64排螺旋CT对冠状动脉心肌桥的诊断价值

目的探讨64排螺旋CT冠状动脉成像（CCTA）对壁冠状动脉-心肌桥的诊断价值。方法共416例CCTA纳入本研究,观察有无心肌桥的发生,并测量壁冠状动脉的深度、长度、直径。结果 85例病人发现有心肌桥,CCTA心肌桥发现率为20.4%（85/416）。冠状动脉心肌桥平均发病年龄为56.3±14.2岁。男性发病率为24.5%（63/257）,女性为13.8%（22/159）。发生率最高的血管为前降支（LAD）,并且87.3%的壁冠状动脉位置浅表,6.7%的桥血管伴有动脉粥样硬化斑块。结论心肌桥的CCTA检出率明显高于传统冠状动脉造影,本次研究没有证明心肌桥与心血管事件存在相互关系。

Diagnostic Value of 64 Multi-detector Spiral CT Angiography on Myocardial Bridge and Mural Coronary Artery

Objective To investigate the diagnostic value of 64 MSCT angiography in determining Myocardial Bridge（MB） and Mural Coronary Artery（MCA）. Methods 416 patients were performed with ECG-gated CCTA by 64 MSCT scanner. The presence of MB and the deepth, lenghth and diametre of intramural coronary artery in CCTA images were evaluated and recorded. Results The detection rate of MB was 20.4%（85/416）. The detection rate of MB was 24.5%（63/257） in male patients and 13.8%（22/159） in female patients. The detection rate of MB by CCTA was 20.4% in this study. The most common location of MB was in the LAD, and 83.7% of the intramural coronary artery are located in the shalow part. Atherosclerotic plaques were found in 6.7% of MB cases. Conclusion Conclusion Myocardial bridge detection rate of CCTA was significantly higher than that of conventional coronary angiography. And the study does not prove any relationship between myocardial bridge and cardiovascular events.