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Morphometric measurements of the internal acoustic meatus

Year 2019, Volume: 44 Issue: Supplement 1, 419 - 426, 29.12.2019
https://doi.org/10.17826/cumj.565954

Abstract

Purpose: This study was aimed to determine the morphometry of internal acoustic meatus in healthy Turkish population aged between 18-60 years.

Materials and Methods: This study which was a retrospective study, was carried out from the 142 healthy adult subjects (59 females; 83 males) aged 18-60 years. Subjects had undergone routine test in the Radiology Department. 

Results: The groups were divided into four groups according to age. The overall means of the measurements were: the internal acoustic meatus length 9.71 mm (R) and 9.92 mm (L); the internal acoustic meatus width 3.97 mm (R) and 3.95 mm (L); the internal acoustic meatus height 4.65 mm (R) and 4.66 mm (L) in females, respectively. The same dimensions were found 9.61 mm (R) and 9.87 mm (L); 4.18 mm (R) and 4.15 mm (L); 5.13 ±0.85 mm (R) and 5.13±0.90 mm (L) in males, respectively. Also, the ratio of IAM’width to height was calculated 0.860±0.125 and 0.825±0.137 in females and males in right side, respectively  whereas in left side the corresponding value was 0.855±0.125 and 0.820±0.142 in females and males, respectively.

Conclusion: Knowledge of the normal dimensions of the internal acoustic meatus is more important for determination of the clinical and tumor processes. 


References

  • 1. Stranding S. Gray’s Anatomy. The anatomical basis of clinical practice. 40th Ed. New York: Elsevier Limited: 2016.
  • 2. Moore KL, Dalley AF. Clinically oriented anatomy. Fourth Ed. Canada: Lippincolt Williams&Wilkins;1999.
  • 3. Özocak O, Unur E, Ülger H, Ekinci N, Aycan K, Acer N. Meatus acusticus internus’un morfometrisi ve varyasyonları. Erciyes Üniversitesi Sağlık Bilimleri Dergisi. 2004;13(3) 1-7.
  • 4. Kobayashi H, Zusho H. Measurements of internal auditory meatus by polytomography. The British Journal of Radiology 1987; 60 (711): 209-14.
  • 5. Farahani RM, Nooranipour M, Nikakhtar KV. Anthropometry of Internal Acoustic Meatus. Int. J. Morphol., 2007;25(4):861-865.
  • 6. Berlis A, Putz R, Schumacher M. Direct and CT measurements of canals and foramina of the skull base. The British Journal of Radiology. 1992;65, 653-61.
  • 7. Mamatha Y, Trisha KR, Kumar V. Anthropometry of internal acoustic meatus in dry adult human skull using casting method. Int J Anat Res., 2019;7(1.1):6113-18.
  • 8. Erkoç MF, Ímamoglu H, Okur A, Gümüş C, Dogan M. Normative size evaluation of internal auditory canal with magnetic resonance imaging: review of 3786 patients. Folia Morphol. 2012; 71(4): 217–20.
  • 9. Glastonbury CM, Davidson HC, Ric Harnsberger H, Butler J, Kertesz TR, Shelton C. Imaging Findings of Cochlear Nerve Deficiency. Am J Neuroradiol. 2002; 23:635-43.
  • 10. Mishra LCAK, Mehta LCAK, Singh BH. Hypoplasia of Internal Acoustic Meatus. Med J Armed Forces India. 2006 Apr; 62(2): 196-7.
  • 11. Stjernholm C, Muren C. Dimensions of the Cochlear Nerve Canal: A Radioanatomic Investigation. Acta Otolaryngol. 2002; 122: 43–48.
  • 12. Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging Sergio Ricardo Marques 1*, Sergio Ajzen 2, Giuseppe D´Ippolito 2, Luis Alonso 1, Sadao Isotani 3, Henrique Lederman. Iranian journal of radiology. 2012;9(2):71-8.
  • 13. Sakashita T, Sando I. Postnatal development of the internalauditory canal studied bycomputer-aided three-dimensional reconstruction and measurement. Ann otol rhinol laryngol. 1995;104:469-75.
  • 14. Akbal İ. Meatus acusticus internus boyutları ile orta kulaktaki varyasyon ilişkilerinin incelenmesi. Afyon Kocatepe Üniversitesi Sağlık Bilimleri Enstitüsü. Yüksek Lisans Tezi. 2015, Afyon.
  • 15. Yücel AH. Dere Anatomi Atlası ve Ders Kitabı. 7.baskı; Adana: Akademisyen Kitabevi; 2018.

Meatus acusticus internus’un morfometrik ölçümleri

Year 2019, Volume: 44 Issue: Supplement 1, 419 - 426, 29.12.2019
https://doi.org/10.17826/cumj.565954

Abstract

Amaç: Bu çalışma 18-60 yaş arası sağlıklı Türk popülasyonunda meatus acusticus internus morfometrisini belirlemek amaçlandı.  

Gereç ve Yöntem: Yaşları 18-60 arasında değişen yüz kırk iki sağlıklı yetişkin kişilerle (59 kadın, 83 erkek) yürütülen bu çalışma retrospektif bir çalışmadır. Çalışmaya katılan kişiler Radioloji bölümüne rutin test yaptırmak için gelen kişilerdi. 

