The accuracy of linear measurements of maxillary and mandibular edentulous sites in cone-beam computed tomography images with different fields of view and voxel sizes under simulated clinical conditions
Identifieur interne : 000414 ( Pmc/Checkpoint ); précédent : 000413; suivant : 000415The accuracy of linear measurements of maxillary and mandibular edentulous sites in cone-beam computed tomography images with different fields of view and voxel sizes under simulated clinical conditions
Auteurs : Rumpa Ganguly [États-Unis] ; Aruna Ramesh [États-Unis] ; Sarah Pagni [États-Unis]Source :
- Imaging Science in Dentistry [ 2233-7822 ] ; 2016.
Abstract
The objective of this study was to investigate the effect of varying resolutions of cone-beam computed tomography images on the accuracy of linear measurements of edentulous areas in human cadaver heads. Intact cadaver heads were used to simulate a clinical situation.
Fiduciary markers were placed in the edentulous areas of 4 intact embalmed cadaver heads. The heads were scanned with two different CBCT units using a large field of view (13 cm×16 cm) and small field of view (5 cm×8 cm) at varying voxel sizes (0.3 mm, 0.2 mm, and 0.16 mm). The ground truth was established with digital caliper measurements. The imaging measurements were then compared with caliper measurements to determine accuracy.
The Wilcoxon signed rank test revealed no statistically significant difference between the medians of the physical measurements obtained with calipers and the medians of the CBCT measurements. A comparison of accuracy among the different imaging protocols revealed no significant differences as determined by the Friedman test. The intraclass correlation coefficient was 0.961, indicating excellent reproducibility. Inter-observer variability was determined graphically with a Bland-Altman plot and by calculating the intraclass correlation coefficient. The Bland-Altman plot indicated very good reproducibility for smaller measurements but larger discrepancies with larger measurements.
The CBCT-based linear measurements in the edentulous sites using different voxel sizes and FOVs are accurate compared with the direct caliper measurements of these sites. Higher resolution CBCT images with smaller voxel size did not result in greater accuracy of the linear measurements.
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DOI: 10.5624/isd.2016.46.2.93
PubMed: 27358816
PubMed Central: 4925656
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The accuracy of linear measurements of maxillary and mandibular edentulous sites in cone-beam computed tomography images with different fields of view and voxel sizes under simulated clinical conditions</title><author><name sortKey="Ganguly, Rumpa" sort="Ganguly, Rumpa" uniqKey="Ganguly R" first="Rumpa" last="Ganguly">Rumpa Ganguly</name><affiliation wicri:level="2"><nlm:aff id="A1">Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA, USA.</nlm:aff><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA</wicri:regionArea><placeName><region type="state">Massachusetts</region></placeName></affiliation></author><author><name sortKey="Ramesh, Aruna" sort="Ramesh, Aruna" uniqKey="Ramesh A" first="Aruna" last="Ramesh">Aruna Ramesh</name><affiliation wicri:level="2"><nlm:aff id="A2">Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA, USA.</nlm:aff><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA</wicri:regionArea><placeName><region type="state">Massachusetts</region></placeName></affiliation></author><author><name sortKey="Pagni, Sarah" sort="Pagni, Sarah" uniqKey="Pagni S" first="Sarah" last="Pagni">Sarah Pagni</name><affiliation wicri:level="2"><nlm:aff id="A3">Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, MA, USA.