This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdominal Radiography, Subject name: Radiology
The study using barium for small intestine is known as - 
Select and explain. 
A. Barium meal follow through, B. Barium swallow, C. Barium enema, D. None of the above
A: Barium meal follow through
Answer: A: Barium meal follow through 
Explanation: Ans. is 'a' i.e., Barium meal follow through o In most cases the jejunum and Ileum are examined following the barium examination of the upper gastrointestinal tract, referred to as the "barium meal and follow through" or simply **barium follow through".