【摘要】 目的探讨双源CT(DSCT)对冠状动脉斑块特征的评价作用。方法选取2013年5月至2015年5月在北京市昌平区中医医院心内科诊治的拟诊为冠心病的患者91例,均于入院3 d内行DSCT冠状动脉成像及冠状动脉血管内超声(IVUS)检查。观察DSCT对冠状动脉狭窄的显示情况,比较DSCT冠状动脉成像与IVUS的斑块成分、外弹力膜截面积、血管腔截面积、斑块负荷以及血管狭窄程度的差异。结果 DSCT共显示冠状动脉狭窄173处,以左前降支多发,中度及重度狭窄多见。DSCT冠状动脉成像共显示脂质斑块、纤维斑块及钙化斑块各52处、56处和46处,以IVUS为标准,DSCT冠状动脉成像对脂质斑块、纤维斑块及钙化斑块的诊断准确率为86.7%、91.8%、95.8%。DSCT冠状动脉成像与IVUS的外弹力膜截面积、血管腔截面积、斑块负荷以及血管狭窄程度比较差异无统计学意义(P>0.05)。结论 DSCT冠状动脉成像可以准确地显示冠状动脉狭窄、斑块特征。更多还原

【Abstract】 Objective To investigate the value of dual source CT( DSCT) in the evaluation of coronary plaque morphology and composition. Methods From May 2013 to May 2015,91 cases of patients with coronary heart disease in Beijing Changping District Chinese Medicine Hospital were included in the study,all underwent DSCT and coronary intravascular ultrasonography( IVUS) examination. The coronary artery stenosis was observed,the differences in the plaque composition,the cross-sectional area of the external elastic membrane,the area of blood vessel,the load of blood vessel and the degree of vascular stenosis in DSCT coronary artery imaging and IVUS were compared. Results DSCT showed a total of 173 coronary artery stenosis,and multiple,moderate and severe stenosis of the left anterior descending artery were frequently observed.DSCT coronary artery imaging showed 52,56 and 46 lipid plaques,fibrous plaques and calcified plaque,with IVUS as the standard,the diagnostic accuracy of DSCT coronary artery imaging for lipid plaque,fibrous plaque and calcified plaque was 86. 7%,91. 8%,95. 8% respectively. There was no significant difference in the area of the DSCT and IVUS in the coronary artery,in the area of the external elastic membrane,the area of vascular lumen,the plaque load and the degree of vascular stenosis( P > 0. 05). Conclusion DSCT coronary angiography can accurately display the coronary artery stenosis,plaque composition and plaque characteristics.更多还原