Hemi-diaphragm detection of chest X-ray images based on convolutional neural network and graphics

Article type: Research Article

Authors: Yang, Yingjian^{a; 1} | Zheng, Jie^{a; 1} | Guo, Peng^{a; 1} | Wu, Tianqi^a | Gao, Qi^b | Zeng, Xueqiang^c | Chen, Ziran^d | Zeng, Nanrong^c | Ouyang, Zhanglei^a | Guo, Yingwei^{e; *} | Chen, Huai^{f; *}

Affiliations: [a] Department of Radiological Research and Development, Shenzhen Lanmage Medical Technology Co., Ltd, Shenzhen, Guangdong, China | [b] Neusoft Medical System Co., Ltd., Shenyang, Liaoning, China | [c] School of Applied Technology, Shenzhen University, Shenzhen, China | [d] College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China | [e] School of Electrical and Information Engineering, Northeast Petroleum University, Daqing, China | [f] Department of Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China

Correspondence: [*] Corresponding authors: Yingwei Guo; E-mail: guoyingwei8801@163.com and Huai Chen; E-mail: chenhuai1977@163.com.

Note: [1] These authors contributed equally to this work.

Abstract: BACKGROUND:Chest X-rays (CXR) are widely used to facilitate the diagnosis and treatment of critically ill and emergency patients in clinical practice. Accurate hemi-diaphragm detection based on postero-anterior (P-A) CXR images is crucial for the diaphragm function assessment of critically ill and emergency patients to provide precision healthcare for these vulnerable populations. OBJECTIVE:Therefore, an effective and accurate hemi-diaphragm detection method for P-A CXR images is urgently developed to assess these vulnerable populations’ diaphragm function. METHODS:Based on the above, this paper proposes an effective hemi-diaphragm detection method for P-A CXR images based on the convolutional neural network (CNN) and graphics. First, we develop a robust and standard CNN model of pathological lungs trained by human P-A CXR images of normal and abnormal cases with multiple lung diseases to extract lung fields from P-A CXR images. Second, we propose a novel localization method of the cardiophrenic angle based on the two-dimensional projection morphology of the left and right lungs by graphics for detecting the hemi-diaphragm. RESULTS:The mean errors of the four key hemi-diaphragm points in the lung field mask images abstracted from static P-A CXR images based on five different segmentation models are 9.05, 7.19, 7.92, 7.27, and 6.73 pixels, respectively. Besides, the results also show that the mean errors of these four key hemi-diaphragm points in the lung field mask images abstracted from dynamic P-A CXR images based on these segmentation models are 5.50, 7.07, 4.43, 4.74, and 6.24 pixels,respectively. CONCLUSION:Our proposed hemi-diaphragm detection method can effectively perform hemi-diaphragm detection and may become an effective tool to assess these vulnerable populations’ diaphragm function for precision healthcare.

Keywords: Chest X-ray images, hemi-diaphragm, morphology, lung filed segmentation, convolutional neural network, graphics

DOI: 10.3233/XST-240108

Journal: Journal of X-Ray Science and Technology, vol. 32, no. 5, pp. 1273-1295, 2024