</nlm:aff><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, MA</wicri:regionArea><placeName><region type="state">Massachusetts</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">27358816</idno><idno type="pmc">4925656</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4925656</idno><idno type="RBID">PMC:4925656</idno><idno type="doi">10.5624/isd.2016.46.2.93</idno><date when="2016">2016</date><idno type="wicri:Area/Pmc/Corpus">000638</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000638</idno><idno type="wicri:Area/Pmc/Curation">000638</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">000638</idno><idno type="wicri:Area/Pmc/Checkpoint">000414</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000414</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The accuracy of linear measurements of maxillary and mandibular edentulous sites in cone-beam computed tomography images with different fields of view and voxel sizes under simulated clinical conditions</title><author><name sortKey="Ganguly, Rumpa" sort="Ganguly, Rumpa" uniqKey="Ganguly R" first="Rumpa" last="Ganguly">Rumpa Ganguly</name><affiliation wicri:level="2"><nlm:aff id="A1">Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA, USA.</nlm:aff><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA</wicri:regionArea><placeName><region type="state">Massachusetts</region></placeName></affiliation></author><author><name sortKey="Ramesh, Aruna" sort="Ramesh, Aruna" uniqKey="Ramesh A" first="Aruna" last="Ramesh">Aruna Ramesh</name><affiliation wicri:level="2"><nlm:aff id="A2">Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA, USA.</nlm:aff><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA</wicri:regionArea><placeName><region type="state">Massachusetts</region></placeName></affiliation></author><author><name sortKey="Pagni, Sarah" sort="Pagni, Sarah" uniqKey="Pagni S" first="Sarah" last="Pagni">Sarah Pagni</name><affiliation wicri:level="2"><nlm:aff id="A3">Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, MA, USA.</nlm:aff><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, MA</wicri:regionArea><placeName><region type="state">Massachusetts</region></placeName></affiliation></author></analytic><series><title level="j">Imaging Science in Dentistry</title><idno type="ISSN">2233-7822</idno><idno type="eISSN">2233-7830</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Purpose</title><p>The objective of this study was to investigate the effect of varying resolutions of cone-beam computed tomography images on the accuracy of linear measurements of edentulous areas in human cadaver heads. Intact cadaver heads were used to simulate a clinical situation.</p></sec><sec><title>Materials and Methods</title><p>Fiduciary markers were placed in the edentulous areas of 4 intact embalmed cadaver heads. The heads were scanned with two different CBCT units using a large field of view (13 cm×16 cm) and small field of view (5 cm×8 cm) at varying voxel sizes (0.3 mm, 0.2 mm, and 0.16 mm). The ground truth was established with digital caliper measurements. The imaging measurements were then compared with caliper measurements to determine accuracy.</p></sec><sec><title>Results</title><p>The Wilcoxon signed rank test revealed no statistically significant difference between the medians of the physical measurements obtained with calipers and the medians of the CBCT measurements. A comparison of accuracy among the different imaging protocols revealed no significant differences as determined by the Friedman test. The intraclass correlation coefficient was 0.961, indicating excellent reproducibility. Inter-observer variability was determined graphically with a Bland-Altman plot and by calculating the intraclass correlation coefficient. The Bland-Altman plot indicated very good reproducibility for smaller measurements but larger discrepancies with larger measurements. </p></sec><sec><title>Conclusion</title><p>The CBCT-based linear measurements in the edentulous sites using different voxel sizes and FOVs are accurate compared with the direct caliper measurements of these sites. Higher resolution CBCT images with smaller voxel size did not result in greater accuracy of the linear measurements.