AirMorph自动分析肺气道结构,支持精准疾病诊断与治疗规划。
AirMorph: Topology-Preserving Deep Learning for Pulmonary Airway Analysis
- 端到端深度学习框架,实现支气管各级结构全自动标注。
- 在多中心数据集上优于现有方法,准确率与拓扑一致性显著提升。
- 生成可解释的形态特征签名,适用于肺纤维化等疾病的识别。
从胸部CT中精确标注肺部解剖结构及其周围结构,对理解异常病因或支持靶向治疗和早期干预日益重要。尽管已有肺及气道细胞图谱尝试,但缺乏临床可用的细粒度形态图谱。本文提出AirMorph,一种鲁棒的端到端深度学习流程,可实现从叶级、段级到亚段级的全自动、全范围气道解剖标注,用于构建数字化肺图谱。在包含多种肺部疾病的大型多中心数据集上评估显示,AirMorph在准确性、拓扑一致性及完整性方面持续优于现有分割与标注方法。为进一步简化临床解读,我们引入一个紧凑的解剖学特征签名,量化关键气道形态特征,包括狭窄、扩张、扭曲、分叉、长度与复杂度。该签名在肺纤维化、肺气肿、不张、实变及网状阴影等多种肺部疾病中表现出强区分能力,揭示具有高可解释性的疾病特异性形态模式。此外,AirMorph支持高效自动分支分析,有望提升支气管镜导航规划与操作安全性,为精准诊断、靶向治疗与个性化医疗提供有力工具。
原文摘要 · Abstract (English)
Accurate anatomical labeling and analysis of the pulmonary structure and its surrounding anatomy from thoracic CT is getting increasingly important for understanding the etilogy of abnormalities or supporting targetted therapy and early interventions. Whilst lung and airway cell atlases have been attempted, there is a lack of fine-grained morphological atlases that are clinically deployable. In this work, we introduce AirMorph, a robust, end-to-end deep learning pipeline enabling fully automatic and comprehensive airway anatomical labeling at lobar, segmental, and subsegmental resolutions that can be used to create digital atlases of the lung. Evaluated across large-scale multi-center datasets comprising diverse pulmonary conditions, the AirMorph consistently outperformed existing segmentation and labeling methods in terms of accuracy, topological consistency, and completeness. To simplify clinical interpretation, we further introduce a compact anatomical signature quantifying critical morphological airway features, including stenosis, ectasia, tortuosity, divergence, length, and complexity. When applied to various pulmonary diseases such as pulmonary fibrosis, emphysema, atelectasis, consolidation, and reticular opacities, it demonstrates strong discriminative power, revealing disease-specific morphological patterns with high interpretability and explainability. Additionally, AirMorph supports efficient automated branching pattern analysis, potentially enhancing bronchoscopic navigation planning and procedural safety, offering a valuable clinical tool for improved diagnosis, targeted treatment, and personalized patient care.
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