CAJ | 학술논문

目的：采用双源CT的MinDose技术（MD-DSCT）及二维超声心动图分别评价并比较主动脉瓣狭窄患者的冠状动脉、瓣环直径及心功能。方法回顾性分析33例欲行换瓣治疗的主动脉瓣狭窄患者。MD-DSCT 检查仅于全 RR间期的10％间期全剂量曝光，于70％ RR间期双斜轴向图像重建。超声心动图及MD-DSCT 采分别测量左室射血分数（LVEF）和主动脉瓣环直径（AVAD）。结果所有患者 MD-DSCT 检查评价冠状动脉均获得良好效果。LVEF-2D与LVEF-MD-DSCT 有较强的相关性（ r ＝0．96，P ＜0．01）。AVAD-2D与AVAD-MD-DSCT 有较强的相关性（ r ＝0．91， P ＜0．01）。结论 MD-DSCT可以于术前一站式评价主动脉瓣狭窄患者的冠状动脉、LVEF以及AVAD。
목적：채용쌍원CT적MinDose기술（MD-DSCT）급이유초성심동도분별평개병비교주동맥판협착환자적관상동맥、판배직경급심공능。방법회고성분석33례욕행환판치료적주동맥판협착환자。MD-DSCT 검사부우전 RR간기적10％간기전제량폭광，우70％ RR간기쌍사축향도상중건。초성심동도급MD-DSCT 채분별측량좌실사혈분수（LVEF）화주동맥판배직경（AVAD）。결과소유환자 MD-DSCT 검사평개관상동맥균획득량호효과。LVEF-2D여LVEF-MD-DSCT 유교강적상관성（ r ＝0．96，P ＜0．01）。AVAD-2D여AVAD-MD-DSCT 유교강적상관성（ r ＝0．91， P ＜0．01）。결론 MD-DSCT가이우술전일참식평개주동맥판협착환자적관상동맥、LVEF이급AVAD。
Objective The purpose of this study was to assess and compare coronary artery ,AVAD and LVEF of aortic stenosis patients using MinDose sequence of DSCT and 2D-TTE before operation .Methods Thirty-three patients suspec-ted for aortic valve disease underwent MD-DSCT to observe coronary artery ,AVAD and LVEF .Of MD-DSCT ,the full tube current time window was applied only 10% RR interval ,the minimal tube current (4% ) was used in all other parts of the cardiac cycle .Images were reconstructed at 70% of RR interval and analyzed by using double oblique reconstruction . Results In all 33 patients ,MinDose technique successfully evaluated coronary artery .There was a strong correlation be-tween LVEF-MD-DSCT and LVEF-2D ( r =0 .96 ,P <0 .01) .There was also a strong correlation between AVAD-MD-DSCT and AVAD-2D ( r =0 .91 ,P <0 .01) .The CTDIvol ,DLP ,as well as ED of the experimental group differed sig-nificantly from those of the control group ( P < 0 .01) .Conclusion As an one-stop preoperative evaluation ,MinDose-DSCT can comprehensively reflect the coronary ,AVAD and LVEF of aortic stenosis patients .