What’s a Particle Accelerator Doing in a Hospital?

The video explains how radioactive decay and positrons are used in medical imaging, specifically through Positron Emission Tomography (PET) scans. It details the creation and use of radiotracers, like fluorodeoxyglucose (FDG), which are produced using a cyclotron. These radiotracers help in diagnosing conditions such as cancer by highlighting areas with higher metabolic activity, like tumors. The process involves creating isotopes, incorporating them into molecules, and ensuring timely delivery to patients due to their short half-life.

What is the primary purpose of using positrons in PET technology?

• To create a magnetic field

• To stabilize radioactive isotopes

• To produce gamma rays for imaging

• To increase the half-life of radiotracers

Why do radiotracers accumulate more in tumors compared to normal cells?

• Tumors have a slower metabolism

• Radiotracers are repelled by normal cells

• Tumors have a faster metabolism

• Radiotracers are attracted to healthy cells

What is the half-life of the radiotracer FDG?

• 180 minutes

• 110 minutes

• 60 minutes

• 30 minutes

What is the role of a cyclotron in the production of FDG?

• To cool down radioactive isotopes

• To measure gamma rays

• To store radiotracers

• To create a beam of protons

How is fluorine-18 incorporated into FDG?

• By dissolving it in saline

• By heating it with oxygen

• By substituting it into a sugar molecule

• By mixing it with water