This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Which of the following is used to detect mucosa in Meckel's diveiculum: March 2011 
Select and explain. 
A. Technetium-99 scan, B. Barium meal, C. CT scan, D. MRI scan
A: Technetium-99 scan
Answer: A: Technetium-99 scan 
Explanation: Ans. A: Technetium-99 scan Meckel's diveiculum can be very difficult to demonstrate by contrast radiology; small bowel enema would be the most accurate investigation Technetium-99m scanning may be useful in identifying Meckel's diveiculum as a source of gastrointestinal bleeding