Gel Immersion vs. Water Immersion Endoscopic Ultrasound for Visualization of the Duodenal Papilla and Periampullary Lesions: A Dual-Center Retrospective Study With Blinded Evaluation of Archived Videos. | Synapse
March 8, 2026
Gel Immersion vs. Water Immersion Endoscopic Ultrasound for Visualization of the Duodenal Papilla and Periampullary Lesions: A Dual-Center Retrospective Study With Blinded Evaluation of Archived Videos.
Key Points
To compare gel immersion endoscopic ultrasound (GI-EUS) with water immersion (WI) in visualizing the duodenal papilla and periampullary lesions.
Retrospective dual-center design
Blinded evaluation of archived endoscopic ultrasound videos
Comparison of visual clarity and stability between GI-EUS and WI
Clinical utility of GI-EUS is supported for pancreatobiliary evaluations
Abstract
Compared with WI, GI-EUS significantly improves ampullary delineation with enhanced liquid stability and clarity, supporting clinical utility in pancreatobiliary EUS evaluations.