Which of the following is a brain-imaging method in which radioactive sugar is injected into the subject and a computer compiles a colour-coded image of the activity of the brain,with lighter colours indicating more activity?
A)electroencephalography (EEG)
B)computerized axial tomography (CT)
C)positron-emission tomography (PET)
D)functional magnetic resonance imaging (fMRI)

Question

Quizplus · Accepted Answer

The brain-imaging method described is positron-emission tomography (PET). PET involves injecting a radioactive substance, such as sugar, into the subject and measuring the emissions of gamma rays from the decaying isotopes in the brain. A computer compiles a color-coded image of the activity of the brain, with lighter colors indicating more activity. EEG measures electrical activity in the brain, CT uses X-rays to create detailed images of the brain, and fMRI uses magnetic fields to measure changes in blood flow in the brain.

Which of the Following Is a Brain-Imaging Method in Which