Opportunities and Challenges for Radiopharmaceuticals

Applications of radiopharmaceuticals in the nervous system, cardiovascular, tumor, hypoxia, and gene imaging are described, and the new research aspects may be provided in the coming years：computer-aided design of radiopharmaceuticals；screening the lead compound by combination chemistry and phage display；chemical modification of existing radio-
pharmaceuticals；developing the PET tracer, the new radiolabeling technique；chemistry of Tc and Re；development of the new radionuclide for diagnosis or therapy, etc.