Abstract
The purpose of this study was to fuse conventional radiomic and deep features from digital breast tomosynthesis craniocaudal projection (DBT-CC) and ultrasound (US) images to establish a multimodal benign-malignant classification model and evaluate its clinical value. Data were obtained from a total of 487 patients at three centers, each of whom underwent DBT-CC and US examinations. A total of 322 patients from dataset 1 were used to construct the model, while 165 patients from datasets 2 and 3 formed the prospective testing cohort. Two radiologists with 10–20 years of work experience and three sonographers with 12–20 years of work experience semiautomatically segmented the lesions using ITK-SNAP software while considering the surrounding tissue. For the experiments, we extracted conventional radiomic and deep features from tumors from DBT-CCs and US images using PyRadiomics and Inception-v3. Additionally, we extracted conventional radiomic features from four peritumoral layers around the tumors via DBT-CC and US images. Features were fused separately from the intratumoral and peritumoral regions. For the models, we tested the SVM, KNN, decision tree, RF, XGBoost, and LightGBM classifiers. Early fusion and late fusion (ensemble and stacking) strategies were employed for feature fusion. Using the SVM classifier, stacking fusion of deep features and three peritumoral radiomic features from tumors in DBT-CC and US images achieved the optimal performance, with an accuracy and AUC of 0.953 and 0.959 [CI: 0.886–0.996], a sensitivity and specificity of 0.952 [CI: 0.888–0.992] and 0.955 [0.868–0.985], and a precision of 0.976. The experimental results indicate that the fusion model of deep features and peritumoral radiomic features from tumors in DBT-CC and US images shows promise in differentiating benign and malignant breast tumors.
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Data Availability
The datasets generated during and/or analyzed during the current study are not publicly available but are available from the corresponding author on reasonable request.
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Funding
This work was partially supported by the PhD Start-up Fund of Liaoning Province (2021-BS-044) and the Natural Science Foundation of Liaoning Province (2022-YGJC-52).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Guoxiu Lu, Wei Yang, and Nannan Zhao. Research direction and experimental design were completed under the guidance of He Ma and Wei Qian. The first draft of the manuscript was written by Ronghui Tian, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Tian, R., Lu, G., Zhao, N. et al. Constructing the Optimal Classification Model for Benign and Malignant Breast Tumors Based on Multifeature Analysis from Multimodal Images. J Digit Imaging. Inform. med. (2024). https://doi.org/10.1007/s10278-024-01036-7
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DOI: https://doi.org/10.1007/s10278-024-01036-7