An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans
Objective: To describe the cochlear anatomy among Filipinos through high resolution computed tomography (HRCT) imaging. Methods: Design: Retrospective Study Setting: Tertiary Private University Hospital Patients: Cochlear images retrospectively obtained from computed tomography (...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Philippine Society of Otolaryngology-Head and Neck Surgery, Inc.
2011-06-01
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| Series: | Philippine Journal of Otolaryngology Head and Neck Surgery |
| Subjects: | |
| Online Access: | https://pjohns.pso-hns.org/index.php/pjohns/article/view/591 |
| _version_ | 1811257894031589376 |
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| author | Adrian F. Fernando Brian Joseph dG. De Jesus Alejandro P. Opulencia Gil M. Maglalang Antoio H. Chua |
| author_facet | Adrian F. Fernando Brian Joseph dG. De Jesus Alejandro P. Opulencia Gil M. Maglalang Antoio H. Chua |
| author_sort | Adrian F. Fernando |
| collection | DOAJ |
| description | Objective: To describe the cochlear anatomy among Filipinos through high resolution computed
tomography (HRCT) imaging.
Methods:
Design: Retrospective Study
Setting: Tertiary Private University Hospital
Patients: Cochlear images retrospectively obtained from computed tomography (CT) scans of subjects who underwent cranial, facial, paranasal sinus and temporal bone computed tomography from October 2009 to July 2010 were reconstructed and analyzed.
Results: 388 cochlear images were obtained from the scans of 194 subjects (101 males and 93 females, aged 1 to 90 years old, mean = 52 years) and reconstructed for analysis. The mean coiled cochlear height measured 4.36 mm on the right (A.D.) and 4.34 mm on the left (A.S.). Measurement from the oval window to the distal end of the basal turn (equivalent to the horizontal dimension of the cochlea or the mean length of the basal turn) was 7.55 mm A.D. and 7.60 mm A.S. The vertical and horizontal dimensions of right and left cochleas were identical in all subjects (S.D. = 0.35). The right and left cochlear turns were identical in each subject, exhibiting 2 ½ turns in 92.3% of subjects and 2 ¾ turns in 7.7% of subjects.The cochlear dimensions were similar in all subjects, regardless of age. No cochlear ossification or malformation was noted on any CT image.
Conclusion: The 7.55 mm mean length of the cochlear basal turn among Filipinos in this study was 1.24 mm shorter than the average length of the basal turn of 8.81 mm reported elsewhere. Further studies of the cochlear dimensions in specific age groups and its correlation to audiometric status are recommended to determine other significant physiologic correlations.
Keywords: cochlea, cochlear turn, high-resolution computed tomography (HRCT), magnetic resonance imaging (MRI) |
| first_indexed | 2024-04-12T18:04:44Z |
| format | Article |
| id | doaj.art-d986ebd6622c4802be17e9d3beff42c0 |
| institution | Directory Open Access Journal |
| issn | 1908-4889 2094-1501 |
| language | English |
| last_indexed | 2024-04-12T18:04:44Z |
| publishDate | 2011-06-01 |
| publisher | Philippine Society of Otolaryngology-Head and Neck Surgery, Inc. |
| record_format | Article |
| series | Philippine Journal of Otolaryngology Head and Neck Surgery |
| spelling | doaj.art-d986ebd6622c4802be17e9d3beff42c02022-12-22T03:22:02ZengPhilippine Society of Otolaryngology-Head and Neck Surgery, Inc.Philippine Journal of Otolaryngology Head and Neck Surgery1908-48892094-15012011-06-0126110.32412/pjohns.v26i1.591An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography ScansAdrian F. Fernando0Brian Joseph dG. De Jesus1Alejandro P. Opulencia2Gil M. Maglalang3Antoio H. Chua4Department of Otorhinolaryngology Head and Neck Surgery University of the East – Ramon Magsaysay Memorial Medical Center Inc.Department of Radiology University of the East – Ramon Magsaysay Memorial Medical Center Inc.Department of Otorhinolaryngology Head and Neck Surgery University of the East – Ramon Magsaysay Memorial Medical Center Inc.Department of Radiology University of the East – Ramon Magsaysay Memorial Medical Center Inc.Department of Otorhinolaryngology Head and Neck Surgery University of the East – Ramon Magsaysay Memorial Medical Center Inc.; Department of Otorhinolaryngology Head and Neck Surgery Jose R. Reyes Memorial Medical CenterObjective: To describe the cochlear anatomy among Filipinos through high resolution computed tomography (HRCT) imaging. Methods: Design: Retrospective Study Setting: Tertiary Private University Hospital Patients: Cochlear images retrospectively obtained from computed tomography (CT) scans of subjects who underwent cranial, facial, paranasal sinus and temporal bone computed tomography from October 2009 to July 2010 were reconstructed and analyzed. Results: 388 cochlear images were obtained from the scans of 194 subjects (101 males and 93 females, aged 1 to 90 years old, mean = 52 years) and reconstructed for analysis. The mean coiled cochlear height measured 4.36 mm on the right (A.D.) and 4.34 mm on the left (A.S.). Measurement from the oval window to the distal end of the basal turn (equivalent to the horizontal dimension of the cochlea or the mean length of the basal turn) was 7.55 mm A.D. and 7.60 mm A.S. The vertical and horizontal dimensions of right and left cochleas were identical in all subjects (S.D. = 0.35). The right and left cochlear turns were identical in each subject, exhibiting 2 ½ turns in 92.3% of subjects and 2 ¾ turns in 7.7% of subjects.The cochlear dimensions were similar in all subjects, regardless of age. No cochlear ossification or malformation was noted on any CT image. Conclusion: The 7.55 mm mean length of the cochlear basal turn among Filipinos in this study was 1.24 mm shorter than the average length of the basal turn of 8.81 mm reported elsewhere. Further studies of the cochlear dimensions in specific age groups and its correlation to audiometric status are recommended to determine other significant physiologic correlations. Keywords: cochlea, cochlear turn, high-resolution computed tomography (HRCT), magnetic resonance imaging (MRI)https://pjohns.pso-hns.org/index.php/pjohns/article/view/591cochleacochlear turnhigh-resolution computed tomography (HRCT)magnetic resonance imaging (MRI) |
| spellingShingle | Adrian F. Fernando Brian Joseph dG. De Jesus Alejandro P. Opulencia Gil M. Maglalang Antoio H. Chua An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans Philippine Journal of Otolaryngology Head and Neck Surgery cochlea cochlear turn high-resolution computed tomography (HRCT) magnetic resonance imaging (MRI) |
| title | An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans |
| title_full | An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans |
| title_fullStr | An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans |
| title_full_unstemmed | An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans |
| title_short | An Anatomical Study of the Cochlea among Filipinos using High-Resolution Computed Tomography Scans |
| title_sort | anatomical study of the cochlea among filipinos using high resolution computed tomography scans |
| topic | cochlea cochlear turn high-resolution computed tomography (HRCT) magnetic resonance imaging (MRI) |
| url | https://pjohns.pso-hns.org/index.php/pjohns/article/view/591 |
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