A PET scan detects _____ emitted by brain cells.
A)potassium
B)radioactive iodine
C)electrons
D)positrons

Name: A PET scan detects _____ emitted by brain cells. A)potassium B)radioactive iodine C)electrons D)positrons
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Question

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A PET scan uses a small amount of radioactive substance called a tracer, which is injected into the body. The tracer emits positrons, which can be detected by the scanner and used to create images of brain activity.

A PET Scan Detects _____ Emitted by Brain Cells