Attention-guided multiple instance learning for COPD identification: To combine the intensity and morphology

Wu, Yanan; Qi, Shouliang; Chang, Runsheng; Pang, Hongshen; Hou, Jie; Li, Mengqi; Wang, Yingxi; Xia, Shunren; Qian, Wei

doi:10.1016/j.bbe.2023.06.004

Cited by 5 publications

(1 citation statement)

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“…It learns from data and makes predictions without being explicitly programmed [ 18 ]. Statistical techniques are also involved to enable computers to automatically improve their performance on a specific task [ 19 ], for example, classification and staging of COPD [ 20 , 21 ]. Yang et al proposed to characterize and classify COPD stages based on multi-layer perceptron [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Learning and depicting lobe-based radiomics feature for COPD Severity staging in low-dose CT images

Zhao,

Wu,

et al. 2024

BMC Pulm Med

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Background Chronic obstructive pulmonary disease (COPD) is a prevalent and debilitating respiratory condition that imposes a significant healthcare burden worldwide. Accurate staging of COPD severity is crucial for patient management and treatment planning. Methods The retrospective study included 530 hospital patients. A lobe-based radiomics method was proposed to classify COPD severity using computed tomography (CT) images. First, we segmented the lung lobes with a convolutional neural network model. Secondly, the radiomic features of each lung lobe are extracted from CT images, the features of the five lung lobes are merged, and the selection of features is accomplished through the utilization of a variance threshold, t-Test, least absolute shrinkage and selection operator (LASSO). Finally, the COPD severity was classified by a support vector machine (SVM) classifier. Results 104 features were selected for staging COPD according to the Global initiative for chronic Obstructive Lung Disease (GOLD). The SVM classifier showed remarkable performance with an accuracy of 0.63. Moreover, an additional set of 132 features were selected to distinguish between milder (GOLD I + GOLD II) and more severe instances (GOLD III + GOLD IV) of COPD. The accuracy for SVM stood at 0.87. Conclusions The proposed method proved that the novel lobe-based radiomics method can significantly contribute to the refinement of COPD severity staging. By combining radiomic features from each lung lobe, it can obtain a more comprehensive and rich set of features and better capture the CT radiomic features of the lung than simply observing the lung as a whole.

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