- Catholic Central Medical Center Resident
- Clinical instructor, full-time instructor, assistant professor, associate professor, head of radiology at Uijeongbu St. Mary's Hospital
- Clinical Professor, Chungbuk National University Hospital
- Department of Radiology, Catholic Kwandong University International St. Mary's Hospital
- Professor at Catholic Kwandong University International St. Mary's Hospital
- Reviewer for the Korean Journal of Radiology and the Korean Society of Ultrasound Medicine
- Reviewer for American Journal of Roentgenology
- General trade manager of the Korean Society of Musculoskeletal Radiology
- Ultrasonography judge
- Served as Ultrasonography Section Editor
