Which neuroimaging technique involves injecting an isotope of oxygen into the bloodstream and using it to measure regional cerebral blood flow?
A)fMRI (functional magnetic resonance imaging)
B)PET (positron emission tomography)
C)CT (computerized tomography)
D)EEG (electroencephalography)

Question

Quizplus · Accepted Answer

This neuroimaging technique is called PET (positron emission tomography). The isotope of oxygen injected into the bloodstream emits positrons, which collide with electrons and produce gamma rays that can be detected by the PET scanner. The distribution of the isotope in different regions of the brain reflects regional cerebral blood flow.

Which Neuroimaging Technique Involves Injecting an Isotope of Oxygen into the Bloodstream