View Identification Assisted Fully Convolutional Network for Lung Field Segmentation of Frontal and Lateral Chest Radiographs

IEEE Access

卷:9

Genggeng Qin¹  Wei Yang²  Yunbi Liu²  Yuhua Xi²  Liming Zhong²  Weijie Xie²  Qianjin Feng² 

[1] Department of Radiology, Nanfang Hospital, Southern Medical University, Guangzhou, China;

[2] School of Biomedical Engineering, Southern Medical University, Guangzhou, China;

关键词: Chest radiographs;    lung field segmentation;    generalization ability;    COVID-19;   

DOI  :  10.1109/ACCESS.2021.3074026

来源: DOAJ

【 摘 要 】

Locating lung field is a critical and fundamental processing stage in the automated analysis of chest radiographs (CXRs) for pulmonary disorders. During the routine examination of CXRs, using both frontal and lateral CXRs can benefit clinical diagnosis of cardiothoracic and lung diseases. However, the accurate segmentation of lung fields on both frontal and lateral CXRs is still challenging due to the blurry boundary of the lung field on lateral CXRs and the poor generalization ability of the models. Existing deep learning-based methods focused on lung field segmentation on frontal CXRs, and the generalization ability of these methods on the different type of CXRs (e.g., pediatric CXRs) and new lung diseases (e.g., COVID-19) has not been tested. In this paper, a view identification assisted fully convolutional network (VI-FCN) is proposed for the segmentation of lung fields on frontal and lateral CXRs simultaneously. The VI-FCN consists of an FCN branch for lung field segmentation and a view identification branch for identification of the frontal and lateral CXRs and for enhancing the lung field segmentation. To improve the generalization ability of VI-FCN, six public datasets and our frontal and lateral CXRs (over 2000 CXRs) were collected for training. The segmentation of lung fields on the Japanese Society of Radiological Technology (JSRT) dataset yields mean dice similarity coefficient (DSC) of 0.979 ± 0.008, mean Jaccard index ( Ω) of 0.959 ± 0.016, and mean boundary distance (MBD) of 1.023 ± 0.487 mm. Besides, the VI-FCN achieves mean DSC of 0.973 ± 0.010, mean Ω of 0.947 ± 0.018, and mean MBD of 1.923 ± 0.755 mm for the segmentation of lung fields on our lateral CXRs. The experiments demonstrate the superior performance of the proposed VI-FCN over most of existing state-of-the-art methods. Moreover, the proposed VI-FCN achieves promising results on untrained pediatric CXRs and COVID-19 datasets.

【 授权许可】

Unknown