One Type of Medical Imaging Process Is Called Positron Emission

question 13

Multiple Choice

One type of medical imaging process is called positron emission tomography.Radioactive material is injected into a patient; during the radioactive decay the material emits a positron, which then interacts with an atomic electron, emitting gamma rays, which are detected by the imager.This gamma ray emission process is called:

• A)pair production
• B)annihilation
• C)absorption
• D)alpha decay
• E)fission

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