Right Anterior Oblique or RAO Position -
Channel: James Smirniotopoulos
Date: 2014-01-14

The Right Anterior Oblique Position  or "RAO" is often used during an Upper Gastrointenstinal Flouroscopy study (UGI or "barium swallow") to better visualize the esophagus.  In this position, the esophagus may be visualized without overlap from the cardiac shadow.