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Scarfe, Wc" uniqKey="Scarfe W">WC Scarfe</name></author><author><name sortKey="Farman, Ag" uniqKey="Farman A">AG Farman</name></author><author><name sortKey="Sukovic, P" uniqKey="Sukovic P">P Sukovic</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kobayashi, K" uniqKey="Kobayashi K">K Kobayashi</name></author><author><name sortKey="Shimoda, S" uniqKey="Shimoda S">S Shimoda</name></author><author><name sortKey="Nakagawa, Y" uniqKey="Nakagawa Y">Y Nakagawa</name></author><author><name sortKey="Yamamoto, A" uniqKey="Yamamoto A">A Yamamoto</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Lascala, Ca" uniqKey="Lascala C">CA Lascala</name></author><author><name sortKey="Panella, J" uniqKey="Panella J">J Panella</name></author><author><name sortKey="Marques, Mm" uniqKey="Marques M">MM Marques</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Stratemann, Sa" uniqKey="Stratemann S">SA Stratemann</name></author><author><name sortKey="Huang, Jc" uniqKey="Huang J">JC Huang</name></author><author><name sortKey="Maki, K" uniqKey="Maki K">K Maki</name></author><author><name sortKey="Miller, Aj" uniqKey="Miller A">AJ Miller</name></author><author><name sortKey="Hatcher, Dc" uniqKey="Hatcher D">DC Hatcher</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Pinsky, Hm" uniqKey="Pinsky H">HM Pinsky</name></author><author><name sortKey="Dyda, S" uniqKey="Dyda S">S Dyda</name></author><author><name sortKey="Pinsky, Rw" uniqKey="Pinsky R">RW Pinsky</name></author><author><name sortKey="Misch, Ka" uniqKey="Misch K">KA Misch</name></author><author><name sortKey="Sarment, Dp" uniqKey="Sarment D">DP Sarment</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Leung, Cc" uniqKey="Leung C">CC Leung</name></author><author><name sortKey="Palomo, L" uniqKey="Palomo L">L Palomo</name></author><author><name sortKey="Griffith, R" uniqKey="Griffith R">R Griffith</name></author><author><name sortKey="Hans, Mg" uniqKey="Hans M">MG Hans</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Cavalcanti, Mg" uniqKey="Cavalcanti M">MG Cavalcanti</name></author><author><name sortKey="Ruprecht, A" uniqKey="Ruprecht A">A Ruprecht</name></author><author><name sortKey="Vannier, Mw" uniqKey="Vannier M">MW Vannier</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ganguly, R" uniqKey="Ganguly R">R Ganguly</name></author><author><name sortKey="Ruprecht, A" uniqKey="Ruprecht A">A Ruprecht</name></author><author><name sortKey="Vincent, S" uniqKey="Vincent S">S Vincent</name></author><author><name sortKey="Hellstein, J" uniqKey="Hellstein J">J Hellstein</name></author><author><name sortKey="Timmons, S" uniqKey="Timmons S">S Timmons</name></author><author><name sortKey="Qian, F" uniqKey="Qian F">F Qian</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Patcas, R" uniqKey="Patcas R">R Patcas</name></author><author><name sortKey="Markic, G" uniqKey="Markic G">G Markic</name></author><author><name sortKey="Muller, L" uniqKey="Muller L">L Müller</name></author><author><name sortKey="Ullrich, O" uniqKey="Ullrich O">O Ullrich</name></author><author><name sortKey="Peltom Ki, T" uniqKey="Peltom Ki T">T Peltomäki</name></author><author><name sortKey="Kellenberger, Cj" uniqKey="Kellenberger C">CJ Kellenberger</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Panmekiate, S" uniqKey="Panmekiate S">S Panmekiate</name></author><author><name sortKey="Apinhasmit, W" uniqKey="Apinhasmit W">W Apinhasmit</name></author><author><name sortKey="Petersson, A" uniqKey="Petersson A">A Petersson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kamburo Lu, K" uniqKey="Kamburo Lu K">K Kamburoğlu</name></author><author><name sortKey="Kilic, C" uniqKey="Kilic C">C Kiliç</name></author><author><name sortKey="Ozen, T" uniqKey="Ozen T">T Ozen</name></author><author><name sortKey="Yuksel, Sp" uniqKey="Yuksel S">SP Yüksel</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Patcas, R" uniqKey="Patcas R">R Patcas</name></author><author><name sortKey="Muller, L" uniqKey="Muller L">L Müller</name></author><author><name sortKey="Ullrich, O" uniqKey="Ullrich O">O Ullrich</name></author><author><name sortKey="Peltom Ki, T" uniqKey="Peltom Ki T">T Peltomäki</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Patel, S" uniqKey="Patel S">S Patel</name></author><author><name sortKey="Dawood, A" uniqKey="Dawood A">A Dawood</name></author><author><name sortKey="Ford, Tp" uniqKey="Ford T">TP Ford</name></author><author><name sortKey="Whaites, E" uniqKey="Whaites E">E Whaites</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hatcher, Dc" uniqKey="Hatcher D">DC Hatcher</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Watanabe, H" uniqKey="Watanabe H">H Watanabe</name></author><author><name sortKey="Honda, E" uniqKey="Honda E">E Honda</name></author><author><name sortKey="Tetsumura, A" uniqKey="Tetsumura