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Related Experiment Videos

Reliability of acoustic rhinometry.

J Numminen1, P Dastidar, T Heinonen

  • 1Department of Otorhinolaryngology, Head and Neck Surgery, Tampere University Hospital and Tampere University Finland, Finland. jura.numminen@pshp.fi

Respiratory Medicine
|April 16, 2003
PubMed
Summary

Acoustic rhinometry (AR) shows reliable measurements for nasal cavity volumes, particularly in the anterior and middle sections. This objective method is suitable for clinical and scientific use, though posterior nasal cavity evaluations require caution due to lower accuracy.

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Area of Science:

  • Otorhinolaryngology
  • Medical Imaging
  • Respiratory Physiology

Background:

  • Growing evidence links upper and lower airway inflammatory diseases and allergies.
  • Objective measurement methods are crucial for assessing upper airway conditions like chronic sinusitis.
  • Acoustic rhinometry (AR) and High-resolution computer tomography volumetry (HRCTV) are used for nasal cavity assessment.

Purpose of the Study:

  • To compare the efficacy of acoustic rhinometry (AR) and high-resolution computed tomography volumetry (HRCTV) in measuring nasal cavity volumes and minimum cross-sectional areas (MCAs).
  • To evaluate the reliability of AR for clinical and scientific applications in nasal cavity assessment.

Main Methods:

  • 48 nasal cavities with stuffiness and chronic sinusitis were measured using both AR and HRCTV.

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  • Nasal cavity volumes were segmented into anterior (0-10 mm), middle (11-40 mm), and posterior (41-70 mm) sections.
  • MCAs and their distances from the nostril were analyzed from AR cross-sectional area curves and HRCTV coronal images.

    • Main Results:

    • Strong statistically significant correlations (P < 0.05) were found between AR and HRCTV for anterior (r=0.83) and middle (r=0.77) nasal cavity volumes.
    • A significant correlation (P < 0.05) was also observed for posterior nasal cavity volumes (r=0.62).
    • Correlations for MCAs were weaker (r=0.59 and r=0.55), and Bland-Altman plots confirmed good agreement for anterior and middle volumes.

    Conclusions:

    • Acoustic rhinometry demonstrates sufficient reliability for clinical and scientific use in assessing nasal cavity volumes, especially in anterior and middle regions.
    • While AR is reliable for anterior and middle nasal cavity measurements, caution is advised when drawing conclusions from posterior region evaluations due to decreased accuracy.
    • The findings support AR as a valuable objective tool for nasal cavity assessment in patients with conditions like chronic sinusitis.