In this study, we identified 26 cases scheduled for lower extremity computed tomography (CT) angiography who had implanted metal devices. These CT exams were performed for evaluation of patients' symptoms related with gait disturbance. CT scans were performed on 128-MDCT using our standard parameters. The row image data were reconstructed using two different methods, standard filtered backprojection (FBP) algorithm and the metal artifact reduction for orthopedic implants (O-MAR) algorithm. Images were evaluated with 3-point scales. The difference of image scores for FBP (1.5±0.81) and OMAR (1.92±0.79) was significant (p<0.05). O-MAR reconstruction significantly improved quality of CT angiography for patients with metal implants.

• 김동훈(조선대학교병원 영상의학과) | Dong Hun Kim Corresponding author
• 변주남(조선대학교병원 영상의학과) | Joo Nam Byun
• 문창훈(조선대학교병원 영상의학과) | Chang Hoon Moon
• 장정환(조선대학교병원 영상의학과) | Jeong Hwan Jang