Cited by 175Inhalation and Respiratory Drug DeliveryParticle Dynamics in Fluid FlowsAir Quality and Health Impacts

Regional deposition of particles in an image-based airway model: Large-eddy simulation and left-right lung ventilation asymmetry

Open access
Lambert, Andrew R., O'shaughnessy, Patrick T., Tawhai, Merryn H., Hoffman, Eric A., Lin, Ching-Long·2011·Aerosol Science and Technology

Abstract

Regional deposition and ventilation of particles by generation, lobe and lung during steady inhalation in a computed tomography (CT) based human airway model are investigated numerically. The airway model consists of a seven-generation human airway tree, with oral cavity, pharynx and larynx. The turbulent flow in the upper respiratory tract is simulated by large-eddy simulation. The flow boundary conditions at the peripheral airways are derived from CT images at two lung volumes to produce physiologically-realistic regional ventilation. Particles with diameter equal to or greater than 2.5 microns are selected for study because smaller particles tend to penetrate to the more distal parts of the lung. The current generational particle deposition efficiencies agree well with existing measurement data. Generational deposition efficiencies exhibit similar dependence on particle Stokes number regardless of generation, whereas deposition and ventilation efficiencies vary by lobe and lung, depending on airway morphology and airflow ventilation. In particular, regardless of particle size, the left lung receives a greater proportion of the particle bolus as compared to the right lung in spite of greater flow ventilation to the right lung. This observation is supported by the left-right lung asymmetry of particle ventilation observed in medical imaging. It is found that the particle-laden turbulent laryngeal jet flow, coupled with the unique geometrical features of the airway, causes a disproportionate amount of particles to enter the left lung.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1080/02786826.2010.517578

Cites

62 of 62 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Particle/fiber deposition can often be greatest in the lower lung fields.

    “Particle/fiber deposition can often be greatest in the lower lung fields [89].”

    From Asbestos and Iron (2023) · cites this paper as [89]

    The Discussion states that particle deposition was greatest in the lower lung lobes and reports a similar finding in a prior study. This supports the claim for particles, but our copy does not establish the same pattern for fibers. (LLM, conf=0.83)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lambert, A. R., O'shaughnessy, P. T., Tawhai, M. H., Hoffman, E. A., & Lin, C.-L.
Affiliations
  • University of Iowa (US)
  • University of Auckland (NZ)
Corresponding author
Lin, Ching-Long
Venue
Aerosol Science and Technology
Published
2011-01
Volume
45
Issue
1
Pages
11-25
ISSN
  • 0278-6826 (ISSN-L)
  • 1521-7388
OpenAlex
W2172012864
Cited by
175
References
62
Citations by year
2026: 6 · 2025: 16 · 2024: 9 · 2023: 15 · 2022: 10 · 2021: 11 · 2020: 17 · 2019: 11 · 2018: 12 · 2017: 14 · 2016: 8 · 2015: 10 · 2014: 8 · 2013: 11 · 2012: 9
FWCI
7.44
Type
journal article
Language
en
Open access
Locations
  • Aerosol Science and Technology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • ResearchSpace (University of Auckland) (submittedVersion)
Funders
  • Georgia Clinical and Translational Science Alliance
  • National Institutes of Health (NIH-R01, 5r01hl064368-10, 1s10rr022421-01a2)
  • National Heart, Lung, and Blood Institute (R01 HL-064368, R01HL094315)
  • National Institute of Environmental Health Sciences (P30-ES-05605, ES05605, P30ES005605)
  • National Institute of Biomedical Imaging and Bioengineering (R01EB005823)
  • National Center for Research Resources (UL1RR024979, S10-RR022421)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Inhalation and Respiratory Drug Delivery
  • Physical Sciences › Engineering › Ocean Engineering › Particle Dynamics in Fluid Flows
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
Keywords
particle deposition, regional lung ventilation, large eddy simulation, Stokes number, deposition efficiency, particle-laden flow

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review