冠状动脉CT血管成像定量分析在诊断冠状动脉血流动力学异常中的价值  被引量:51

Non-invasive quantitative plaque analysis by coronary CT angiography in predicting coronary hemodynamic significance

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作  者:窦冠华 杨俊杰[1] 单冬凯[1] 何柏[1] 荆晶[1] 金琴花[1] 陈韵岱[1] Dou Guanhua;Yang Junjie;Shah Dongkai;He Bai;Jing Jing;Jin Qinhua;Chen Yundai(Department of Cardiology,PLA General Hospital,Beijing 100853,China)

机构地区:[1]解放军总医院心血管内科,北京100853

出  处:《中华放射学杂志》2018年第9期660-667,共8页Chinese Journal of Radiology

基  金:国家重点研发计划课题(2016YFC1300304);北京市科技新星计划(Z181100006218055)

摘  要:目的使用冠状动脉CT血管成像(CCTA)定量技术分析冠状动脉狭窄程度、斑块成分及易损斑块特征,并评价其诊断冠状动脉血流动力学异常的价值。 方法回顾性分析2013年3月至2017年3月于解放军总医院心内科依次行CCTA检查和血流储备分数(FFR)检查的115例冠心病患者。共入选151支靶血管,54支血管(54例患者)存在明确血流动力学异常(35.76%)。将靶血管按FFR≤0.8和FFR〉0.8分为血流动力学异常组(n=54)和正常组(n=97)。应用半自动化斑块分析软件定量分析CCTA图像,测量管腔狭窄、斑块负荷与斑块成分等指标并比较上述指标在两组间的差异。运用t检验、Wilcoxon秩和检验或χ2检验比较组间指标的差异是否具有统计学意义,采用多因素logistic回归分析冠状动脉血流动力学异常的影响因素,最后采用DeLong检验两两比较相关指标的ROC曲线下面积,评估相关指标在诊断冠状动脉血流动力学异常方面的价值。结果在管腔狭窄定量指标方面,血流动力学异常组的最小管腔直径(MLD)、最大直径狭窄率(MDS%)、最小管腔面积(MLA)和最大面积狭窄率(MAS%)分别为1.24(1.04,1.46)mm、65.04%±8.20%、3.61(2.40,4.80)mm2、73.91%±7.58%,血流动力学正常组的相应指标分别为1.53(1.32,1.72)mm、58.27%±9.50%、5.28(4.00,6.40)mm2、64.83%±8.31%,差异有统计学意义(Z=-4.82,P〈0.01;t=4.41,P〈0.01;Z=-5.40,P〈0.01;Z=6.63,P〈0.01)。在斑块成分定量指标方面,血流动力学异常组的斑块总负荷(TPB)、斑块钙化成分负荷(CPB)、斑块脂质成分负荷(LPB)、斑块钙化成分体积(CPV)和斑块脂质成分体积(LPV)分别为57.96%±11.17%、4.32%(0.11%,5.34%)、14.89%(9.30%,19.23%)、30.68(0.29,33.36)mm3、81.72(33.92,94.68)mm3,血流动力学正常组的相应指标分别为53.88%±11.77%、2.05%(0.00%�ObjectiveTo evaluate the diagnostic performance of the automated quantitative analysis by coronary computed tomography angiography (CCTA) for lesion specific hemodynamic significance assessed by fractional flow reserve (FFR) .MethodsOne hundred and fifteen patients with one hundred and fifty-one vessels,who successively underwent invasive coronary angiography with evaluation of FFR(values≤0.8 were defined as lesion specific hemodynamically significant),were analyzed by coronary CT angiography. FFR≤0.80 was found in 54(35.76%) of the 151 vessels, which was divided into two groups (group of hemodynamically significant and group of hemodynamically non-significant). CCTA images were quantitatively analyzed with automated software to obtain the following index: minimal lumen diameter(MLD), maximum diameter stenosis(MDS%), minimal lumen area(MLA), maximum area stenosis(MAS%), lesion length(LL), total plaque volume(TPV), total plaque burden(TPB),calcified plaque volume(CPV),calcified plaque burden(CPB), non-calcified plaque volume(NCPV),non-calcified plaque burden(NCPB), lipid plaque volume(LPV), lipid plaque burden(LPB), fibrous plaque volume(FPV), fibrous plaque burden(FPB), napkin-ring sign(NRS), remodeling index(RI) and eccentric index(EI). Logistic regression and area under the receiver operating characteristics were used for statistical analysis.ResultsMDS% (65.04%±8.20%), MAS% (73.91%±7.58%), TPB(57.96%±11.17%), CPB[4.32%(0.11%, 5.34%)], LPB[14.89%(9.30%, 19.23%)], CPV[30.68 (0.29, 33.36)mm3], LPV[(81.72(33.92, 94.68)mm3]in the group with hemodynamic significance were larger than those in group with normal hemodynamic status[58.27%±9.50%, 64.83%±8.31%, 53.88%±11.77%, 2.05%(0.00%,3.42%), 11.83%(6.34%,16.8%), 12.53(0.00,13.24)mm3, 60.71(24.1,75.11)mm3, respectively], which was statistically significant(t=4.41,P〈0.01;Z=6.63,P〈0.01;t=2.08,P〈0.05;Z=-2.47,P〈0.01

关 键 词:冠状动脉疾病 血流动力学 体层摄影术 X线计算机 

分 类 号:R541.4[医药卫生—心血管疾病] R816.2[医药卫生—内科学]

 

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