【摘要】 目的:比较冠状动脉CT血管成像(CTA)与血管内超声(IVUS)诊断冠状动脉钙化病变的效果。方法:选择经我院临床诊断为冠心病或疑似冠心病患者50例为研究对象,所有患者均行冠状动脉CTA、IVUS检查,观察冠状动脉斑块特征、不同类型斑块CT值,以血管内超声为对照,评估冠状动脉CTA诊断效果。结果:两种检测方法在斑块面积、斑块负荷、管腔面积方面比较差异无统计学意义;钙化斑块CT值明显高于纤维斑块和脂质斑块[(725.68±68.42)Hu比(58.12±7.05)Hu、(60.21±6.78)Hu,P均<0.01];冠状动脉CTA诊断钙化斑块灵敏度、特异性、准确性、阳性预测值、阴性预测值分别为92.86%、92.86%、92.86%、81.25%、97.50%。结论:冠状动脉CT血管成像在冠状动脉钙化病变定性定量检测中,具有较高的诊断效果,可以作为筛查的首选方法。更多还原

【Abstract】 Objective:To compare diagnostic effect between coronary CT angiography(CTA)and intravascular ultrasound(IVUS)for coronary calcified lesion.Methods:A total of 50 patients,who were diagnosed as coronary heart disease(CHD)or suspected CHD in our hospital,were selected.All patients received coronary CTA and IVUS examination.Characteristics of coronary artery plaques and CT values of different types of plaques were observed,coronary CTA diagnostic effect was evaluated according IVUS as control.Results:There were no significant difference between two methods in plaque area,plaque burden and lumen area;CT value of calcified plaques was significantly higher than those of fibrous plaques and fatty plaques[(725.68±68.42)Hu vs.(58.12±7.05)Hu,(60.21±6.78)Hu,P<0.01both];Sensitivity,specificity,accuracy,positive predictive value and negative predictive value of coronary CTA for diagnosing calcified plaques were 92.86%,92.86%,92.86%,81.25% and 97.50%respectively.Conclusion:Coronary CT angiography possesses higher diagnostic effect for qualitative and quantitative detection of coronary calcified lesions,which can be regarded as a preferred screening method.更多还原