Which of the following is NOT true of positron emission tomography (PET)?
A) It replaced functional magnetic resonance imaging (fMRI) because it was less expensive.
B) It shows which areas of the human brain are activated during cognitive activity.
C) It provides a lower-resolution image than fMRI.
D) It involved injecting radioactive tracers into a person's bloodstream.

Question

Quizplus · Accepted Answer

PET did not replace fMRI because it was less expensive. PET and fMRI are both used for different purposes and have their own advantages and limitations. PET uses radioactive tracers, while fMRI relies on changes in blood oxygenation to map brain activity.

Which of the Following Is NOT True of Positron Emission