Dr. Choi is clinical chair professor of radiology at Chung-Ang University medical center and a professor emeritus at Seoul National University, College of Medicine. He is a Past chair of the Department of Radiology at the Seoul National University Hospital, and is also a former president of 8 national and international societies including The Korean Society of Radiology (KSR), Asian Oceanian Society of Radiology (AOSR), the Asian Society of Abdominal Radiology (ASAR) and Asian Federation of Societies of Ultrasound in Medicine and Biology (AFSUMB), and member of executive committee of 7 International organizations of Radiology including International Society of Radiology (ISR) and World Federation of Ultrasound in Medicine and Biology (WFUMB). He is an honorary member of 13 international and regional societies including RSNA and ESR. He is also an honorary fellow of 5 prestigious college of radiology including American College of Radiology (ACR) and American Institute of Ultrasound in Medicine(AIUM). He is also the Gold Medalist of Asian Federation of Societies for Ultrasound in Medicine & Biology (AFSUMB), AOSR and ASAR.
Dr. Choi is a world renowned abdominal radiologist, particularly in the field of hepatobiliary imaging including US. He is a tireless and prolific clinical and scientific researcher, devoted teacher, and an outstanding clinician. Dr. Choi has authored more than 530 peer-review international scientific papers and 38 textbooks, and presented more than 470 lectures internationally.