Which isotope is used in radiolabeling in low gamma detection?

The isotope commonly used in radiolabeling for low gamma detection is Technetium-99m. This isotope is favored because it emits gamma radiation at a relatively low energy level, making it ideal for imaging purposes in nuclear medicine. Its half-life of approximately 6 hours allows for sufficient time to conduct diagnostic procedures while minimizing patient exposure to radiation. The low gamma emissions facilitate better detection and imaging, as they cause less interference compared to higher-energy emissions, leading to clearer diagnostic images.

While sodium iodide is used in certain types of radiation detection and treatment, it is not typically associated with low gamma detection or radiolabeling in the same way that Technetium-99m is. Yttrium-90 is primarily used for therapeutic applications, especially for targeted cancer treatments, and iodine-131 is often used in the treatment of thyroid conditions but does not possess the same favorable characteristics for imaging as Technetium-99m does.