The proposed GCMF-UNet and MSFA-Net architectures effectively mitigate limitations of conventional diagnostic and deep learning approaches, offering more accurate lesion segmentation and classification.
Abstract
Endometrial carcinoma ranks among the most common malignancies of the female reproductive system. Accurate early-stage staging is essential for devising appropriate treatment plans and assessing patient prognosis. This study aims to enhance diagnostic precision by overcoming the limitations of traditional imaging methods and existing deep learning models.To address challenges such as dependency on physician expertise, inefficiency, and deficiencies in feature transmission, boundary detail restoration, and multi-scale feature integration, we propose a novel architecture termed GCMF-UNet (Group Convolution and Multi-Scale Fusion U-Net). Furthermore, for classification tasks, we introduce MSFA-Net (Multi-Scale Fusion Attention Network), which integrates a ResNet-18 backbone with a multi-scale feature aggregation module, squeeze-and-excitation (SE) attention, and a Swin Transformer for global contextual modeling. Experimental results indicate that GCMF-UNet improves Accuracy from 90.1% to 94.2% and Recall from 89.3% to 94.8% compared to the standard U-Net. In classification performance, MSFA-Net improves F1-score from 0.901 to 0.938 over baseline ResNet-18, demonstrating enhanced capability in identifying critical lesion features. The proposed GCMF-UNet and MSFA-Net architectures effectively mitigate limitations of conventional diagnostic and deep learning approaches, offering more accurate lesion segmentation and classification. These advancements offer a technical basis for further exploration of automated diagnosis and staging in endometrial carcinoma.
Accurate assessment of Ki-67 expression levels in breast cancer is crucial for determining prognosis and making informed treatment decisions. Current immunohistochemical methods relying on needle biopsy introduce sampling errors due to tumor spatial heterogeneity, making the development of non-invasive, precise preoperative prediction methods of significant clinical importance. This study aims to explore and compare advanced deep learning models based on dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) for noninvasive assessment of Ki-67 expression. This retrospective study analyzed preoperative DCE-MRI data from 308 patients with histologically confirmed breast cancer. Adjacent slices centered on the tumor’s most significant cross-section were obtained to create a 2.5-dimensional (2·5D) dataset. We innovatively developed two deep learning models using the same dataset (1): a Multi-Instance Learning (MIL) model that combines slice-level predictive features with Predictive Likelihood Histogram (PLH) and Bag-of-Words (BoW) techniques (2); a Transformer-based fusion model that directly captures global contextual relationships between slices via self-attention mechanisms. The predictive performance of both models was systematically compared with traditional radiomics and clinical models. On an independent test set, the Transformer fusion model demonstrated optimal predictive performance with an area under the curve (AUC) of 0.875, achieving accuracy, sensitivity, and specificity of 0.839, 0.848, and 0.833, respectively. The MIL model ranked second (AUC = 0.825), with both models significantly outperforming traditional radiomics models (AUC = 0.698) and clinical models (AUC = 0.648). Deep learning models based on 2·5D DCE-MRI, especially Transformer models that achieve global feature fusion through self-attention mechanisms, can effectively and non-invasively predict Ki-67 expression status in breast cancer, surpassing traditional methods. This model shows potential as a reliable tool to help clinicians accurately assess tumor proliferation activity before surgery.
Yiying Cao, Mi Lin, Yanshan Ouyang et al.· Cancer Imaging· 0 citations
Cervical cancer remains a leading cause of cancer-related mortality among women worldwide, yet its progression is largely preventable through timely and accurate diagnosis. Conventional Pap smear screening pipelines, however, are constrained by subjective interpretation, diagnostic complexity, and limited throughput — barriers that impede scalable deployment in resource-limited settings. To address these critical gaps, this study presents EQS-NET, a novel, lightweight, and feature-optimized Computer-Aided Diagnosis (CAD) framework that leverages a heterogeneous ensemble of compact CNNs — ShuffleNet, SqueezeNet, and EfficientNet — to extract complementary deep representations via transfer learning. EQS-NET employs a Multi-Layer Deep Feature Fusion strategy aggregating discriminative features across the final three convolutional layers of each network, refined through mRMR-based feature selection. The framework eliminates the need for hand-crafted feature engineering, image segmentation, and cytology-specific preprocessing, relying only on minimal standard preprocessing. Validated under stratified 5-fold cross-validation on two benchmark datasets, EQS-NET achieves 98.5% ± 0.18% on SIPaKMeD and 99.98% ± 0.04% on Mendeley LBC (p < 0.001 against single-CNN baselines), outperforming existing state-of-the-art methods across sensitivity, specificity, and AUC — establishing it as a scalable, efficient, and clinically viable solution for automated cervical cancer screening.
Bhawna Swarnkar, Nilay Khare, M. Gyanchandani et al.· Discover Computing· 0 citations
Although deep learning-based volumetric analysis has shown great potential in addressing the shortcomings of linear tumor assessment, several challenges still impede clinical implementation, including limited data availability, variability in annotation, sensitivity to scanners and acquisition protocols, poor interpretability, and multimodal integration.
Tuğçe Tezel, Mehmet Turkan, Ebru Sayilgan· Annals of Biomedical Enginee...· 0 citations
Uterine fibroids are one of the most common gynaecological tumours, but they can be hard to diagnose because their appearance varies and the images may have poor contrast. Existing computer-aided detection (CAD) methods often use features that were handcrafted or use only a single modality, which limits their reliability and interpretability. An Explainable Hybrid Deep Learning (E-HDL) framework is introduced in this study. It includes a self-improving preprocessing pipeline, adaptive multi-branch feature fusion, and attention-based interpretability for reliably detecting uterine fibroids on both ultrasound and MRI. To make sure that the input quality is the same, the process uses bias-field correction, anisotropic diffusion filtering, CLAHE contrast normalisation, and adaptive spatial alignment. Spatial deep features from a CNN are combined dynamically with contextual embeddings from Transformers and temporal representations from RNNs using an attention-based feature-scaling layer. Extensive experiments on the Mendeley Uterine Fibroid Dataset and cross-dataset evaluation on the HIFU-MRI and UFID-2023 benchmarks show that E-HDL works better than recent state-of-the-art models like Swin-Transformer, MedT, ConvNeXt, and EfficientNetV2. The suggested model is more accurate than previous combination and transformer-based systems, with a 97.1% F1-score and 0.989 AUC. Grad-CAM, SHAP, and attention heatmaps improve interpretability in clinical settings. The study shows that E-HDL is a high-performance, scalable, and easy-to-understand diagnostic aid for detecting uterine tumours.
Trupti Kherde· International Research Journ...· 0 citations
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