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目的探讨多排螺旋CT(MSCT)冠状动脉(冠脉)成像对心肌桥的诊断价值,分析心肌桥与心肌缺血的相关性。方法回顾156例心肌桥患者的影像及心电图资料,分析心电图正常组和心肌缺血组的心肌桥厚度、壁冠脉长度及狭窄率。结果冠脉成像检出156例共234处心肌桥。单支单发97处,单支多发44例89处,多支多发15例48处。其中位于左前降支152处,右冠脉58处,其他冠脉分支24处。心电图心肌缺血56例,其余100例正常。两组心肌桥厚度及壁冠脉狭窄率差异有统计学意义(P<0.05);而壁冠脉长度差异无统计学意义(P>0.05)。结论 MSCT冠脉成像能够准确地诊断心肌桥,心肌缺血与心肌桥厚度及壁冠脉的狭窄率相关,与壁冠脉的长度无关。
Objective To investigate the diagnostic value of multislice spiral CT (MSCT) coronary artery (myocardial) imaging in myocardial bridge and to analyze the relationship between myocardial bridge and myocardial ischemia. Methods The images and ECG data of 156 patients with myocardial bridge were retrospectively analyzed. The thickness of myocardial bridge, the length of coronary wall and the stenosis rate of myocardial ischemia group were analyzed. Results Coronary angiography detected a total of 156 myocardial bridges in 234 patients. Single single-shot 97, 44 single-shot in 89 cases, multiple in 15 cases in 48 cases. Which is located at the left anterior descending artery 152, at the right coronary artery 58, at other coronary branches 24. 56 cases of myocardial ischemia in ECG, the remaining 100 cases were normal. There was significant difference between the two groups in the thickness of myocardial bridge and the rate of wall coronary artery stenosis (P <0.05), while there was no significant difference in the length of wall coronary artery (P> 0.05). Conclusion MSCT coronary angiography can accurately diagnose myocardial bridge. The relationship between myocardial ischemia and myocardial bridge thickness and stenosis of wall coronary artery is not related to the length of wall coronary artery.