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Maxillary sinus aeration analysis using computational fluid dynamics.

Dmitry Tretiakow1, Krzysztof Tesch2, Karolina Markiet3

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This summary is machine-generated.

Nasal septal deviation significantly impacts maxillary sinus airflow, altering continuous flow to pulsatile. Lower nasal septal deviation has the greatest effect on airflow changes within the sinuses.

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Area of Science:

  • Biomedical Engineering
  • Respiratory Medicine
  • Computational Fluid Dynamics

Background:

  • Maxillary sinus aeration is crucial for sinus health.
  • Nasal septal deviation (NSD) and concha bullosa (CB) are common conditions affecting nasal airflow.
  • Understanding airflow dynamics in the maxillary sinuses is important for diagnosing and treating sinonasal diseases.

Purpose of the Study:

  • To analyze maxillary sinus aeration using computational fluid dynamics (CFD) based on individual computed tomography (CT) scans.
  • To investigate the impact of nasal septal deviation (NSD) and concha bullosa (CB) on airflow within the maxillary sinuses.
  • To introduce and evaluate a vorticity measure for qualitative comparison of airflow patterns.

Main Methods:

  • CFD simulations were performed on CT scans of 4 adult patients (1 normal, 3 with NSD/CB).
  • The Reynolds-Average Simulation approach with k-ω SST turbulence model was employed.
  • A vorticity measure was introduced to quantify airflow changes.

Main Results:

  • Lower NSD significantly alters maxillary sinus airflow compared to CB and upper NSD.
  • Healthy airflow is continuous; NSD and CB induce pulsatile flow with directional changes.
  • Flow intensity at the maxillary sinus opening is reduced on the NSD side.
  • Vorticity measures correlate with the degree of nasal cavity pathology.

Conclusions:

  • Lower NSD is a primary factor influencing maxillary sinus airflow dynamics.
  • Pathological nasal anatomy transforms continuous sinus airflow into pulsatile patterns.
  • CFD analysis and vorticity measures provide valuable insights into sinonasal airflow alterations.