Radiopharmaceuticals is a multidisciplinary concept encompassing the design, synthesis, characterization, and application of radioactive compounds for diagnostic imaging and therapeutic intervention in medicine. This field integrates principles from radiochemistry, pharmaceutical science, and nuclear medicine to develop agents that selectively localize in specific organs or tissues, enabling non-invasive visualization of physiological processes or targeted delivery of therapeutic radiation for disease management. Its significance lies in providing essential tools for advanced medical diagnostics and personalized therapeutic strategies within the domain of nuclear medicine.