One Type of Medical Imaging Process Is Called Positron Emission

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