A">A Tetsumura</name></author><author><name sortKey="Kurabayashi, T" uniqKey="Kurabayashi T">T Kurabayashi</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Damstra, J" uniqKey="Damstra J">J Damstra</name></author><author><name sortKey="Fourie, Z" uniqKey="Fourie Z">Z Fourie</name></author><author><name sortKey="Huddleston Slater, Jj" uniqKey="Huddleston Slater J">JJ Huddleston Slater</name></author><author><name sortKey="Ren, Y" uniqKey="Ren Y">Y Ren</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Fleiss, Jl" uniqKey="Fleiss J">JL Fleiss</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Tyndall, Da" uniqKey="Tyndall D">DA Tyndall</name></author><author><name sortKey="Price, Jb" uniqKey="Price J">JB Price</name></author><author><name sortKey="Tetradis, S" uniqKey="Tetradis S">S Tetradis</name></author><author><name sortKey="Ganz, Sd" uniqKey="Ganz S">SD Ganz</name></author><author><name sortKey="Hildebolt, C" uniqKey="Hildebolt C">C Hildebolt</name></author><author><name sortKey="Scarfe, Wc" uniqKey="Scarfe W">WC Scarfe</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Waltrick, Kb" uniqKey="Waltrick K">KB Waltrick</name></author><author><name sortKey="Nunes, De" uniqKey="Nunes D">de Nunes</name></author><author><name sortKey="Correa, M" uniqKey="Correa M">M Corrêa</name></author><author><name sortKey="Zastrow, Md" uniqKey="Zastrow M">MD Zastrow</name></author><author><name sortKey="Dutra, Vd" uniqKey="Dutra V">VD Dutra</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Wyatt, Cc" uniqKey="Wyatt C">CC Wyatt</name></author><author><name sortKey="Pharoah, Mj" uniqKey="Pharoah M">MJ Pharoah</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Torres, Mg" uniqKey="Torres M">MG Torres</name></author><author><name sortKey="Campos, Ps" uniqKey="Campos P">PS Campos</name></author><author><name sortKey="Segundo, Np" uniqKey="Segundo N">NP Segundo</name></author><author><name sortKey="Navarro, M" uniqKey="Navarro M">M Navarro</name></author><author><name sortKey="Crusoe Rebello, I" uniqKey="Crusoe Rebello I">I Crusoe-Rebello</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Stratemann, Sa" uniqKey="Stratemann S">SA Stratemann</name></author><author><name sortKey="Huang, Jc" uniqKey="Huang J">JC Huang</name></author><author><name sortKey="Maki, K" uniqKey="Maki K">K Maki</name></author><author><name sortKey="Miller, Aj" uniqKey="Miller A">AJ Miller</name></author><author><name sortKey="Hatcher, Dc" uniqKey="Hatcher D">DC Hatcher</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Liedke, Gs" uniqKey="Liedke G">GS Liedke</name></author><author><name sortKey="Da Silveira, He" uniqKey="Da Silveira H">HE da Silveira</name></author><author><name sortKey="Da Silveira, Hl" uniqKey="Da Silveira H">HL da Silveira</name></author><author><name sortKey="Dutra, V" uniqKey="Dutra V">V Dutra</name></author><author><name sortKey="De Figueiredo, Ja" uniqKey="De Figueiredo J">JA de Figueiredo</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Patcas, R" uniqKey="Patcas R">R Patcas</name></author><author><name sortKey="Muller, L" uniqKey="Muller L">L Müller</name></author><author><name sortKey="Ullrich, O" uniqKey="Ullrich O">O Ullrich</name></author><author><name sortKey="Peltom Ki, T" uniqKey="Peltom Ki T">T Peltomäki</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kamburo Lu, K" uniqKey="Kamburo Lu K">K Kamburoğlu</name></author><author><name sortKey="Kursun, S" uniqKey="Kursun S">S Kursun</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Da Silveira, Pf" uniqKey="Da Silveira P">PF da Silveira</name></author><author><name sortKey="Vizzotto, Mb" uniqKey="Vizzotto M">MB Vizzotto</name></author><author><name sortKey="Liedke, Gs" uniqKey="Liedke G">GS Liedke</name></author><author><name sortKey="Da Silveira, Hl" uniqKey="Da Silveira H">HL da Silveira</name></author><author><name sortKey="Montagner, F" uniqKey="Montagner F">F Montagner</name></author><author><name sortKey="Da Silveira, He" uniqKey="Da Silveira H">HE da Silveira</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Paes Da Silva Ramos Fernandes, Lm" uniqKey="Paes Da Silva Ramos Fernandes L">LM Paes da Silva Ramos Fernandes</name></author><author><name sortKey="Rice, D" uniqKey="Rice D">D Rice</name></author><author><name sortKey="Ordinola