Bulgular: Gruplar yaşa göre 4 gruba ayrıldı. Bütün ölçümlerin ortalamaları kadınlarda sırasıyla meatus acusticus internus uzunluğu 9,71 mm (sağ) ve 9,92 mm (sol); meatus acusticus internus genişliği 3,97 mm (sağ) ve 3,95 mm (sol); meatus acusticus internus yükseklik 4,65 mm (sağ) ve 4,66 mm (sol) iken aynı ölçümler erkeklerde sırasıyla 9,61 mm (sağ) ve 9,87 mm (sol); 4,18 mm (sağ) ve 4,15 mm (sol); 5,13 ±0,85 mm (sağ) ve 5,13±0,90 mm (sol) olarak bulunmuştur. Aynı zamanda, sağ tarafta meatus acusticus internus genişliğinin yüksekliğe oranı kadınlarda ve erkeklerde sırasıyla 0.860±0.125 ve 0.825±0.137 olarak hesaplanırken, aynı ölçümler sol tarafta kadınlarda ve erkeklerde sırasıyla 0.855±0.125, ve 0.820±0.142 olarak bulunmuştur.

Sonuç: Meatus acusticus internus’un normal değerlerinin bilinmesi klinik ve tümör gelişiminin değerlendirilmesi açısından oldukça önemlidir. 


References

  • 1. Stranding S. Gray’s Anatomy. The anatomical basis of clinical practice. 40th Ed. New York: Elsevier Limited: 2016.
  • 2. Moore KL, Dalley AF. Clinically oriented anatomy. Fourth Ed. Canada: Lippincolt Williams&Wilkins;1999.
  • 3. Özocak O, Unur E, Ülger H, Ekinci N, Aycan K, Acer N. Meatus acusticus internus’un morfometrisi ve varyasyonları. Erciyes Üniversitesi Sağlık Bilimleri Dergisi. 2004;13(3) 1-7.
  • 4. Kobayashi H, Zusho H. Measurements of internal auditory meatus by polytomography. The British Journal of Radiology 1987; 60 (711): 209-14.
  • 5. Farahani RM, Nooranipour M, Nikakhtar KV. Anthropometry of Internal Acoustic Meatus. Int. J. Morphol., 2007;25(4):861-865.
  • 6. Berlis A, Putz R, Schumacher M. Direct and CT measurements of canals and foramina of the skull base. The British Journal of Radiology. 1992;65, 653-61.
  • 7. Mamatha Y, Trisha KR, Kumar V. Anthropometry of internal acoustic meatus in dry adult human skull using casting method. Int J Anat Res., 2019;7(1.1):6113-18.
  • 8. Erkoç MF, Ímamoglu H, Okur A, Gümüş C, Dogan M. Normative size evaluation of internal auditory canal with magnetic resonance imaging: review of 3786 patients. Folia Morphol. 2012; 71(4): 217–20.
  • 9. Glastonbury CM, Davidson HC, Ric Harnsberger H, Butler J, Kertesz TR, Shelton C. Imaging Findings of Cochlear Nerve Deficiency. Am J Neuroradiol. 2002; 23:635-43.
  • 10. Mishra LCAK, Mehta LCAK, Singh BH. Hypoplasia of Internal Acoustic Meatus. Med J Armed Forces India. 2006 Apr; 62(2): 196-7.
  • 11. Stjernholm C, Muren C. Dimensions of the Cochlear Nerve Canal: A Radioanatomic Investigation. Acta Otolaryngol. 2002; 122: 43–48.
  • 12. Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging Sergio Ricardo Marques 1*, Sergio Ajzen 2, Giuseppe D´Ippolito 2, Luis Alonso 1, Sadao Isotani 3, Henrique Lederman. Iranian journal of radiology. 2012;9(2):71-8.
  • 13. Sakashita T, Sando I. Postnatal development of the internalauditory canal studied bycomputer-aided three-dimensional reconstruction and measurement. Ann otol rhinol laryngol. 1995;104:469-75.
  • 14. Akbal İ. Meatus acusticus internus boyutları ile orta kulaktaki varyasyon ilişkilerinin incelenmesi. Afyon Kocatepe Üniversitesi Sağlık Bilimleri Enstitüsü. Yüksek Lisans Tezi. 2015, Afyon.
  • 15. Yücel AH. Dere Anatomi Atlası ve Ders Kitabı. 7.baskı; Adana: Akademisyen Kitabevi; 2018.
There are 15 citations in total.

Details

Primary Language English
Subjects Anatomy
Journal Section Research
Authors

Sema Özandaç Polat 0000-0003-4695-0514

Ayşe Gül Uygur This is me 0000-0001-7144-8759

Fatma Yasemin Öksüzler This is me 0000-0001-5152-5542

Mahmut Öksüzler This is me 0000-0002-3730-5487

Ahmet Hilmi Yücel This is me 0000-0002-2660-5388

Publication Date December 29, 2019
Acceptance Date August 7, 2019
Published in Issue Year 2019 Volume: 44 Issue: Supplement 1

Cite

MLA Özandaç Polat, Sema et al. “Morphometric Measurements of the Internal Acoustic Meatus”. Cukurova Medical Journal, vol. 44, 2019, pp. 419-26, doi:10.17826/cumj.565954.