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Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography

PURPOSE: The purpose of this study was to evaluate the accuracy of linear measurements in the horizontal and vertical dimensions based on object position and slice inclination in cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS: Ten dry sheep hemi-mandibles, each with 4 sites (inci...

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Autores principales: Vadiati Saberi, Bardia, Khosravifard, Negar, Nourzadeh, Alireza
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Academy of Oral and Maxillofacial Radiology 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078408/
https://www.ncbi.nlm.nih.gov/pubmed/32206619
http://dx.doi.org/10.5624/isd.2020.50.1.37
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author Vadiati Saberi, Bardia
Khosravifard, Negar
Nourzadeh, Alireza
author_facet Vadiati Saberi, Bardia
Khosravifard, Negar
Nourzadeh, Alireza
author_sort Vadiati Saberi, Bardia
collection PubMed
description PURPOSE: The purpose of this study was to evaluate the accuracy of linear measurements in the horizontal and vertical dimensions based on object position and slice inclination in cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS: Ten dry sheep hemi-mandibles, each with 4 sites (incisor, canine, premolar, and molar), were evaluated when either centrally or peripherally positioned within the field of view (FOV) with the image slices subjected to either oblique or orthogonal inclinations. Four types of images were created of each region: central/cross-sectional, central/coronal, peripheral/cross-sectional, and peripheral/coronal. The horizontal and vertical dimensions were measured for each region of each image type. Direct measurements of each region were obtained using a digital caliper in both horizontal and vertical dimensions. CBCT and direct measurements were compared using the Bland-Altman plot method. P values <0.05 were considered to indicate statistical significance. RESULTS: The buccolingual dimension of the incisor and premolar areas and the height of the incisor, canine, and molar areas showed statistically significant differences on the peripheral/coronal images compared to the direct measurements (P<0.05). Molar area height in the central/coronal slices also differed significantly from the direct measurements (P<0.05). Cross-sectional images of either the central or peripheral position had no marked difference from the gold-standard values, indicating sufficient accuracy. CONCLUSION: Peripheral object positioning within the FOV in combination with applying an orthogonal inclination to the slices resulted in significant inaccuracies in the horizontal and vertical measurements. The most undesirable effect was observed in the molar area and the vertical dimension.
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spelling pubmed-70784082020-03-23 Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography Vadiati Saberi, Bardia Khosravifard, Negar Nourzadeh, Alireza Imaging Sci Dent Original Article PURPOSE: The purpose of this study was to evaluate the accuracy of linear measurements in the horizontal and vertical dimensions based on object position and slice inclination in cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS: Ten dry sheep hemi-mandibles, each with 4 sites (incisor, canine, premolar, and molar), were evaluated when either centrally or peripherally positioned within the field of view (FOV) with the image slices subjected to either oblique or orthogonal inclinations. Four types of images were created of each region: central/cross-sectional, central/coronal, peripheral/cross-sectional, and peripheral/coronal. The horizontal and vertical dimensions were measured for each region of each image type. Direct measurements of each region were obtained using a digital caliper in both horizontal and vertical dimensions. CBCT and direct measurements were compared using the Bland-Altman plot method. P values <0.05 were considered to indicate statistical significance. RESULTS: The buccolingual dimension of the incisor and premolar areas and the height of the incisor, canine, and molar areas showed statistically significant differences on the peripheral/coronal images compared to the direct measurements (P<0.05). Molar area height in the central/coronal slices also differed significantly from the direct measurements (P<0.05). Cross-sectional images of either the central or peripheral position had no marked difference from the gold-standard values, indicating sufficient accuracy. CONCLUSION: Peripheral object positioning within the FOV in combination with applying an orthogonal inclination to the slices resulted in significant inaccuracies in the horizontal and vertical measurements. The most undesirable effect was observed in the molar area and the vertical dimension. Korean Academy of Oral and Maxillofacial Radiology 2020-03 2020-03-17 /pmc/articles/PMC7078408/ /pubmed/32206619 http://dx.doi.org/10.5624/isd.2020.50.1.37 Text en Copyright © 2020 by Korean Academy of Oral and Maxillofacial Radiology http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Vadiati Saberi, Bardia
Khosravifard, Negar
Nourzadeh, Alireza
Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
title Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
title_full Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
title_fullStr Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
title_full_unstemmed Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
title_short Effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
title_sort effect of slice inclination and object position within the field of view on the measurement accuracy of potential implant sites on cone-beam computed tomography
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078408/
https://www.ncbi.nlm.nih.gov/pubmed/32206619
http://dx.doi.org/10.5624/isd.2020.50.1.37
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