Which safety risk increases within positron emission tomography (PET) imaging when using short-lived isotopes?

💡 Explanation

Significant Bremsstrahlung exposure increases when short-lived postitron-emitting isotopes are used because beta decay produces high-energy positrons that decelerate within tissues. Therefore, Bremsstrahlung production increases, rather than pair production which arises from gamma rays instead of beta particles.

• Which outcome occurs when an STM tip approaches a non-conductive surface?
• Which mechanism limits LED efficiency during high current operation?
• Which outcome accelerates when sodium chloride crystal defects increase?
• Which process accelerates formaldehyde production from methanol using a silver catalyst at high temperature?
• Which mechanism limits the electrical conductivity of a metalloid like silicon at room temperature?
• Which outcome occurs to reaction rate when positive catalysts lower activation?