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AIRWAYNET-SE: A SIMPLE-YET-EFFECTIVE APPROACH TO IMPROVE AIRWAY SEGMENTATION USING CONTEXT SCALE FUSION

Yulei Qin Yun Gu Hao Zheng Mingjian Chen Jie Yang Yue-Min Zhu 1
1 MYRIAD - Modeling & analysis for medical imaging and Diagnosis
CREATIS - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé
Abstract : Accurate segmentation of airways from chest CT scans is crucial for pulmonary disease diagnosis and surgical navigation. However, the intra-class variety of airways and their intrinsic tree-like structure pose challenges to the development of automatic segmentation methods. Previous work that exploits convolutional neural networks (CNNs) does not take context scales into consideration, leading to performance degradation on peripheral bronchiole. We propose the two-step AirwayNet-SE, a Simple-yet-Effective CNNsbased approach to improve airway segmentation. The first step is to adopt connectivity modeling to transform the binary segmentation task into 26-connectivity prediction task, facilitating the model's comprehension of airway anatomy. The second step is to predict connectivity with a two-stage CNNs-based approach. In the first stage, a Deep-yet-Narrow Network (DNN) and a Shallow-yet-Wide Network (SWN) are respectively utilized to learn features with large-scale and small-scale context knowledge. These two features are fused in the second stage to predict each voxel's probability of being airway and its connectivity relationship between neighbors. We trained our model on 50 CT scans from public datasets and tested on another 20 scans. Compared with stateof-the-art airway segmentation methods, the robustness and superiority of the AirwayNet-SE confirmed the effectiveness of large-scale and small-scale context fusion. In addition, we released our manual airway annotations of 60 CT scans from public datasets for supervised airway segmentation study.
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https://hal.archives-ouvertes.fr/hal-03434883
Contributor : Yuemin Zhu Connect in order to contact the contributor
Submitted on : Thursday, November 18, 2021 - 2:49:06 PM
Last modification on : Thursday, December 2, 2021 - 3:49:16 AM

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Yulei Qin, Yun Gu, Hao Zheng, Mingjian Chen, Jie Yang, et al.. AIRWAYNET-SE: A SIMPLE-YET-EFFECTIVE APPROACH TO IMPROVE AIRWAY SEGMENTATION USING CONTEXT SCALE FUSION. 2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI), Apr 2020, Iowa City, United States. pp.809-813, ⟨10.1109/ISBI45749.2020.9098537⟩. ⟨hal-03434883⟩

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