What is the product of a positron and electron combining and then undergoing annihilation during the PET imaging process?

Question

Quizplus · Accepted Answer

When a positron and electron combine, they annihilate each other and produce two photons of energy 511 keV each, which move in opposite directions. These are the photons detected in the PET imaging process. Therefore, option B is the correct choice. X-rays are not formed during this process. A single gamma ray is also not produced - it requires high-energy photons to form gamma rays. Beta particles are not formed during annihilation.

What Is the Product of a Positron and Electron Combining