左前降支心肌桥的多层CT研究  

Study on the Myocardial Bridge of the Left Anterior Descending Artery with Multi-slice CT

作　　者：杨斌[1] 高炎[2] 俞一歆[1] 陈文辉[1] 张邢炜[3] 童国新[2] 杨建敏[2] 

机构地区：[1]杭州市第一人民医院放射科,浙江杭州310006 [2]杭州市第一人民医院心内科,浙江杭州310006 [3]杭州市第二人民医院心内科

出　　处：《实用放射学杂志》2008年第10期1345-1348,共4页Journal of Practical Radiology

基　　金：杭州市医学重点专科专病项目(编号:2006533Q04)

摘　　要：目的探讨左前降支心肌桥的形态特征及其与右心室的关系。方法178例临床疑诊冠心病者行16层CT冠状动脉造影。测量左前降支壁冠状动脉的长度、深度及其与右心室的间距,记录壁冠状动脉的行程,分析其壁冠状动脉的深度及走行方向与右心室的关系。结果40例心肌桥中,位于左前降支44处。壁冠状动脉至右心室间距<1.0mm组中,壁冠状动脉深度≥1.0mm、<1.0mm的比例分别为63.16%,36.84%;壁冠状动脉至右心室间距≥1.0mm组,壁冠状动脉深度≥1.0mm、<1.0mm的比例分别为32%,68%。2组中壁冠状动脉深度有显著差异。11处(57.89%,11/19)壁冠状动脉走行向右心室偏曲,且与右心室间距<1.0mm。结论左前降支心肌桥患者,壁冠状动脉至右心室间距取决于其壁冠状动脉的深度及其走行方向。MSCT可以定量评价心肌桥的形态特征,对其手术和介入治疗有潜在应用价值。Objective To investigate the morphological features of myocardial bridge of the left anterior descending artery and the relationship with right ventricle.Methods 178 cases of suspected coronary heart disease underwent MSCT coronary angiography. The length and depth of mural coronary artery of the left anterior descending artery, and the distance from it to right ventricle were registered. The relationship between depth,course of mural coronary artery and right ventricle were analysed.Results 44 sites of myocardial bridge in the left anterior descending artery in 40 patients were detected. In the group with distance 〈1.0 mm from mural coronary artery to right ventricle, the ratio of mural coronary artery with depth≥1.0 mm and 〈1.0 mm were 63.16% and 36.84%,respectively,and in another group with distance ≥1.0 mm,those were 32%and 68%,respectively. The depth of mural coronary was significant difference in the two groups. Tortuousness of mural coronary artery was demonstrated in 11 sites in the group with distance 〈1.0 mm.Conclusion To myocardial bridge of the left anterior descending artery, the distances from mural coronary to right ventricle are dependended on the depth and course of mural coronary artery. The morphological features of myocardial bridge can be quantified with MSCT. It may be potential usefulness in surgery and coronary stenting.

关 键 词：心肌桥 壁冠状动脉 右心室 体层摄影术 X线计算机 

分 类 号：R322.121[医药卫生—人体解剖和组织胚胎学] R814.42[医药卫生—基础医学]