During a Positron Emission Tomography (PET) Scan of the Brain

question 11

Multiple Choice

During a positron emission tomography (PET) scan of the brain,

• A) radioactive fluorine creates positrons within the brain that are detected as they leave the patient.
• B) an external positron beam is sent through the patient's brain and detected as it leaves the patient.
• C) matter and antimatter annihilate within the brain to create positrons that are detected as they leave the patient.
• D) positrons and electrons annihilate within the brain to create gamma photons that are detected as they leave the patient.
• E) highly sensitive detectors measure the positrons that are naturally emitted by the human body.

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