG tube and its position was monitored using an external sensor array connected to a computer. NG tube trajectory, spontaneous …