Home > Lung Disease > Electromagnetic Navigation Diagnostic Bronchoscopy Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Aug 30, 2010 by Cleveland Clinic, Views: 2765 Learn about electromagnetic navigation diagnostic bronchoscopy, a new technology used to diagnose small lung cancer tumors as small as a pencil eraser before they have the chance to spread. Cleveland Clinic physician Dr. Thomas Gildea demonstrates how this endobronchial ultrasound procedure, which involves using a small camera probe inserted thru the nose into the lungs, allows doctors to reach possible cancer in the lungs that they could never reliably get to before.