Used in nuclear medicine for radiolabeling peptides and proteins, enabling targeted imaging and therapy. Its structure allows stable complexation with radioactive metal ions like Gallium-68, Lutetium-177, or Yttrium-90, making it valuable in PET imaging and cancer treatments such as peptide receptor radionuclide therapy (PRRT). Commonly conjugated to biomolecules for precise tumor targeting, especially in neuroendocrine tumors and prostate cancer. Also employed in developing diagnostic agents due to high chelate stability and in vivo robustness.