Question: what is the difference between modified barium swallow and barium swallow?
Answer: Modified Barium Swallow (MBS) is frequently confused with a Barium Swallow. MBS is an analysis of swallowing through three phases: oral (mouth), pharyngeal (throat) and upper esophagus. A Barium Swallow, on the other hand, focuses on the propulsion of liquid through the esophagus and into the stomach.