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The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation

PURPOSE: The aim of this study was to investigate the effect of reduced radiation doses on the image quality of cone-beam computed tomography scans and the suitability of such imaging for orthodontics, oral surgery, dental implantology, periodontology, and endodontology. MATERIALS AND METHODS: Cone-...

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Autores principales: Houfrar, Jan, Ludwig, Bjorn, Bister, Dirk, Nienkemper, Manuel, Abkai, Ciamak, Venugopal, Adith
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8906961/
https://www.ncbi.nlm.nih.gov/pubmed/35281593
http://dx.doi.org/10.1155/2022/7031269
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author Houfrar, Jan
Ludwig, Bjorn
Bister, Dirk
Nienkemper, Manuel
Abkai, Ciamak
Venugopal, Adith
author_facet Houfrar, Jan
Ludwig, Bjorn
Bister, Dirk
Nienkemper, Manuel
Abkai, Ciamak
Venugopal, Adith
author_sort Houfrar, Jan
collection PubMed
description PURPOSE: The aim of this study was to investigate the effect of reduced radiation doses on the image quality of cone-beam computed tomography scans and the suitability of such imaging for orthodontics, oral surgery, dental implantology, periodontology, and endodontology. MATERIALS AND METHODS: Cone-beam computed tomography scans of a live patient were performed using seven attenuation filters with increased thickness to decrease the effective radiation dose from 22.4 to 1.8 μSv, and the effects of different radiation doses on image quality were further analysed. Quantitative image quality was calculated using dedicated measures, such as signal and contrast-to-noise ratio and sharpness. A panel of five certified raters assessed the cone-beam computed tomography scans qualitatively. Nine anatomical structures relevant to dentistry were identified, and the overall acceptance was assessed. RESULTS: Linear reduction of the effective radiation dose had a nonlinear effect on image quality. A 5-fold reduction in the effective dose led to acceptable quantitative and qualitative image quality measures, and the identification rate of dental anatomical structures was 80% or greater. The use of less than 40% of the reference dose was unacceptable for all dental specialties. CONCLUSIONS: The ideal radiation dose for specific diagnostic requirements remains a patient-related and specialty-related decision that must be made on an individual basis. Based on the results of this study, it is possible to reduce exposure in selected patients, and at the same time obtain sufficient quality of images for clinical purposes.
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spelling pubmed-89069612022-03-10 The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation Houfrar, Jan Ludwig, Bjorn Bister, Dirk Nienkemper, Manuel Abkai, Ciamak Venugopal, Adith Biomed Res Int Research Article PURPOSE: The aim of this study was to investigate the effect of reduced radiation doses on the image quality of cone-beam computed tomography scans and the suitability of such imaging for orthodontics, oral surgery, dental implantology, periodontology, and endodontology. MATERIALS AND METHODS: Cone-beam computed tomography scans of a live patient were performed using seven attenuation filters with increased thickness to decrease the effective radiation dose from 22.4 to 1.8 μSv, and the effects of different radiation doses on image quality were further analysed. Quantitative image quality was calculated using dedicated measures, such as signal and contrast-to-noise ratio and sharpness. A panel of five certified raters assessed the cone-beam computed tomography scans qualitatively. Nine anatomical structures relevant to dentistry were identified, and the overall acceptance was assessed. RESULTS: Linear reduction of the effective radiation dose had a nonlinear effect on image quality. A 5-fold reduction in the effective dose led to acceptable quantitative and qualitative image quality measures, and the identification rate of dental anatomical structures was 80% or greater. The use of less than 40% of the reference dose was unacceptable for all dental specialties. CONCLUSIONS: The ideal radiation dose for specific diagnostic requirements remains a patient-related and specialty-related decision that must be made on an individual basis. Based on the results of this study, it is possible to reduce exposure in selected patients, and at the same time obtain sufficient quality of images for clinical purposes. Hindawi 2022-03-02 /pmc/articles/PMC8906961/ /pubmed/35281593 http://dx.doi.org/10.1155/2022/7031269 Text en Copyright © 2022 Jan Houfrar et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Houfrar, Jan
Ludwig, Bjorn
Bister, Dirk
Nienkemper, Manuel
Abkai, Ciamak
Venugopal, Adith
The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation
title The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation
title_full The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation
title_fullStr The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation
title_full_unstemmed The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation
title_short The Effects of Additional Filtration on Image Quality and Radiation Dose in Cone Beam CT: An In Vivo Preliminary Investigation
title_sort effects of additional filtration on image quality and radiation dose in cone beam ct: an in vivo preliminary investigation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8906961/
https://www.ncbi.nlm.nih.gov/pubmed/35281593
http://dx.doi.org/10.1155/2022/7031269
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