Multiple choice

Which of the following is the most commonly used medical radioisotope?

  1. Uranium-238

  2. Molybdenom-99

  3. Krypton-81

  4. Technetium-99

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Technetium-99m is a meta-stable nuclear isomer of technetium-99, symbolised as 99mTc, and is used in tens of millions of medical diagnostic procedures annually, making it the most commonly used medical radioisotope.