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目的:探讨64排探测器CT(MDCT)对心肌桥伴冠心病的诊断价值及临床意义。方法:对217例拟诊冠心病(CAD)患者行64MDCT冠状动脉血管成像(CCTA),根据CCTA上冠状动脉的走行部位,诊断47例心肌桥,测量心肌桥的长度、厚度,分析各支粥样斑块性质和狭窄程度,判断血管硬化与心肌桥的关系。结果:64MDCTA发现心肌桥51处/47例,检出率为21.66%;34例位于左前降支中段(66.67%),肌桥长度为5.6～27.6mm;厚度为0.52～4.8mm;其中22例伴有不同程度的粥样硬化斑块,管腔狭窄<50%者19例。结论:64MDCT冠脉成像可无创性检出心肌桥,显示其MDCT表现特点、邻近血管硬化狭窄等,可为临床治疗提供有价值的信息。
Objective: To investigate the diagnostic value and clinical significance of 64-detector CT (MDCT) for myocardial bridge with coronary heart disease. Methods: A total of 217 patients with CAD diagnosed underwent 64-MDCT coronary angiography (CCTA). According to the location of coronary artery in CCTA, 47 patients with myocardial bridge were diagnosed. The length and thickness of myocardial bridge were measured. The nature of plaque and the degree of stenosis, to determine the relationship between vascular sclerosis and myocardial bridge. Results: 64 MCDCTA found 51/47 myocardial bridge, the detection rate was 21.66%; 34 cases were located in the middle part of the left anterior descending branch (66.67%), the length of the muscle bridge was 5.6 ~ 27.6mm; the thickness was 0.52 ~ 4.8mm; Accompanied by varying degrees of atherosclerotic plaque, lumen stenosis <50% in 19 cases. Conclusion: 64MDCT coronary angiography can detect the myocardial bridge noninvasively, which shows the features of MDCT and the adjacent vascular sclerosis. It can provide valuable information for clinical treatment.