Towards Clinical Practice in CT-Based Pulmonary Disease Screening: An Efficient and Reliable Framework

• URL: http://arxiv.org/abs/2412.01525v3
• Date: Thu, 12 Jun 2025 06:50:04 GMT
• Title: Towards Clinical Practice in CT-Based Pulmonary Disease Screening: An Efficient and Reliable Framework
• Authors: Qian Shao, Bang Du, Kai Zhang, Yixuan Wu, Zepeng Li, Qiyuan Chen, Qianqian Tang, Jian Wu, Jintai Chen, Honghao Gao, Hongxia Xu,
• Abstract summary: Cluster-based Sub-Sampling (CSS) method efficiently selects a compact yet comprehensive subset of CT slices.<n>Hybrid Uncertainty Quantification (HUQ) mechanism assesses both Aleatoric Uncertainty (AU) and Epistemic Uncertainty (EU) with minimal computational overhead.
• Score: 16.98886836566185
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Deep learning models for pulmonary disease screening from Computed Tomography (CT) scans promise to alleviate the immense workload on radiologists. Still, their high computational cost, stemming from processing entire 3D volumes, remains a major barrier to widespread clinical adoption. Current sub-sampling techniques often compromise diagnostic integrity by introducing artifacts or discarding critical information. To overcome these limitations, we propose an Efficient and Reliable Framework (ERF) that fundamentally improves the practicality of automated CT analysis. Our framework introduces two core innovations: (1) A Cluster-based Sub-Sampling (CSS) method that efficiently selects a compact yet comprehensive subset of CT slices by optimizing for both representativeness and diversity. By integrating an efficient k-Nearest Neighbor (k-NN) search with an iterative refinement process, CSS bypasses the computational bottlenecks of previous methods while preserving vital diagnostic features. (2) A lightweight Hybrid Uncertainty Quantification (HUQ) mechanism, which uniquely assesses both Aleatoric Uncertainty (AU) and Epistemic Uncertainty (EU) with minimal computational overhead. By maximizing the discrepancy between auxiliary classifiers, HUQ provides a robust reliability score, which is crucial for building trust in automated systems operating on partial data. Validated on two public datasets with 2,654 CT volumes across diagnostic tasks for 3 pulmonary diseases, our proposed ERF achieves diagnostic performance comparable to the full-volume analysis (over 90% accuracy and recall) while reducing processing time by more than 60%. This work represents a significant step towards deploying fast, accurate, and trustworthy AI-powered screening tools in time-sensitive clinical settings.

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