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CT冠状动脉成像半自动化测量非钙化斑块的可重复性研究 被引量:1

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摘要 目的探讨CT冠状动脉成像(CCTA)半自动化测量软件检测非钙化斑块的可重复性。方法连续入选初次CCTA结果为单支局限性非钙化为主斑块病变的患者。由两名医师分别测量斑块,其中一名医师于不同时间再次测量斑块。配对样本t检验用于读者内和读者间斑块测量数据的比较。用Pearson相关分析和Bland-Altman检验探讨读者内及读者间测量结果的相关性和一致性。结果研究共纳入62例患者。读者内两次测量斑块体积的均数为(78.1±46.7)mm3,差值的均数为(0.1±3.2)mm3,95%一致性界限为-6.2~6.4 mm3,两次测量结果的相关系数为0.998(P<0.001)。读者间测量斑块体积的均数为(78.0±47.2)mm3,差值的均数为(0.9±4.8)mm3,95%一致性界限为-8.5~10.3 mm3,两者测量结果的相关系数为0.995(P<0.001)。读者内两次测量斑块体积百分比的均数为(45.1±12.1)%,差值的均数为-(0.3±2.2)%,95%一致性界限为-4.6%~4.0%,两次测量结果的相关系数为0.984(P<0.001)。读者间测量斑块体积百分比的均数为(45.4±12.1)%,差值的均数为-(0.4±2.3)%,95%一致性界限为-4.9%~4.1%,两者测量结果的相关系数为0.982(P<0.001)。结论 CCTA半自动化测量软件检测非钙化斑块的可重复性好,可用于检测斑块负荷和评价药物干预斑块进展等研究。
机构地区 北京协和医学院
出处 《中华临床医师杂志(电子版)》 CAS 2016年第13期2010-2014,共5页 Chinese Journal of Clinicians(Electronic Edition)
基金 首都卫生发展科研专项项目(2011-4003-01)
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