Acoustic Rhinometer

Acoustic Rhinometers allow a very rapid non invasive examination of the nasal cavity using a sound pulse technique.

Acoustic Rhinometry was developed originally during a joint collaborative project between the Universities of Aarhus (Denmark) and Boston (USA).
GM Instruments was invited to commercialise the system, and has been actively working with interested parties to improve the measurement since then.

The Rhinometer quantifies nasal structure and measures this in terms of absolute levels and the effect of interventions, thus allowing % change to be recorded.

Key Benefits of the Acoustic Rhinometer:

  • Supplied with Adult sound tube and options for Animal or Pediatric alternative sound tubes
  • PC Based with either a Clinical or Clinical/Research version
  • Pre/Post challenge or operative comparisons
  • Interfaced through a USB PC connection
  • Software available for up to and including windows 10
  • Supplied with anatomical and conical nose piece starter packs for airtight connection without distortion
The acoustic rhinometer functions as reflections of the sound pulse, produced by changes in the cross sectional area within the nose are processed by a PC to provide a plot of area, as a function of distance, into the nose. Numerical information such as the area at certain distances, and volumes between certain points in the nose, can also be presented.

Applications include:

  • Surgical pre/post comparisons
  • Nasal symmetry assessment
  • Allergen challenge recording
  • Sleep studies
  • Quantifying changes due to Surgery, Decongestants or Medication

The Clinical Model provides a patient database, software calibration, colour selection facility for screen and printout, patient record screen editing, adjustable scale setting, calculation of the first two minimum areas, the distance at which minimas were found, the volume between any three distances, and user defined printout headings. A starter pack of consumables is also supplied.

The Clinical/Research Version provides all of the features mentioned above, that the Clinical model does, but with the addition of also providing:

  • Result validation facility
  • System performance checking/adjustment tools
  • Data export facilities
  • Capability of adding additional sound tubes

Five pairs of medium and large anatomically conformed nosepieces, and fifteen sets of 8mm conical nosepieces are supplied with each version. Software is supplied on a USB flash drive.

Available Options

  • Animal or paediatric sound tubes are available as an alternative to the standard adult sound tube.
  • Our NR6 Rhinomanometer is compatible with the acoustic rhinometer and can be linked to provide combined measurements through our NARIS software. This provides rhinomanometric and rhinometric measurements, with mixed results saved to a subject database or output to a common report.
  • A USB footswitch, with which to initiate a measurement, can also be supplied as an option.
  • We can supply PC and a Printer should this be required
Clinical Clinical Research
Distance Range – Standard Sound Tube 12cm 12cm
Distance Range – Optional Small Animal Sound Tube 5cm 5cm
Distance Range – Optional Child Sound Tube 10cm 10cm
Area Range – Standard Sound Tube 0.1–20cm² 0.1–20cm²
Area Range – Optional Small Animal Sound Tube 0.001–0.3cm² 0.001–0.3cm²
Area Range – Optional Child Sound Tube 0.01–5cm² 0.01–5cm²
Volume Accuracy – Distance 0–5cm 2% 2%
Volume Accuracy – 5cm End 5% 5%
Information Reported – Standard Software 2x min areas, 3x volumes 2x min areas, 3x volumes
Information Reported – Multiple Report NO YES – Volumes & Areas
Information Reported – Data Export Facility NO YES
Product Dimensions: 27 x 6 x 28cm 27 x 6 x 28cm
Product Weight ~2Kg  ~2Kg
CE Mark Class IIa IIa
Complies with SC* Recommendations YES YES
‘Best Practise’ Batch Facility NO YES
Electrical Safety BS EN 60601 BS EN 60601

* SC – Standardisation Committee

The full product brochure is available to download here:

Nasal Investigation Brochure

The full product brochure is available to download here:
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3) Hilberg 0, Grymer LF, Pedersen OF, Elbrond 0.
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6) Illum P, Grymer L, Hilberg 0.
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19) Rasp G .
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20) Lenders H, Pirsig W.
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21) Grymer LF, Hilberg 0, Pedersen OF, Rasmussen TR.
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23) Lenders H, Pirsig W.
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26) Kase Y, Itimura K, Iinuma T .
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27) Mayhew TM, O’Flynn P .
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29) Edward W. Fisher, Adrian B. Boreham
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30) Tomkinson A, Eccles R.
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31) Pedersen OF, Yamagiwa M, Miyahara Y, Sakakura Y
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32) Pedersen OF, Berkowitz R, Yamagiwa M, Hilberg O
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33) Tomkinson, A. and Eccles, R. (1996) Comparison of the relative abilities of acoustic
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34) G.K. Scadding, Y.C. Darby, C.E. Austin
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35) Zavras, et al.
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36) Hillberg 0, Pedersen O.F .
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37) Ganslmayer M, Spertini F, Rahm F, Terrien M H, Mosimann B, Leimgruber A.
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38) Porter M.J., Williamson I.G, Kerridge D. H, Maw A.R.
A comparison of the sensitivity of manometric rhinometry , acoustic rhinometry,
rhinomanometry and nasal peak flow to detect the decongestant effect of xylometazoline.
Clin. Otolaryngol. 1995, 20, 000-000

