Brain Imaging Procedures: CT, MRI, PET, and SPECT Explained
CT scan (computed tomography): A CT scan uses X-rays and a computer to create detailed cross-sectional images of the brain.
MRI (magnetic resonance imaging): An MRI uses magnetic fields and radio waves to create detailed images of the brain.
PET scan (positron emission tomography): A PET scan uses radioactive tracers to measure brain activity.
SPECT (single-photon emission computed tomography): A SPECT scan uses radioactive tracers to measure brain activity.
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