Zapata, R" uniqKey="Ordinola Zapata R">R Ordinola-Zapata</name></author><author><name sortKey="Alvares Capelozza, Al" uniqKey="Alvares Capelozza A">AL Alvares Capelozza</name></author><author><name sortKey="Bramante, Cm" uniqKey="Bramante C">CM Bramante</name></author><author><name sortKey="Jaramillo, D" uniqKey="Jaramillo D">D Jaramillo</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Imaging Sci Dent</journal-id><journal-id journal-id-type="iso-abbrev">Imaging Sci Dent</journal-id><journal-id journal-id-type="publisher-id">ISD</journal-id><journal-title-group><journal-title>Imaging Science in Dentistry</journal-title></journal-title-group><issn pub-type="ppub">2233-7822</issn><issn pub-type="epub">2233-7830</issn><publisher><publisher-name>Korean Academy of Oral and Maxillofacial Radiology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">27358816</article-id><article-id pub-id-type="pmc">4925656</article-id><article-id pub-id-type="doi">10.5624/isd.2016.46.2.93</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>The accuracy of linear measurements of maxillary and mandibular edentulous sites in cone-beam computed tomography images with different fields of view and voxel sizes under simulated clinical conditions</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Ganguly</surname><given-names>Rumpa</given-names></name><xref ref-type="aff" rid="A1">1</xref></contrib><contrib contrib-type="author"><name><surname>Ramesh</surname><given-names>Aruna</given-names></name><xref ref-type="aff" rid="A2">2</xref></contrib><contrib contrib-type="author"><name><surname>Pagni</surname><given-names>Sarah</given-names></name><xref ref-type="aff" rid="A3">3</xref></contrib></contrib-group><aff id="A1"><label>1</label>Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA, USA.</aff><aff id="A2"><label>2</label>Department of Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, Tufts University School of Dental Medicine Boston, MA, USA.</aff><aff id="A3"><label>3</label>Department of Public Health and Community Service, Tufts University School of Dental Medicine, Boston, MA, USA.</aff><author-notes><corresp>Correspondence to: Prof. Rumpa Ganguly. Tufts University School of Dental Medicine, Oral and Maxillofacial Radiology, Department of Diagnostic Sciences, 1 Kneeland Street, DHS215, Boston, MA 02111, USA. Tel) 1-617-636-6813, Fax) 1-617-636-3760, <email>rumpa.ganguly@tufts.edu</email></corresp></author-notes><pub-date pub-type="ppub"><month>6</month><year>2016</year></pub-date><pub-date pub-type="epub"><day>23</day><month>6</month><year>2016</year></pub-date><volume>46</volume><issue>2</issue><fpage>93</fpage><lpage>101</lpage><history><date date-type="received"><day>24</day><month>12</month><year>2015</year></date><date date-type="rev-recd"><day>11</day><month>2</month><year>2016</year></date><date date-type="accepted"><day>19</day><month>2</month><year>2016</year></date></history><permissions><copyright-statement>Copyright © 2016 by Korean Academy of Oral and Maxillofacial Radiology</copyright-statement><copyright-year>2016</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/">http://creativecommons.org/licenses/by-nc/3.0/</ext-link>) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><sec><title>Purpose</title><p>The objective of this study was to investigate the effect of varying resolutions of cone-beam computed tomography images on the accuracy of linear measurements of edentulous areas in human cadaver heads. Intact cadaver heads were used to simulate a clinical situation.</p></sec><sec><title>Materials and Methods</title><p>Fiduciary markers were placed in the edentulous areas of 4 intact embalmed cadaver heads. The heads were scanned with two different CBCT units using a large field of view (13 cm×16 cm) and small field of view (5 cm×8 cm) at varying voxel sizes (0.3 mm, 0.2 mm, and 0.16 mm). The ground truth was established with digital caliper measurements. The imaging measurements were then compared with caliper measurements to determine accuracy.