<prompt> Which of the following is used to detect mucosa in Meckels diveiculum: March 2011Technetium-99 scanBarium mealCT scanMRI scan  <response>: Ans. A: Technetium-99 scan Meckels 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 Meckels diveiculum as a source of gastrointestinal bleeding 