39) Andrew C. Jackson, Dan E. Olson
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40) Hamilton JW, McRae RD, Phillips DE, Jones AS
The accuracy of acoustic rhinometry using a pulse train signal.
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41) Blackwell Munksgaard
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42) Acoustic Rhinometry: Values from adults with subjective norm31 nasel patency.
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43) Consensus report on Acoustic Rhinometry and Rhinomanometry.
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44) Erica J. Sims, Andrew M. Wilson, Paul S. White, Quentin Gardiner, Brian J. Lipworth.
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45) Wilson AM, Simms EJ, Orr LC, Coutie WJR, White PS, Gardiner Q, & Lipworth BJ.
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46) Wilson AM, Fowler SJ, Martin SW, White PS, Gardiner Q, & Lipworth BJ.
Evaluation of the importance of head and probe stabilisation in acoustic rhinometry.
Rhinology. 39, 93-97, (2001).

47) Hilberg 0, Jenson FT, Pedersen OF.
Nasal Airway Geometry: Comparison between acoustic reflections and magnetic
resonance scanning.
J Appl Physiol. 1993;75:2811-2819

48) Hilberg 0, Lyholm B, Michelsen A, Pedersen OF, Jacobsen O.
Acoustic reflections during rhinometry: spatial resolution and sound loss.
J Appl Physiol. 1998;84:1030-1039

49) Corey JP, Kemker BJ, Nelson R, Gungor A
Evaluation of the nasal cavity by acoustic rhinometry in normal and allergic
subjects
Otolaryngol. Head and Neck Surgery 1997;117:22-28

50) Takeno S, Kawamoto H, Hirata S, Fukushima N, Yazin K
Decongesting effect of Tramazoline on nasal airway patency and nasal symptoms
as evaluated by Acoustic Rhinometry.
Nippon Jibiinkoka Gakkai Kaiho 1998;101:900-907

51) Akerlund A, Bende M, Murphey C.
Olfactory threshold and nasal mucosal changes in experimentally induced
common cold.
Acta Otolaryngol. 1995;115:88-92

52) Lotta E. Haavisto, M.D., and Jukka I. Sipila, M.D.
Acoustic rhinometry in children: Some practical aspects and influence of age and
body surface area on results.
Am J Rhinol 22, 416-419, 2008.

53) Lotta E. Haavisto, Tero J. Vahlberg, Jukka I. Sipila
A follow-up study with acoustic rhinometry in children using nasal insulin.
Rhinology, 48, 95-99, 2010

54) Lotta E. Haavisto, Tero J. Vahlberg, Jukka I. Sipila
Reference values for acoustic rhinometry in children at baseline and after
decongestion.
Rhinology 49: 243-247, 2011

55) Cenk Doruk, Oral Sokucu, A. Altug Bicakci, Ugur Yilmaz and Fikret Tas
Comparison of nasal volume changes during rapid maxillary expansion using
acoustic rhinometry and computed tomography.
European Orthodontic Society, 2006

56) Ilknur Haberal Can, Kursad Ceylen, Unal Bayiz, Ali Olmez and Erdal Samim
Acoutic rhinometry in the objective evaluation of childhood septoplasties
International Journal of Pediatric Otorhinolaryngology
Volume 69, Issue 4, Pages 445-448 April 2005

57) Viviane Camargo Marques and Wilma T Anselmo-Lima
Pre- and postoperative evaluation by acoustic rhinometry of children submitted to
adenoidectomy or adenotonsillectomy
International Journal of Pediatric Otorhinolaryngology
Volume 68, Issue 3, Pages 311-316 March 2004

58) Lotta E Haavisto, M.D. and Jukka I Sipila, M.D.
Acoustic rhinometry in children: Some practical aspects and influence of age and
body surface area on results
Am J Rhinol 22, 416-419, 2008

59) Dokic D, Karlinski D, Isjanovska R, Trajkovska-Dokic E and Filipce I
Measuring nasal volumes with acoustic rhinometry
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60) Erickson et al. Journal of Otolaryngology – Head and Neck Surgery (201) 45:2
DOI 10.1186/s40463-016-0115-9 Acoustic rhinometry and video endoscopic
scoring to evaluate postoperative outcomes in endonasal spreader graft surgery
with septoplasty and turbinoplasty for nasal valve collapse

61) Krager Intefr Med Int 2015;2:129-138 DOI10.1159/000440837 The Impact of
School Environment on Children’s Respiratory Health

62) Clinical and Experimental Otorhinolaryngology Vol. 5, No. 3: 156-160,
September 2012 Intersession Repeatability of Acoustic Rhinometry
Measurements in Healthy Volunteers Mohammed Dhafer Al Ahmari,
MS·Jadwiga Anna Wedzicha, MD·John Robert Hurst, PhD Academic Unit of
Respiratory Medicine, UCL Medical School, London, UK

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