The goals of this study were to investigate image quality of coronary CT angiography (CCTA) and change of radiation dose by using Adaptive Statistical Iterative Reconstruction (ASIR) technique. 40 subjects with BMI≥25 (A, C groups), 40 subjects with BMI<25 (B, D groups), Groups without ASIR (A, B groups), and with ASIR (C, D groups) were included. There were no statistical differences in image qualities (p>0.05). Radiation doses with application of ASIR were significantly lower than those of ASIR (51-53%, p<0.05). In CCTA scan-nings, ASIR technique helps to reduce radiation dose with preserved image quality.

서 론
 대상 및 방법
  검사대상
  CT 검사법
  화질의 평가
  피폭선량 분석
  통계적 분석
  결과
 고 찰
 참고문헌

• 이강영(순천향대학교 부천병원 영상의학과) | Kang Young Lee (Department of Radiology, Soonchunhyang University Hospital Bucheon)
• 김동훈(조선대학교병원 영상의학과, 조선대학교 의학전문대학원 영상의학과) | Dong Hun Kim (Department of Radiology, Chosun University Hospital, Department of Radiology, Chosun University, College of Medicine) Corresponding author
• 윤은주(조선대학교병원 영상의학과)
• 전진만(조선대학교병원 영상의학과) | Jin Man Jeon (Department of Radiology, Chosun University Hospital)
• 정명진(조선대학교병원 영상의학과) | Myung Jin Jung (Department of Radiology, Chosun University Hospital)