吉林大学学报(医学版) ›› 2026, Vol. 52 ›› Issue (4): 1151-1160.doi: 10.13481/j.1671-587X.20260428

• 影像学 • 上一篇    

CT影像组学联合临床影像学特征评估混合磨玻璃结节样肺腺癌的浸润性

史鸿宇1,徐磊1(),赵磊2   

  1. 1.内蒙古医科大学附属医院呼吸与危重症学科,内蒙古 呼和浩特 010050
    2.内蒙古医科大学附属 医院影像诊断科,内蒙古 呼和浩特 010050
  • 收稿日期:2025-10-30 接受日期:2025-12-23 出版日期:2026-07-28 发布日期:2026-07-27
  • 通讯作者: 徐磊 E-mail:lxu81@126.com
  • 作者简介:史鸿宇(1999—),女,内蒙古自治区呼和浩特市人,住院医师,医学硕士,主要从事肺结节和肺血管基础及临床方面的研究。
  • 基金资助:
    内蒙古自治区科技厅自然科学基金项目(2023MS08014);内蒙古医学科学院重点项目(2024GLLH0291);内蒙古自治区科技计划项目(2022YFSH0092);内蒙古自治区卫生健康科技计划项目(202201335)

Evaluation of CT radiomics combined with clinical imaging features on invasiveness of mixed ground-glass nodule-like pulmonary adenocarcinoma

Hongyu SHI1,Lei XU1(),Lei ZHAO2   

  1. 1.Department of Respiratory and Critical Care Medicine,Affiliated Hospital,Inner Mongolia Medical University,Hohhot 010050,China
    2.Department of Diagnostic Imaging,Affiliated Hospital,Inner Mongolia Medical University,Hohhot 010050,China
  • Received:2025-10-30 Accepted:2025-12-23 Online:2026-07-28 Published:2026-07-27
  • Contact: Lei XU E-mail:lxu81@126.com

摘要:

目的 探讨混合磨玻璃结节(mGGN)样肺腺癌浸润性的影像学危险因素,构建临床影像特征联合影像组学的机器学习模型,阐明其诊断效能。 方法 回顾性收集术后病理明确的mGGN样肺腺癌患者261例,符合纳入标准的mGGN共278枚,根据病理结果分为惰性组(n=73)和浸润组(n=205)。收集2组患者临床资料和影像学资料。所有患者接受薄层计算机断层扫描(CT)扫描,提取影像组学特征,通过z.score标准化联合LASSO回归对数据进行特征降维,并利用10折交叉完成筛选,确定最优组学特征,构建逻辑回归(LR)机器学习算法的影像组学模型;采用单因素分析和多因素Logistic回归分析筛选mGGN样肺腺癌患者浸润性有意义的影像学特征,联合最优组学特征绘制列线图,使用受试者工作特征(ROC)曲线下面积(AUC)、校准曲线和临床决策曲线(DCA)评估模型预测性能。采用自抽样进行模型验证。 结果 纳入的278例mGGN中,共计205例患者经病理结果证实为浸润性mGGN样肺腺癌。与惰性组比较,浸润组患者提取出的影像组学中最大三维(3D)直径、第90百分位数、逆差距归一和表面积与体积比为相关最优组学特征。单因素Logistic分析,浸润组患者中毛刺征、分叶征、支气管充气征、胸膜凹陷征、棘状突起、长径、短径和平均CT值的发生率高于惰性组(P<0.05)。多因素Logistic回归分析,分叶征与分组风险显著相关[比值比(OR)=3.724,95%置信区间(CI):1.373~10.100,P=0.010];长径每增加1 mm,分组风险增加31.8%(OR=1.318,95%CI:1.152~1.509,P<0.001);平均CT值每升高1 HU,浸润性风险增加0.6%(OR=1.006,95%CI:1.003~1.009,P<0.001)。结合分叶征、结节长径、平均CT值及影像组学评分构建的融合列线图AUC为0.858(95%CI:0.813~0.914),自模型校正后一致性指数(C-index)为0.835。DCA曲线显示模型具有较好的临床适用性。Hosmer-Lemeshow检验,列线图具有较好的拟合度。 结论 分叶征、结节长径和平均CT值为mGGN样肺腺癌浸润性的危险因素,融合列线图对于mGGN样肺腺癌浸润性具有较好的诊断效能,可能为临床提供无创诊断和个体化治疗提供新方法。

