The positron emission tomography, or PET scan, method of brain study involves a computer-generated image of brain activity by tracing the amount of

Question

Quizplus · Accepted Answer

PET scan measures glucose metabolism in different areas of the brain. A radioactive tracer is used with glucose, and as the brain metabolizes glucose, radiation is released, which is detected by the PET scanner. The detected radiation is used to create an image of brain activity, with more active areas metabolizing more glucose and thus releasing more radiation.

B, C, and D are not correct because PET scan does not directly measure radiation passing through the brain or electrical activity on the surface of the brain. While blood flow is indirectly measured through glucose metabolism, it is not the primary focus of PET scan imaging.

The Positron Emission Tomography, or PET Scan, Method of Brain