Department of Nuclear Medicine consists of two full-time faculty members, one clinical assistant professor, residents, and staff members. Since its establishment in 1986, Professor Yoon Young Choi has been serving as the Head Professor after the department’s honorary professor, Suk-shin Cho. Although the Department of Nuclear Medicine started late compared to other departments, the department members are making steady efforts to make an accurate diagnosis with advanced diagnostic equipment such as PET / CT and gamma camera. The department also opened the radioactive idione treatment ward, and is directly involved in the patient-treatment. In addition, with the recent introduction of cycloron and PET / SPECT / CT for small animals and the establishment of research centers, overall development in both clinical and research area is expected.