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

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64 SCTCA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。

Diagnosis Comparison of Myocardial Bridge by 64-slice CT Coronary Angiography and Conventional Coronary Angiography

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.