Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging
Introduction: The present study evaluated the consistency and reliability of five anatomical landmarks in the external auditory meatus using CBCT (cone beam computed tomography) scans. The goal was to determine if these landmarks could reliably replace the commonly used point Porion for superimposin...
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Elsevier
2024-11-01
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| Series: | Translational Research in Anatomy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214854X24000645 |
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| author | Fernanda Sanders-Mello Julius de Schwartz Jan Harm Koolstra |
| author_facet | Fernanda Sanders-Mello Julius de Schwartz Jan Harm Koolstra |
| author_sort | Fernanda Sanders-Mello |
| collection | DOAJ |
| description | Introduction: The present study evaluated the consistency and reliability of five anatomical landmarks in the external auditory meatus using CBCT (cone beam computed tomography) scans. The goal was to determine if these landmarks could reliably replace the commonly used point Porion for superimposing CBCT scans in clinical practice. Consistent anatomical features in the external auditory meatus are essential for accurate cranial assessments in dentistry and medicine. Despite their importance, these features have been underexplored, making this study a valuable contribution to improving clinical evaluation accuracy. Materials and methods: 22 CBCT scans were analyzed using ITK-Snap software. The shape of the External Auditory Meatus had been rendered by segmentation. These segmentations were used as a basis to locate the landmarks. The spread in location of the suggested landmarks concerning a reference coordinate system was treated as a measure for consistency. For that purpose, the absolute mean distance from all registered landmarks to the center of the location cloud was calculated for each dataset. Results: The smallest spread in locations was measured for the so-called Epitympanic Notch, with 4.3 mm on average (SD 1.7). However, recognizing this landmark in the segmented images appeared to be relatively difficult. The landmark with the second smallest spread in locations (4.4 mm (SD 2.2)) and an easier recognition in the segmented image was the most superior point of the external auditory meatus. The most inferior point appeared to be the least reliable of all five landmarks. Conclusion: Based on the present study, a consistently reliable landmark in the External Auditory Meatus to replace point Porion could not be identified. The hypothesis that any landmark could suffice for superimposing CBCT scans was not confirmed. |
| format | Article |
| id | doaj-art-3c0dc8f04c7a4fa998b3cb614759f174 |
| institution | Kabale University |
| issn | 2214-854X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Translational Research in Anatomy |
| spelling | doaj-art-3c0dc8f04c7a4fa998b3cb614759f1742024-11-16T05:11:21ZengElsevierTranslational Research in Anatomy2214-854X2024-11-0137100340Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imagingFernanda Sanders-Mello0Julius de Schwartz1Jan Harm Koolstra2Corresponding author. Gustav Mahlerlaan 3004 1081 LA, Amsterdam, the Netherlands.; Department of Orofacial Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The NetherlandsDepartment of Orofacial Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The NetherlandsDepartment of Orofacial Anatomy, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam, The NetherlandsIntroduction: The present study evaluated the consistency and reliability of five anatomical landmarks in the external auditory meatus using CBCT (cone beam computed tomography) scans. The goal was to determine if these landmarks could reliably replace the commonly used point Porion for superimposing CBCT scans in clinical practice. Consistent anatomical features in the external auditory meatus are essential for accurate cranial assessments in dentistry and medicine. Despite their importance, these features have been underexplored, making this study a valuable contribution to improving clinical evaluation accuracy. Materials and methods: 22 CBCT scans were analyzed using ITK-Snap software. The shape of the External Auditory Meatus had been rendered by segmentation. These segmentations were used as a basis to locate the landmarks. The spread in location of the suggested landmarks concerning a reference coordinate system was treated as a measure for consistency. For that purpose, the absolute mean distance from all registered landmarks to the center of the location cloud was calculated for each dataset. Results: The smallest spread in locations was measured for the so-called Epitympanic Notch, with 4.3 mm on average (SD 1.7). However, recognizing this landmark in the segmented images appeared to be relatively difficult. The landmark with the second smallest spread in locations (4.4 mm (SD 2.2)) and an easier recognition in the segmented image was the most superior point of the external auditory meatus. The most inferior point appeared to be the least reliable of all five landmarks. Conclusion: Based on the present study, a consistently reliable landmark in the External Auditory Meatus to replace point Porion could not be identified. The hypothesis that any landmark could suffice for superimposing CBCT scans was not confirmed.http://www.sciencedirect.com/science/article/pii/S2214854X24000645Cone beam computed tomographyExternal auditory meatusAnatomical landmarksThree-dimensional imagingConsistency |
| spellingShingle | Fernanda Sanders-Mello Julius de Schwartz Jan Harm Koolstra Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging Translational Research in Anatomy Cone beam computed tomography External auditory meatus Anatomical landmarks Three-dimensional imaging Consistency |
| title | Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging |
| title_full | Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging |
| title_fullStr | Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging |
| title_full_unstemmed | Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging |
| title_short | Evaluation of anatomical landmark consistency in the external auditory meatus using cone-beam computed tomography (CBCT) imaging |
| title_sort | evaluation of anatomical landmark consistency in the external auditory meatus using cone beam computed tomography cbct imaging |
| topic | Cone beam computed tomography External auditory meatus Anatomical landmarks Three-dimensional imaging Consistency |
| url | http://www.sciencedirect.com/science/article/pii/S2214854X24000645 |
| work_keys_str_mv | AT fernandasandersmello evaluationofanatomicallandmarkconsistencyintheexternalauditorymeatususingconebeamcomputedtomographycbctimaging AT juliusdeschwartz evaluationofanatomicallandmarkconsistencyintheexternalauditorymeatususingconebeamcomputedtomographycbctimaging AT janharmkoolstra evaluationofanatomicallandmarkconsistencyintheexternalauditorymeatususingconebeamcomputedtomographycbctimaging |