ArticleBMC cancer2026
Habitat model based on CEUS for noninvasive prediction of EGFR mutation status in peripheral NSCLC.
Article in BMC cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundTo develop and validate a contrast-enhanced ultrasound (CEUS)-based habitat model for noninvasive prediction of epidermal growth factor receptor (EGFR) mutation status in patients with peripheral non-small cell lung cancer (NSCLC).
methodsThis retrospective study included 187 patients with NSCLC confirmed by histopathology from April 2021 to February 2025. All patients underwent CEUS of the lung before biopsy. Patients for whom complete EGFR gene testing results were available were randomly divided into a training set and a test set at a ratio of 8:2. Habitat imaging was used to differentiate the tumor into distinct regions, and then an unsupervised clustering method was used to extract and analyze habitat features to establish Habitat_Model. The Shapley additive explanations (SHAP) method was used to improve the interpretability of the model. In addition, Rad_Model based on radiomics features of tumors was constructed. Finally, a combined model was established by combining the habitat features and clinical-radiological indicators with logistic regression analysis. The predictive performance was evaluated using receiver operating characteristic curve (ROC), calibration, and decision curve analysis (DCA).
resultsThe areas under the curve (AUCs) of Habitat_Model and Rad_Model were 0.898 and 0.857 in the training set, and 0.784 and 0.649 in the testing set, respectively. Habitat_Model showed excellent performance. Incorporating clinical-radiological indicators via the combined model slightly improved its performance, resulting in AUC values of 0.904 and 0.812 for the training and testing sets, respectively. The calibration curves and DCA exhibited excellent fit for the combined model, while providing great clinical net benefit.
conclusionsOur habitat model demonstrates a good capacity for predicting EGFR mutation status in peripheral NSCLC, providing valuable noninvasive reference for clinical pathways on targeted therapy.
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