UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 1637

Question:
in the investigation of Gastrointestinal bleeding by Tc-99m sulfur colloid scintigraphy

a) specificity is of more than 90%
b) is most useful for upper GI bleeding
c) may detect bleeding of 1mL/min
d) is not useful for bleeding in the splenic flexure
e) if the initial study is normal delyed images should be performed at 12 hours

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