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Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging
BACKGROUND: Many clinical and experimental studies have been done to analyze the anatomical and functional aspects of the internal auditory canal (IAC) in human beings since there are great inter-individual variability and structural variations that may occur regarding the other adjacent structures....
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Kowsar
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3522352/ https://www.ncbi.nlm.nih.gov/pubmed/23329967 http://dx.doi.org/10.5812/iranjradiol.7849 |
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author | Marques, Sergio Ricardo Ajzen, Sergio D´Ippolito, Giuseppe Alonso, Luis Isotani, Sadao Lederman, Henrique |
author_facet | Marques, Sergio Ricardo Ajzen, Sergio D´Ippolito, Giuseppe Alonso, Luis Isotani, Sadao Lederman, Henrique |
author_sort | Marques, Sergio Ricardo |
collection | PubMed |
description | BACKGROUND: Many clinical and experimental studies have been done to analyze the anatomical and functional aspects of the internal auditory canal (IAC) in human beings since there are great inter-individual variability and structural variations that may occur regarding the other adjacent structures. OBJECTIVES: The purpose of this study was to characterize the morphology of the internal auditory canal (IAC) during development using high resolution computed tomography (CT) and to analyze its dimensions, which will be determined by measuring the nearby areas and structures using a system of digital image processing. PATIENTS AND METHODS: CT images of the IAC of 110 normal subjects aged 1 to 92 years (mean age, 46.5 years) of both genders were reviewed to determine the shape, area, opening width (OW), longitudinal length (LL), vertical diameter (VD) and distance from the vestibular aqueduct. RESULTS: The shapes observed in children and adults were funnel-shaped (74% and 58.3%, respectively), cylindrical (22% and 30.9%, respectively) and bud-shaped (4% and 10.8%, respectively). The measurements by CT in children were: area= 50.30 mm(2), OW = 7.53 mm, length = 11.17 mm, VD = 4.82 mm and the distance between the IAC and the vestibular aqueduct (VA) = 12.63 mm. In adults, the measurements were: area = 44.64 mm(2), OW = 7.10 mm, length = 9.84 mm, VD = 4.47 mm and the distance between IAC and VA = 11.17 mm. CONCLUSIONS: CT images showed that the IAC has different shapes and when the measurements obtained for children were compared with those of adults, the parameters that presented statistically significant differences in either gender were length and diameter. |
format | Online Article Text |
id | pubmed-3522352 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Kowsar |
record_format | MEDLINE/PubMed |
spelling | pubmed-35223522013-01-17 Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging Marques, Sergio Ricardo Ajzen, Sergio D´Ippolito, Giuseppe Alonso, Luis Isotani, Sadao Lederman, Henrique Iran J Radiol Head & Neck Imaging BACKGROUND: Many clinical and experimental studies have been done to analyze the anatomical and functional aspects of the internal auditory canal (IAC) in human beings since there are great inter-individual variability and structural variations that may occur regarding the other adjacent structures. OBJECTIVES: The purpose of this study was to characterize the morphology of the internal auditory canal (IAC) during development using high resolution computed tomography (CT) and to analyze its dimensions, which will be determined by measuring the nearby areas and structures using a system of digital image processing. PATIENTS AND METHODS: CT images of the IAC of 110 normal subjects aged 1 to 92 years (mean age, 46.5 years) of both genders were reviewed to determine the shape, area, opening width (OW), longitudinal length (LL), vertical diameter (VD) and distance from the vestibular aqueduct. RESULTS: The shapes observed in children and adults were funnel-shaped (74% and 58.3%, respectively), cylindrical (22% and 30.9%, respectively) and bud-shaped (4% and 10.8%, respectively). The measurements by CT in children were: area= 50.30 mm(2), OW = 7.53 mm, length = 11.17 mm, VD = 4.82 mm and the distance between the IAC and the vestibular aqueduct (VA) = 12.63 mm. In adults, the measurements were: area = 44.64 mm(2), OW = 7.10 mm, length = 9.84 mm, VD = 4.47 mm and the distance between IAC and VA = 11.17 mm. CONCLUSIONS: CT images showed that the IAC has different shapes and when the measurements obtained for children were compared with those of adults, the parameters that presented statistically significant differences in either gender were length and diameter. Kowsar 2012-06 2012-06-30 /pmc/articles/PMC3522352/ /pubmed/23329967 http://dx.doi.org/10.5812/iranjradiol.7849 Text en Copyright © 2012, Tehran University of Medical Sciences and Iranian Society of Radiology http://creativecommons.org/licenses/by/3/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Head & Neck Imaging Marques, Sergio Ricardo Ajzen, Sergio D´Ippolito, Giuseppe Alonso, Luis Isotani, Sadao Lederman, Henrique Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging |
title | Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging |
title_full | Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging |
title_fullStr | Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging |
title_full_unstemmed | Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging |
title_short | Morphometric Analysis of the Internal Auditory Canal by Computed Tomography Imaging |
title_sort | morphometric analysis of the internal auditory canal by computed tomography imaging |
topic | Head & Neck Imaging |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3522352/ https://www.ncbi.nlm.nih.gov/pubmed/23329967 http://dx.doi.org/10.5812/iranjradiol.7849 |
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