64排螺旋CT冠状动脉成像与冠状动脉造影对心肌桥诊断的比较研究

摘要

目的:比较64排螺旋CT冠状动脉成像(64 SCTCA)和冠状动脉造影(CAG)对心肌桥(MB)的诊断价值.方法:832例患者分别行64SCTCA扫描及CAG,观察有无MB及测量MB的长度、厚度、壁冠状动脉(MCA)狭窄程度等,并对结果进行对比研究.结果:64 SCTCA MB检出率为18.3％,CAG MB检出率为10.2％,两者比较差异有统计学意义(P＜0.05).64 SCTCA与CAG对MB的狭窄程度及长度比较,差异也有统计学意义(P＜0.05).结论:与CAG相比,64SCTCA对MB有较高的检出率,并能准确显示壁冠状动脉与心肌的解剖关系.%Objective To compare the clinical significance of 64-slice coronary CT angiography(64 SCTA) and conventional coronary angiography(CAG) for identification of myocardial bridge. Methods Eight hundred and thirty —two patients with suspected coronary artery disease underwent multi-detector row CT and conventional coronary angiography respectively.The prevalence, precise location, length, depth and concomitant atheromatous changes were evaluated. Results One hundred and sixty-five sites of MB were found in 152(18.3%, 152/832) of 832 patients with 64 SCTA, with MB detection rate of 10.2% by CAG, and the difference was statistically significant(P<0.05). There was also significant difference between 64 SCTCA and CAG for the degree and length of stenosis of the MB. Conclusion Compared with CAG, 64 SCTCA has a higher detection rate for MB, and can accurately show the relationship between mural coronary arteries and myocardial.