Purpose : This study was conducted to describe the postopertive MRI findings with contrast enhancementfollowing anterior cervical fusion(ACF). Materials and Methods : Thirteen patients after anterior cervical fusionsfor disc herniation or traumatic injury were studied with MRI 1 month to 10 months after operation. MRI findingswere analysed with attention to the remained vertebral body, disc material, retropharyngeal soft tissue, graftedbone fragment, and biological orthopedic prosthesis(BOP). Results : In 813 cases(62%), enhancement of theretropharyngeal soft tissue was seen with good demarcation between soft tissue and surrounding vertebra or disc.In 913 cases(69%), grafted bone or BOP was well defined by intersurface with low signal intensity. In 4 cases ofACF with bone graft, 2 cases(50%) showed heterogeneous or homogeneous enhancement of grafted bone fragments.Remained vertebral bodies and discs showed enhancements in 813 cases(62%). Conclusion : Postoperative MR findingsafter ACF included good margination of enhanced retropharyngeal soft tissue, grafted bone, and remained vertebralbodies/discs. The MRI could be a useful study to differentiate findings after ACF from posoperative inflammationssuch as spondylitis or discitis, and be a good imaging modality for follow up of grafted bony fragment or BOP.