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Rabbit tympanic membrane thickness distribution obtained via optical coherence tomography.

Pieter Livens1, Joris J J Dirckx1

  • 1Laboratory of Biomedical Physics (BIMEF), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.

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|January 21, 2023
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Summary
This summary is machine-generated.

Rabbit tympanic membrane (TM) thickness varies significantly, being thickest at the umbo and thinner towards the annulus. This detailed TM thickness mapping aids in understanding its function and improving computational models.

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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Anatomy

Background:

  • Accurate tympanic membrane (TM) thickness is vital for understanding its functional properties.
  • TM thickness variations significantly impact the accuracy of computational models.
  • Rabbit TM data provides a valuable comparative model for human TM research.

Purpose of the Study:

  • To precisely map the thickness distribution of the rabbit tympanic membrane (TM).
  • To analyze variations in TM thickness across different regions.
  • To compare rabbit TM thickness with existing human TM data.

Main Methods:

  • Utilized optical coherence tomography (OCT) to image ten domestic New Zealand rabbit TMs.
  • Computed ten TM thickness distribution maps from the OCT data.
  • Quantified TM thickness at the umbo, mid-way annulus, and annulus regions.

Main Results:

  • Rabbit TM thickness is greatest at the umbo (150 ± 32 µm).
  • Thickness decreases towards the annulus, reaching 38 ± 7 µm mid-way, then increases to 54 ± 19 µm at the annulus.
  • Rabbit TM thickness distribution is highly symmetrical, unlike the human TM.

Conclusions:

  • Established detailed TM thickness distribution maps for rabbits.
  • Highlighted differences in TM thickness between rabbits and humans, particularly at the annulus.
  • Findings enhance the understanding of rabbit TM structure and improve numerical TM dynamical models.