ArticleBMC oral health2026
Deep learning radiomics based on multimodal MRI for preoperative prediction of N stage in tongue squamous cell carcinoma: a multicenter study.
Article in BMC oral health, 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
backgroundPreoperative discrimination between early (N0/N1) and advanced (N2/N3) nodal stages is critical for treatment planning in tongue squamous cell carcinoma (TSCC) due to its well-established impact on prognosis. Nevertheless, conventional imaging techniques show limited accuracy in staging precision. To address this gap, we developed and validated a Deep Learning Radiomics (DLR) model utilizing multimodal MRI, with the goal of enhancing preoperative staging reliability and supporting clinical decision-making in oral oncology.
methodsA total of 579 patients with TSCC from two independent centers were enrolled. Patients from Center 1 were randomly split into training (n = 357) and internal test (n = 153) sets, while patients from Center 2 formed an external test set (n = 69). Handcrafted radiomic features were extracted from primary tumor volumes on contrast-enhanced T1-weighted and T2-weighted images. Concurrently, deep learning features were extracted from the maximum cross-sectional region of interest using three convolutional neural networks (ResNet34, ResNet101, DenseNet121). These features were integrated to build the DLR models. Model performance was evaluated by the area under the receiver operating characteristic curve (AUC), with comparisons made using DeLong’s test. Calibration and decision curve analysis were also employed.
resultsResNet34 DLR model achieved optimal performance, with AUC values of 0.811 (95% CI: 0.76–0.860), 0.806 (95% CI: 0.709–0.903), and 0.807 (95% CI: 0.684–0.931) in the training, internal validation and external test sets, respectively. It significantly outperformed the conventional radiomics model in both the training and internal validation cohorts (all p < 0.05). Models based on ResNet101 and DenseNet121 also consistently surpassed the radiomics baseline across all datasets.
conclusionThe proposed DLR approach outperformed conventional radiomics in preoperative prediction of nodal stages in TSCC, demonstrating superior diagnostic potential based on multimodal MRI. This method may offer a non-invasive decision-support tool for individualized treatment planning in oral oncology, although further prospective validation is warranted.
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