ArticleComputational and mathematical methods in medicine2017
Transient Dynamics Simulation of Airflow in a CT-Scanned Human Airway Tree: More or Fewer Terminal Bronchi?
Article in Computational and mathematical methods in medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Bionic breathing-type airway exposure system for inhalation exposure studies.Frontiers in bioengineering and biotechnology · 2026Article
- Evaluation of Airflow Sensitivity to the Truncation Level of a Realistic Human Airway Model in an Accurate Numerical Simulation.Journal of biomedical physics & engineering · 2022Article
- CFD simulations of respiratory airflow in human upper airways response to walking and running for oral breathing condition.Heliyon · 2022Article
- Functional analysis of the airways after pulmonary lobectomy through computational fluid dynamics.Scientific reports · 2022Article
- VIVID:IEEE transactions on molecular, biological, and multi-scale communications · 2021Article
- Spatial architecture of biliary tree in mammals: Fractal and Euclidean geometric features.Journal of anatomy · 2021Article
- Computational fluid dynamics of the airways after left-upper pulmonary lobectomy: A case study.International journal for numerical methods in biomedical engineering · 2021Article
- Image-based simulation and modeling: unlocking small airway function tests?Journal of applied physiology (Bethesda, Md. : 1985) · 2020Article
- Structural and functional alterations of the tracheobronchial tree after left upper pulmonary lobectomy for lung cancer.Biomedical engineering online · 2019Article
- Airflow in Tracheobronchial Tree of Subjects with Tracheal Bronchus Simulated Using CT Image Based Models and CFD Method.Journal of medical systems · 2018Article
- Design and Simulation Study of a CNT-Based Multisource Cubical CT System for Dynamic Objects.Scanning · 2018Article
- Particle Disposition in the Realistic Airway Tree Models of Subjects with Tracheal Bronchus and COPD.BioMed research international · 2018Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Using computational fluid dynamics (CFD) method, the feasibility of simulating transient airflow in a CT-based airway tree with more than 100 outlets for a whole respiratory period is studied, and the influence of truncations of terminal bronchi on CFD characteristics is investigated. After an airway model with 122 outlets is extracted from CT images, the transient airflow is simulated. Spatial and temporal variations of flow velocity, wall pressure, and wall shear stress are presented; the flow pattern and lobar distribution of air are gotten as well. All results are compared with those of a truncated model with 22 outlets. It is found that the flow pattern shows lobar heterogeneity that the near-wall air in the trachea is inhaled into the upper lobe while the center flow enters the other lobes, and the lobar distribution of air is significantly correlated with the outlet area ratio. The truncation decreases airflow to right and left upper lobes and increases the deviation of airflow distributions between inspiration and expiration. Simulating the transient airflow in an airway tree model with 122 bronchi using CFD is feasible. The model with more terminal bronchi decreases the difference between the lobar distributions at inspiration and at expiration.
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