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
Technitium-99 scan is used for diagnosis of - 
Select and explain. 
A. Meckel's diverticulum, B. Appendix, C. Volvulus, D. Obstruction
A: Meckel's diverticulum
Answer: A: Meckel's diverticulum 
Explanation: Technetium - 99m pertechnetate scan, also known as Meckel's scan, is used primarily in the pediatric setting for diagnosis of Meckel's diverticulum.