多层螺旋CT冠脉成像在心肌桥血管诊断中的应用价值

目的：通过多层螺旋CT冠脉成像技术（CTA）显示并评价心肌桥的物理特性，探讨其在心肌桥血管诊断中的临床应用价值。方法收集2008年6月-2013年6月间行多层螺旋CT冠状动脉成像502例患者的资料，评价心肌桥的部位、长度、厚度，MCA舒张期及收缩期管径大小、伴发的粥样斑块情况及心肌桥-壁冠状动脉解剖特点与粥样斑块的关系。结果502例行冠状动脉CTA及冠状动脉造影（CAG）患者，CTA发现心肌桥存在147例，检出率29.3%，CAG发现13例，检出率2.6%，两者间有差异。心肌桥的平均长度（32.10±9.25）mm，平均厚度（1.32±0.50）mm，心肌桥近段狭窄发生率高于壁段及远段冠状动脉狭窄发生率（P〈0.05）。结论多层螺旋CT冠脉成像技术可作为显示并评价心肌桥血管的首选方法，其安全、准确、无创性适于在临床推广应用。

The application value in diagnosis of myocardial bridge vessels by coronary imaging technology of multi-slice spiral CT

Objective Using Coronary imaging technology of multi-slice spiral CT to show and evaluate the physical charac-teristics of myocardial bridge,then discuss its clinical application value of the diagnosis in myocardial bridge vessels. Methods Data of multi-slice spiral CT coronary artery imaging from 502 patients was collected from June 2008 to June 2013 to evaluate the parts,length and thickness of MB,as well as MCA diastolic and systolic diameter size. In addition,the condition with atherosclero-sis plaque and relationship between anatomical features of MB-MCA and AS were analyzed. Results There were 502 patients ac-cepted coronary CTA and coronary artery angio-graphy. 147 cases with myocardial bridge were founded by CTA ,and the detection rate was 29.3%. The CAG found 13 cases and the detection rate was 2.6%. There was a significant difference between the two detecting methods. The average length of myocardial bridge was 32.10±9.25mm,the thickness was（1.32±0.50）mm on average. The incidence of proximal stenosis was higher than the wall side and the distal coronary artery stenosis（P〈0.05）. Conclusion Coronary imaging technology of multi-slice spiral CT could be the preferred method to clearly show and evaluate fMB-MCA ,it is propitious for clinical popularization and application.