Barium swallow is used for-
High-Yield Explanation
Ans. is 'b' i.e., EsophagusBarium investigationUsed to visualizeBarium swallowMainly for esophagusBarium mealEsophagus, stomach, duodenumBarium follow throughSmall intestine (jejunum and ileum)Barium enemaLarge intestine (colon & rectum)