Esophageal strictures can occasionally be underdiagnosed because of the failure to achieve complete and consistent distention of the esophagus. When tube esophagography is performed, a small catheter is positioned in the patient's esophagus, and air is insufflated after the patient drinks barium. This produces maximum, uniform distention of the esophagus with little patient discomfort. This technique is valuable in demonstrating mild or subtle strictures, improving mucosal detail, and evaluating areas suggestive of stricture on routine radiographs.
Dubin, Lawrence M.; Halpert, Robert D.; Feczko, Peter J.; and Kottamasu, Sambasiva R.
"The Tube Esophagogram in Cases of Possible Esophageal Stricture: A Technical Note,"
Henry Ford Hospital Medical Journal
: Vol. 33
Available at: https://scholarlycommons.henryford.com/hfhmedjournal/vol33/iss2/8