A patient is preparing to undergo positron emission tomography (PET)of the brain for preoperative evaluation of tumors.The nurse should expect that which of the following contrast media will most likely be used for this test, given its role as a glucose analogue with little localization in normal tissue?
A)Technetium-99m (Tc-99m)pertechnetate
B)Fluorodeoxyglucose (FDG)
C)Iodine-123
D)Thallium

Question

Quizplus · Accepted Answer

Fluorodeoxyglucose (FDG) is the contrast media used in PET scans for brain tumors as it has similar properties to glucose and is taken up by cancerous cells, allowing for better visualization of tumors. It has little localization in normal tissue, which enhances the contrast of the tumor image.

A Patient Is Preparing to Undergo Positron Emission Tomography (PET)of