What is the radionucliotide is used in nuclear medicine?

In nuclear medicine, technetium-99m (Tc-99m) is the most widely used radionuclide. It is favored for its ideal physical properties, including a short half-life of about six hours, which minimizes radiation exposure to patients, and the ability to emit gamma rays that are easily detectable. Tc-99m is commonly used in various imaging procedures, such as bone scans, heart studies, and cancer detection, due to its versatility and effectiveness in targeting different organs and tissues.