Final answer:
Glucose consumption in active regions of the brain is measured using a PET scan.
Step-by-step explanation:
The consumption of glucose in active regions of the brain underlies the usefulness of a PET scan. PET scan, or positron emission tomography, is a type of imaging technique that uses a radioactive tracer to measure metabolic activity in the brain. Glucose is the primary source of energy for the brain, and active regions require more glucose, making PET scans a useful tool for studying brain activity.
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