1. Department of Radiology, Ajou University School of Medicine, Suwon, South Korea
2. Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon, South Korea
3. Department of Nuclear Medicine and Molecular Imaging, Suwon, South Korea
4. Department of Orthopaedic Surgery, Ajou University School of Medicine, Suwon, South Korea
5. Department of Neurosurgery, Ajou University School of Medicine, Suwon, South Korea
6. Department of Clinical Science, Philips Healthcare, Seoul, South Korea
7. Regional Clinical Trial Center, Ajou University Medical Center, Suwon, South Korea
8. Department of Biostatistics, Yonsei University College of Medicine, Seoul, South Korea