Computed tomography multi-phase radiomics models for differentiating benign and malignant thyroid nodules
In brief
Combined CT features distinguished thyroid cancers with 86% external-test accuracy
In an external validation group, a model combining clinical details, conventional CT signs, and radiomics features had an area under the curve of 0.865, with 74% sensitivity and 84.5% specificity for distinguishing benign from malignant thyroid nodules. It outperformed radiomics alone, but the retrospective study included surgically confirmed nodules, so performance in broader groups with incidental findings remains uncertain.
- Journal
- Frontiers in endocrinology (Q1)
- Published
- 15 October 2026
- Study design
- Randomized controlled trial
- Evidence level
- Level 1, High (CEBM 1b)
- Authors
- Ning Li, Jianan Tong, Guozheng Zhang, Shufeng Xu, Weitao Huang, Xiaowei Han, et al.
- PMID
- 42959093
- DOI
- 10.3389/fendo.2026.1928263
Why clinicians should know about it
- Picked for Radiology, Radiation Oncology, Nuclear Medicine, Medical Physics and Imaging (top studies of the week, 1 November 2026): CT multi‑phase radiomics model differentiates benign vs malignant thyroid nodules
Abstract
OBJECTIVE: To develop and validate an integrated model combining multiphase CT radiomics features, clinical data, and conventional morphological CT signs for the preoperative differentiation of benign and malignant thyroid nodules. METHODS: We retrospectively enrolled patients with surgically confirmed thyroid nodules who underwent preoperative contrast-enhanced thyroid CT examination at two centers. Patients from center 1 were randomly allocated to a training cohort and an internal validation cohort at an 8:2 ratio; patients from center 2 served as an external validation cohort. Clinical characteristics and morphological features of nodules were assessed. Radiomics features were extracted from all three CT phases, and four categories of models were constructed: clinical model, single-phase CT radiomics models, multiphase CT radiomics model, and combined clinical-radiomics model. Model performance and interpretability were evaluated using receiver operating characteristic (ROC) curve analysis, calibration curves, decision curve analysis (DCA), and SHapley Additive exPlanations (SHAP). RESULTS: The multiphase CT radiomics model yielded areas under the ROC curve (AUCs) of 0.919, 0.836, and 0.787 in the training, internal validation, and external validation cohorts, respectively. Among the single-phase models, the venous-phase model achieved the best external validation performance (AUC = 0.815). The combined model, integrating clinical and morphological features with multiphase radiomics features, achieved the highest overall diagnostic performance, with an external validation AUC of 0.865 (sensitivity = 74.0%, specificity = 84.5%), significantly outperforming both the clinical model (AUC = 0.800) and the multiphase radiomics model (AUC = 0.787). It also demonstrated favorable calibration and greater clinical net benefit. CONCLUSION: Multiphase CT radiomics enables effective differentiation of benign and malignant thyroid nodules. Integration of clinical and morphological information further improves diagnostic performance, providing an objective, noninvasive tool for preoperative risk stratification of incidentally detected thyroid nodules on CT.
Abstract as published, via PubMed.
For healthcare professionals. The summary is generated by AI from the published abstract, and the evidence level is assigned automatically from the study design on the Oxford CEBM hierarchy. Neither is medical advice. Read the full paper before changing practice.