Byeong-Cheol Ahn received the M.D. and Ph.D. degrees. He has been performing diagnostic nuclear medicine, theranostics practice for thyroid cancer patients and also basic research for the arena, including developing for redifferentiating agents for radioiodine refractory thyroid cancer using molecular imaging techniques as a nuclear medicine and internal medicine physician. He is also interested in cell-based therapy for thyroid cancer and in developing the therapy by applying molecular imaging techniques and in processing of medical imaging.