心肌桥-壁冠状动脉256层CT 冠状动脉成像表现  

Imaging findings of the myocardial bridge-mural coronary artery with 256-slice coronary CT angiography

作　　者：裘晟[1] 姚果林 杨小军[1] 霍蛟 陈向飞[1] 高艳妮[1] 王飞[1] 杨欢[1] 张静[1] 杨俊亚[1] 冯斌[1] 白亚运 姚晓群[1] 杨广夫[1] 

机构地区：[1]西安交通大学附属西安高新医院影像科,陕西西安710075

出　　处：《实用放射学杂志》2015年第5期744-747,共4页Journal of Practical Radiology

基　　金：西安市卫生局科研项目（2013073）.

摘　　要：目的：研究心肌桥-壁冠状动脉256层 CT 冠状动脉成像表现。方法从本院256层 CT 冠状动脉成像诊断心肌桥-壁冠状动脉335例患者中,选取资料完整患者189例,由2名作者独立观察 CT 冠状动脉心肌桥-壁冠状动脉的影像表现,测量心肌桥-壁冠状动脉的有关数据,使用 SPSS13.0软件统计处理,以 P〈0.05为差异有显著性。结果心肌桥-壁冠状动脉在 CT 冠状动脉成像检查的发生率为8.11%（335/4129例）,其多见于左冠状动脉前降支（156/196支,79.59%）,壁冠状动脉平均长（23.24±10.32）mm,平均直径在心脏收缩末期为（2.21±0.73）mm,在舒张末期为（2.35±0.76）mm（t=3.140,P=0.005）。心肌桥厚（1.44±1.31）mm,在回顾性心电门控心脏收缩期壁血管面积变窄率为24.62%。189例心肌桥-壁冠状动脉中发现单纯心肌桥-壁冠状动脉100例（52.91%）,合并冠状动脉硬化斑块89例（47.09%）,其中发生在同一支冠状动脉者74例（83.15%）。结论心肌桥-壁冠状动脉是一种由冠状动脉变异引起的潜隐性心脏疾病,冠状动脉成像对该病诊断有重要作用。Objective To study the imaging findings of myocardial bridge-mural coronary artery （MBMCA）using 256-slice coronary CT angiography （CTA）.Methods 335 patients with MBMCA were diagnosed in our hospital,189 of whom with complete data were collected.The image findings of the MBMCA on 256-slice coronary CTA were reviewed,and the related measurements were done by two independent radiologists.A statistical software （SPSS13.0）was used and P〈0.05 was regarded as significant difference.Results The incidence of MBMCA was 8.1 1% on 256-slice coronary CTA.Most MBMCAs were seen in the left anterior descending artery （LAD）（79.59%）with mean length of （23.24±10.32）mm.The mean diameter of MBMCA was （2.21±0.73）mm on later systol phase and （2.35±0.76）mm on later distol phase （t=3.140,P =0.005）.The thickness of myocardial bridge was （1.44 ±1.31）mm.The average area change from systol phase to distole phase was decreased by 24.62% on retrospective electrocardiogating coronary CTA. Among the 189 patients,only MBMCA was diagnosed in 100,and MBMCA in combination with coronary atherosclerosis was in 89. The MBMCA and coronary atherosclerosis were found in the same artery in 74.Conclusion Myocardial bridge-mural coronary artery is a poten-tial heart disease because of artery abnormality.Coronary CT angiography palys an important role in diagnosis of this disease.

关 键 词：冠状动脉 心肌桥-壁冠状动脉 计算机体层成像 冠状动脉硬化 

分 类 号：R322.12[医药卫生—人体解剖和组织胚胎学] R814.42[医药卫生—基础医学]