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南京医科大学学报(自然科学版) 第44卷第6期
·832 · Journal of Nanjing Medical University(Natural Sciences) 2024年6月
·临床研究·
CT肺小血管定量参数评估不同类型肺动脉高压的应用研究
徐承啸 ,张 月 ,张 宁 ,祝因苏 ,鲁珊珊 1*
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南京医科大学第一附属医院放射科,心血管内科,风湿科,江苏 南京 210029
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[摘 要] 目的:探讨基于胸部CT测量的肺小血管参数在评估肺动脉高压(pulmonary hypertension,PH)分型及结缔组织疾病
相关肺高压(connective tissue diseases⁃related pulmonary hypertension,CTD⁃PH)严重程度分级中的临床价值。方法:回顾性纳入
170例PH患者,包括60例CTD⁃PH患者、52例特发性PH(idiopathic pumonary hypertension,IPAH)患者和58例慢性阻塞性肺疾
病相关 PH(chronic obstructive pulmonary disease⁃rebated pulmonary hypertension,COPD⁃PH)患者,同时纳入 120 例健康受试者
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(health control,HC)作为对照。基于胸部CT测量横截面面积(cross⁃sectional area,CSA)<5 mm 的肺小血管CSA之和及CSA 5~
10 mm 的肺小血管 CSA 之和与肺总 CSA 的比率(%CSA<5和%CSA5-10),采用单因素方差分析或 Kruskal⁃Wallis 检验比较 4 组之
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间%CSA<5和%CSA5-10的差异,并进行组间两两比较。采用受试者工作特征(receiver operating characteristic,ROC)曲线分析%
CSA区分重度CTD⁃PH(CTD⁃S⁃PH组)和中重度CTD⁃PH(CTD⁃LM⁃PH组)的能力,计算曲线下面积(area under curve,AUC)、灵
敏度及特异度。结果:与HC组比较,IPAH组和COPD⁃PH组的%CSA<5均小于HC组(P均<0.001),COPD⁃PH组的%CSA5⁃10低于
HC组(P=0.038),而CTD⁃PH和IPAH组的%CSA5-10均显著高于HC组(P均< 0.05)。不同类型PH组间比较,CTD⁃PH的%CSA<5
和%CSA5⁃10均高于 COPD⁃PH 组(P 均<0.001),IPAH 组的%CSA5⁃10显著高于 CTD⁃PH 组(P=0.022),而 IPAH 和 COPD⁃PH 组的%
CSA<5差异无统计学意义(P= 0.833)。CTD⁃S⁃PH 组患者的%CSA<5显著低于 CTD⁃LM⁃PH 组(P=0.004)。ROC 曲线分析结果
显示,%CSA<5预测 CTD⁃S⁃PH的最佳截断值为0.804,AUC为0.710(95%CI:0.573~0.847),灵敏度为0.714,特异度为0.320。结
论:基于胸部CT定量的肺小血管参数%CSA可以区分不同类型PH。在CTD⁃PH人群中,%CSA<5可作为评估PH严重程度分级
的参考依据。
[关键词] 肺动脉高压;肺小血管;胸部CT;分型;严重程度
[中图分类号] R544.16 [文献标志码] A [文章编号] 1007⁃4368(2024)06⁃832⁃06
doi:10.7655/NYDXBNSN231111
Application study of quantitative parameters of small pulmonary vessels on CT in
evaluating different types of pulmonary hypertension
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XU Chengxiao ,ZHANG Yue ,ZHANG Ning ,ZHU Yinsu ,LU Shanshan 1*
Department of Radiology,Department of Cardiology,Department of Rheumatology,the First Affiliated Hospital of
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Nanjing Medical University,Nanjing,210029,China
[Abstract] Objective:To investigate the clinical value of small pulmonary vessels parameters measured by chest CT in evaluating
the classification of different types of pulmonary hypertension(PH)and the severity grading of connective tissue disease s ⁃ related
pulmonary hypertension(CTD⁃PH). Methods:A retrospective analysis included 170 PH patients,including 60 CTD⁃PH patients,52
idiopathic PH(IPAH)patients,and 58 chronic obstructive pulmonary disease ⁃ related PH(COPD ⁃ PH)patients,with 120 healthy
controls(HC)included as controls. The ratio of the sum of the cross⁃sectional area(CSA)of small pulmonary vessels with CSA <5 mm 2
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(%CSA<5)and between 5 to 10 mm(%CSA5- 10)to the total CSA of the lung measured by chest CT was compared among the four
groups using one⁃way ANOVA or Kruskal⁃Wallis test,followed by pairwise comparisons. Receiver operating characteristic(ROC)curve
analysis was used to evaluate the performance of %CSA for differentiating mild to moderate CTD⁃PH(CTD⁃LM⁃PH)from severe CTD⁃
PH(CTD⁃S⁃PH)patients,and calculate the area under the curve(AUC),sensitivity and specificity. Results:The %CSA<5 of the IPAH
and COPD⁃PH groups were significantly lower compared to the HC group(P < 0.001). Additionally,the %CSA5 ⁃ 10 of the COPD⁃PH
[基金项目] 国家自然科学基金(82171907)
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通信作者(Corresponding author),E⁃mail:shanshanlu@njmu.edu.cn