Final answer:
The calculation of GBEF (Gall Bladder Ejection Fraction) requires the use of cholecystokinin and Tc99m mebrofenine. Cholecystokinin is a hormone that stimulates the gallbladder to contract and release bile, while Tc99m mebrofenine is a radioactive substance used in the imaging process.
Step-by-step explanation:
The calculation of GBEF (Gall Bladder Ejection Fraction) requires the use of cholecystokinin and Tc99m mebrofenine. Cholecystokinin is a hormone that stimulates the gallbladder to contract and release bile, while Tc99m mebrofenine is a radioactive substance used in the imaging process. Both of these substances are necessary to accurately calculate GBEF.
The calculation of Gallbladder Ejection Fraction (GBEF) often requires the use of a stimulating agent to provoke gallbladder contraction and the tracking of a radiolabeled substance to measure the ejection of bile from the gallbladder. The agents that can be used for this purpose include cholecystokinin (CCK), which is a hormone that stimulates the gallbladder to contract, and Tc99m mebrofenin, which is a radiopharmaceutical used to visualize the biliary tract during a hepatobiliary scan. Therefore, the correct answer to the question 'Calculation of GBEF requires:' would be 'e. A and D' which are cholecystokinin and Tc99m mebrofenin respectively.