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A Temporal Convolutional Network with Attention for Sepsis Prediction: A Conceptual Framework for Analyzing High-Frequency Vital Signs in Intensive Care Units
Sepsis is a leading cause of ICU mortality, and early detection is critical for improving patient outcomes. However, existing machine learning models often rely on hourly aggregated data, limiting their ability to capture rapid physiological changes, and frequently lack interpretability, reducing clinical trust and usability. This paper proposes a conceptual framework that integrates Temporal Convolutional Networks (TCNs) with an attention mechanism to analyze high-frequency, minute-level vital sign data for early sepsis prediction. The architecture includes a data input layer, a TCN-based feature extractor with causal dilated convolutions and residual connections, an attention module for identifying clinically relevant time points and variables, and a prediction head that estimates the risk of sepsis within a 6-hour horizon. The proposed approach enables efficient parallel processing, improved temporal sensitivity, and enhanced interpretability compared to recurrent models. While offering advantages in real-time prediction and explainability, challenges remain in handling missing data, ensuring generalizability across ICUs, and minimizing false alarms for clinical deployment.
Journal of Artificial Intelligence for Healthcare Systems
Original Research | Open access | 20 January 2022 | Article: 53

Attention-Based Multiple Instance Learning for Ovarian Cancer Survival Prediction: A Framework Using Whole-Slide Histopathology without Pixel-Level Annotations
Ovarian cancer, particularly high-grade serous carcinoma, is highly lethal, and accurate survival prediction is essential for treatment planning. However, traditional prognostic models rely on limited clinical and histologic features, while deep learning approaches require expensive pixel-level annotations of whole-slide histopathology images, limiting scalability. We propose a weakly supervised attention-based multiple instance learning (MIL) framework that predicts ovarian cancer survival using only slide-level survival labels. Each whole-slide image is treated as a bag of patches, where a patch encoder extracts features using a pre-trained CNN or vision transformer. An attention-based MIL aggregator assigns importance weights to patches, and a survival head outputs a risk score via a deep Cox model. The attention mechanism enhances interpretability by identifying prognostically relevant regions such as aggressive tumor morphology, stromal patterns, and immune infiltration. This reduces the need for manual annotation while preserving clinical relevance. The framework provides a scalable and interpretable approach for survival prediction and can be evaluated on datasets such as TCGA-OV and CPTAC for clinical translation.
Journal of Artificial Intelligence for Healthcare Systems
Original Research | Open access | 20 July 2024 | Article: 85

A Conceptual Framework for Attention-Enhanced Deep Supervision in Pancreatic Tumor Segmentation and Resectability Assessment from Contrast-Enhanced CT
Pancreatic cancer is highly lethal, and surgical resection is the only curative option. Preoperative assessment using contrast-enhanced CT is essential for determining tumor resectability based on involvement of key vessels such as the superior mesenteric artery, celiac trunk, and portal vein. Accurate pancreatic tumor segmentation is difficult due to unclear boundaries, low contrast with surrounding tissue, and proximity to major vessels. Manual segmentation is slow, subjective, and inconsistent, especially in borderline cases, while tumor-associated fibrosis further obscures lesion margins. We propose a deep learning-based framework using an attention-enhanced U-Net with multi-scale feature fusion and deep supervision for tumor segmentation and resectability assessment. The model incorporates attention gates, atrous spatial pyramid pooling, and auxiliary losses at multiple decoder levels to improve feature learning and gradient flow. A pre-trained encoder extracts hierarchical features refined by attention mechanisms in skip connections. A multi-scale decoder reconstructs segmentation maps, supported by deep supervision at different resolutions. A parallel branch models tumor–vessel spatial relationships using distance maps to improve resectability classification. This framework enables automated pancreatic tumor segmentation and resectability evaluation from CT scans, improving accuracy, interpretability, and clinical utility. Validation on datasets such as Pancreas-CT and Medical Segmentation Decathlon is recommended.
Journal of Artificial Intelligence for Healthcare Systems
Original Research | Open access | 20 July 2024 | Article: 94
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AI-driven Diagnostics Artificial Intelligence in Health Informatics Artificial Intelligence in Healthcare Big Data in Healthcare Clinical Data Mining Clinical Decision Support Systems Clinical Informatics Computer Vision Connected Health Systems Deep Learning Digital Health Digital Healthcare Innovation Digital Transformation in Healthcare Electronic Health Records Ethical AI in Healthcare Explainable AI Health Data Analytics Health Data Privacy Health Informatics Health Information Management Health Information Systems Health System Optimization Health Technology Assessment Healthcare Data Science Healthcare Informatics Healthcare Information Security Healthcare Management Healthcare Management Information Systems Intelligent Medical Systems Internet of Medical Things (IoMT) Interoperability in Healthcare Systems Machine Learning Medical Data Analytics Medical Data Management Medical Imaging Mobile Health (mHealth) Natural Language Processing Precision Medicine Predictive Analytics Remote Patient Monitoring Smart Healthcare Systems Telemedicine Wearable Health Technologies e-Health




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