Which of the following is a drawback of the PET scan?
A) People are exposed to small amounts of radioactivity,making extensive scanning risky.
B) It measures the overall electrical activity of many different areas of the brain at once,making it difficult to pinpoint the exact location of specific brain wave activity.
C) It simply measures the brain's structure,rather than brain activity.
D) The cost is usually not justified.
Correct Answer:
Verified
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