关键词: 混合磨玻璃结节, 肺腺肿瘤, 肺癌早筛, 影像组学, 危险因素, 风险预测模型

Abstract:

Objective To discuss the imaging risk factors for invasiveness of mixed ground-glass nodule (mGGN)-like pulmonary adenocarcinoma, to construct a machine learning model combining clinical imaging features and radiomics, and to clarify its diagnostic efficacy. Methods A total of 261 patients with postoperative pathologically confirmed mGGN-like pulmonary adenocarcinoma were retrospectively collected, and 278 mGGNs met the inclusion criteria. According to the pathological results, they were divided into indolent group (n=73) and invasive group (n=205). The clinical data and imaging data of the patients in two groups were collected. All the patients underwent thin-slicecomputed tomography(CT) scanning; radiomic features were extracted. Feature dimensionality reduction was performed on the data via Z-score standardization combined with LASSO regression, and a 10-fold cross-validation was adopted to complete the screening process. The optimal omics features were identified, and a radiomics model based on the machine learning algorithm of Logistic Regression (LR) was constructed. Univariate and multivariate logistic regression analyses were used to identify the imaging features with significance for invasiveness of mGGN-like pulmonary adenocarcinoma; nomogram was drawn by combining the optimal radiomic features; the area under the receiver operating characteristic (ROC) curve (AUC), calibration curve, and decision curve analysis (DCA) were used to evaluate the predictive performance of the model. Bootstrap method was used for model validation. Results Among the 278 included mGGNs, a total of 205 patients were pathologically confirmed as invasive mGGN-like pulmonary adenocarcinoma. Compared with indolent group, the optimal radiomic features extracted from the patients in invasive group included maximum three dimension(3D) diameter, the 90th percentile, inverse difference moment normalized, and surface area to volume ratio. The univariate Logistic analysis results showed that the incidences of spiculation, lobulation, air bronchogram sign, pleural indentation sign, spinous process, long diameter, short diameter, and mean CT value in the patients in invasive group were higher than those in indolent group (P<0.05). The multivariate Logistic regression analysis results showed that lobulation was significantly associated with the risk of group classification [odds ratio(OR)=3.724, 95% confidence interval(CI): 1.373-10.100, P=0.010]; for every 1 mm increase in long diameter, the risk of group classification was increased by 31.8% (OR=1.318, 95%CI: 1.152-1.509, P<0.001); for every 1 HU increase in mean CT value, the risk of invasive carcinoma was increased by 0.6% (OR=1.006, 95%CI: 1.003-1.009, P<0.001). The AUC of the fusion nomogram constructed by combining lobulation, nodule long diameter, mean CT value and radiomics score was 0.858 (95%CI: 0.813-0.914), and the bootstrap concordance index (C-index) of model was 0.835. The DCA curve results showed that the model had good clinical applicability. The Hosmer-Lemeshow test results showed that the nomogram had a good fit. Conclusion Lobulation, nodule long diameter and mean CT value are the risk factors for invasiveness of mGGN-like pulmonary adenocarcinoma. The fusion nomogram has good diagnostic efficacy for invasiveness of mGGN-like pulmonary adenocarcinoma, and may provide a new method for non-invasive diagnosis and individualized treatment in clinical practice.

Key words: Mixed ground-glass nodules, Lung neoplasm, Early screening for lung cancer, Radiomics, Risk factor, Risk prediction model

中图分类号: 

  • R734.2