</p></sec><sec><title>Results</title><p>The Wilcoxon signed rank test revealed no statistically significant difference between the medians of the physical measurements obtained with calipers and the medians of the CBCT measurements. A comparison of accuracy among the different imaging protocols revealed no significant differences as determined by the Friedman test. The intraclass correlation coefficient was 0.961, indicating excellent reproducibility. Inter-observer variability was determined graphically with a Bland-Altman plot and by calculating the intraclass correlation coefficient. The Bland-Altman plot indicated very good reproducibility for smaller measurements but larger discrepancies with larger measurements. </p></sec><sec><title>Conclusion</title><p>The CBCT-based linear measurements in the edentulous sites using different voxel sizes and FOVs are accurate compared with the direct caliper measurements of these sites. Higher resolution CBCT images with smaller voxel size did not result in greater accuracy of the linear measurements.</p></sec></abstract><kwd-group><kwd>Cone-Beam Computed Tomography</kwd><kwd>Dental Implants</kwd><kwd>Cadaver</kwd><kwd>Imaging, Diagnostic</kwd></kwd-group><funding-group><award-group><funding-source country="US"><institution-wrap><institution>Tufts University School of Dental Medicine</institution></institution-wrap></funding-source></award-group><award-group><funding-source country="US"><institution-wrap><institution>Nobel Biocare</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><floats-group><fig id="F1" orientation="portrait" position="float"><label>Fig. 1</label><caption><title>Maxillary and mandibular measurement sites on the cone-beam computed tomography images. A. Max R1 is the height of the bone from the floor of the right maxillary sinus to the alveolar crest and Max R2 is the width of the bone at the alveolar crest at the right maxillary molar site. B. Man R1 is the height of the bone from the inferior alveolar nerve (IAN) canal to the alveolar crest in the molar area of the right mandible. Man R2 is the buccolingual width of bone at the alveolar crest in the molar area of the right mandible. Man R3 is the buccolingual width of the bone midway between the alveolar crest and superior cortex of the IAN in the molar area of the right mandible. Man R4 is the width of bone buccal to the IAN in the right mandibular molar area. Man R5 is the width of bone lingual to the IAN in the right mandibular molar area. C. The measurements are made at the right maxillary molar site. D. The measurements are made at the right mandibular molar site. E. reconstructed panoramic image of the cadaver head with the reference lines shows the site of the right mandibular molar measurements.</title></caption><graphic xlink:href="isd-46-93-g001"></graphic></fig><fig id="F2" orientation="portrait" position="float"><label>Fig. 2</label><caption><title>Bland-Altman plot comparing measurement variability between both observers.</title></caption><graphic xlink:href="isd-46-93-g002"></graphic></fig><table-wrap id="T1" orientation="portrait" position="float"><label>Table 1</label><caption><title>Descriptive statistics of inter examiner measurement errors among the different imaging protocols</title></caption><graphic xlink:href="isd-46-93-i001"></graphic><table-wrap-foot><fn><p>Protocol 1: iCAT, FOV 13×16 cm, voxel size 0.3 mm, protocol 2: iCAT, FOV 13×16 cm, voxel size 0.2 mm, protocol 3: Planmeca Promax 3D, FOV 5×8 cm, 0.16 mm, Max: maxilla, Man: mandible, R: right, L: left, MN: mean, MD: median, SD: standard deviation</p></fn></table-wrap-foot></table-wrap><table-wrap id="T2" orientation="portrait" position="float"><label>Table 2</label><caption><title>Accuracy of the measurements of the three imaging protocols compared to the physical measurements</title></caption><graphic xlink:href="isd-46-93-i002"></graphic></table-wrap></floats-group></pmc><affiliations><list><country><li>États-Unis</li></country><region><li>Massachusetts</li></region></list><tree><country name="États-Unis"><region name="Massachusetts"><name sortKey="Ganguly, Rumpa" sort="Ganguly, Rumpa" uniqKey="Ganguly R" first="Rumpa" last="Ganguly">Rumpa Ganguly</name></region><name sortKey="Pagni, Sarah" sort="Pagni, Sarah" uniqKey="Pagni S" first="Sarah" last="Pagni">Sarah Pagni</name><name sortKey="Ramesh, Aruna" sort="Ramesh, Aruna" uniqKey="Ramesh A" first="Aruna" last="Ramesh">Aruna Ramesh</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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