Question

which test uses radiation to measure areas brain activity?

• pet scan
• ct scan
• mri
• eeg

Explanation:

• PET scan uses a radiotracer (a form of radiation) to detect metabolic activity in brain regions, mapping brain function.
• CT scan uses radiation but primarily creates structural images, not measures brain activity.
• MRI uses magnetic fields and radio waves, no radiation, and can do structural or functional scans but does not rely on radiation for activity measurement.
• EEG measures electrical brain activity with electrodes, no radiation involved.

Answer:

A. PET scan