PET scans
A) provide a less detailed image of the brain than does transcranial magnetic stimulation (TMS).
B) show brain structures but not areas of brain activity.
C) track radioactive markers in the blood.
D) require intense X-ray exposure.

Question

Quizplus · Accepted Answer

PET scans involve injecting a small amount of a radioactive tracer into the bloodstream, which is taken up by the brain and tracked by the scan to show areas of brain activity. Therefore, choice C is the correct option as it accurately describes how PET scans work.

PET Scans