ORIGINAL RESEARCH article
Front. Physiol.
Sec. Respiratory Physiology and Pathophysiology
Volume 16 - 2025 | doi: 10.3389/fphys.2025.1578058
Longitudinal Analysis of Coal Workers' Pneumoconiosis Using Enhanced Resolution-Computed Tomography Images: Unveiling Patterns in Lung Structure, Function, and Clinical Correlations
Provisionally accepted
- 1Kyungpook National University, Daegu, Republic of Korea
- 2An Giang University, Long Xuyên, Vietnam
- 3Vietnam National University, Ho Chi Minh City, Ho Chi Minh City, Vietnam
- 4Kosin University, Busan, Republic of Korea
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Rationale: Pneumoconiosis, caused by prolonged exposure to mineral dust, leads to progressive structural and functional lung alterations. Quantitative computed tomography (qCT) has emerged as a critical tool for assessing these changes, yet there is limited research on the longitudinal patterns in pneumoconiosis patients.Methods: This study examined a cohort of 31 former coal workers with pneumoconiosis over a one-year period. Inspiratory qCT images were enhanced using a deep learning-based super-resolution model and then processed to extract lung functional and airway structural metrics. A non-rigid image registration process was performed with baseline images as fixed and follow-up images as moving. Registration-derived metrics, including anisotropic deformation index (ADI), slab rod index (SRI), and Jacobian (J), were extracted to quantify regional deformation longitudinally. Pulmonary function tests, including forced expiratory volume in one second (FEV1) and forced vital capacity (FVC), were recorded at both time points to assess functional decline.Results: The study identified significant airway changes in angles, diameters, and geometry, with a decrease in normal lung tissue in the right upper lobe. Blood vessel volumes declined, indicating vascular remodeling. Registration metrics revealed regional heterogeneity, with higher ADI and SRI values and localized volume loss (J) in the lower lobes. FEV1/FVC progression correlated positively with tracheal angle, emphysema, and consolidation but negatively with normal lung tissue, semi-consolidation, and fibrosis. ADI, SRI, and J were associated with structural deformation, airway remodeling, and parenchymal loss, linking these changes to lung function decline.Conclusion: qCT imaging and registration metrics effectively monitor structural and functional lung changes in pneumoconiosis. Registering baseline and follow-up inspiration images offers additionally valuable insights into disease progression.
Keywords: coal workers with pneumoconiosis, longitudinal analysis, Lung structure, Lung function, clinical implications, disease progression
Received: 17 Feb 2025; Accepted: 20 May 2025.
Copyright: © 2025 Chau, Park and Choi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Eun-Kee Park, Kosin University, Busan, 301-746, Republic of Korea
Sanghun Choi, Kyungpook National University, Daegu, Republic of Korea
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