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: Surgery
[{'content': 'Best Diagnosis for Ectopic gastric mucosa of meckels diveiculum - \nSelect and explain. \nA. Fluoroscopy, B. Occult blood test in stool, C. Ultrasound abdomen, D. Radionuclide scan', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans is \'d\' ie. Radionuclide scan "If a Meckels diveiculum is suspected because of repeated gastrointestinal haemorrhage the abdomen can be scanned after the injection of 99Tc-labelled peechnetate intravenously. This may localise heterotopic gastric mucosa revealing the site of a meckels diveiculum in 90% of cases." - Bailey & Love', 'role': 'assistant'}]