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Purpose: Provide images of the structure and activity of the brain and body. Pros: Cheap, good at showing overall / average activity level of different regions / structures. Cons: Radiation exposure (X-rays + radioisotope), relatively low detail images, the patient must be lying still on the table.
Brain imaging helps us understand and treat various brain disorders: Alzheimer's disease: PET scans detect amyloid plaques and monitor disease progression. Depression: fMRI studies brain activity changes, aiding in identifying specific brain regions involved.
Methods used to study the brain's structure include computed axial tomography (CAT) scans and magnetic resonance imaging (MRI). CAT scans show the size, shape, and position of internal structures by using computer technology to combine a series of X-rays into a detailed image of the skull and brain.
• Neuroimaging, or brain scanning, includes the use of various techniques to either directly or indirectly image the structure, function, or pharmacology of the brain. • Neuroimaging falls into two broad categories: structural imaging and functional imaging.
17 Απρ 2015 · Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT...
Today's MedCat video covers a very medical topic: structural imaging, particularly of the brain—as the MCAT c...
A type of brain imaging technique where glucose molecule with radioactive trackers are injected into the bloodstream; their emission can be measured and give information on metabolically active brain areas
