Influence of patient position and other inherent factors on image quality in two different cone beam computed tomography (CBCT) devices
Identifieur interne : 000183 ( Pmc/Checkpoint ); précédent : 000182; suivant : 000184Influence of patient position and other inherent factors on image quality in two different cone beam computed tomography (CBCT) devices
Auteurs : Ninita Lindfors [Suède] ; Henrik Lund [Suède] ; Hans Johansson [Suède] ; Annika Ekestubbe [Suède]Source :
- European Journal of Radiology Open [ 2352-0477 ] ; 2017.
Abstract
Patient head position can affect the image quality in CBCT-examinations. CNR values can be used to evaluate image quality. Inherent factors influence effective dose variations between CBCT-devices.
Url:
DOI: 10.1016/j.ejro.2017.10.001
PubMed: 29159206
PubMed Central: 5675893
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Influence of patient position and other inherent factors on image quality in two different cone beam computed tomography (CBCT) devices</title><author><name sortKey="Lindfors, Ninita" sort="Lindfors, Ninita" uniqKey="Lindfors N" first="Ninita" last="Lindfors">Ninita Lindfors</name><affiliation wicri:level="1"><nlm:aff id="aff0005">Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg</wicri:regionArea><wicri:noRegion>Göteborg</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="aff0010">Institute for Postgraduate Dental Education, Jönköping, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Institute for Postgraduate Dental Education, 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Hospital, Jönköping</wicri:regionArea><wicri:noRegion>Jönköping</wicri:noRegion></affiliation></author><author><name sortKey="Ekestubbe, Annika" sort="Ekestubbe, Annika" uniqKey="Ekestubbe A" first="Annika" last="Ekestubbe">Annika Ekestubbe</name><affiliation wicri:level="1"><nlm:aff id="aff0005">Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg</wicri:regionArea><wicri:noRegion>Göteborg</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">29159206</idno><idno type="pmc">5675893</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5675893</idno><idno type="RBID">PMC:5675893</idno><idno type="doi">10.1016/j.ejro.2017.10.001</idno><date when="2017">2017</date><idno type="wicri:Area/Pmc/Corpus">002C46</idno><idno 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University of Gothenburg, Göteborg</wicri:regionArea><wicri:noRegion>Göteborg</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="aff0010">Institute for Postgraduate Dental Education, Jönköping, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Institute for Postgraduate Dental Education, Jönköping</wicri:regionArea><wicri:noRegion>Jönköping</wicri:noRegion></affiliation></author><author><name sortKey="Lund, Henrik" sort="Lund, Henrik" uniqKey="Lund H" first="Henrik" last="Lund">Henrik Lund</name><affiliation wicri:level="1"><nlm:aff id="aff0005">Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg</wicri:regionArea><wicri:noRegion>Göteborg</wicri:noRegion></affiliation></author><author><name sortKey="Johansson, Hans" sort="Johansson, Hans" uniqKey="Johansson H" first="Hans" last="Johansson">Hans Johansson</name><affiliation wicri:level="1"><nlm:aff id="aff0015">Department of Medical Physics/Department of Oncology, Ryhov County Hospital, Jönköping, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Medical Physics/Department of Oncology, Ryhov County Hospital, Jönköping</wicri:regionArea><wicri:noRegion>Jönköping</wicri:noRegion></affiliation></author><author><name sortKey="Ekestubbe, Annika" sort="Ekestubbe, Annika" uniqKey="Ekestubbe A" first="Annika" last="Ekestubbe">Annika Ekestubbe</name><affiliation wicri:level="1"><nlm:aff id="aff0005">Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden</nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg</wicri:regionArea><wicri:noRegion>Göteborg</wicri:noRegion></affiliation></author></analytic><series><title level="j">European Journal of Radiology Open</title><idno type="eISSN">2352-0477</idno><imprint><date when="2017">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><title>Highlights</title><p><list list-type="simple"><list-item id="lsti0005"><label>•</label><p>Patient head position can affect the image quality in CBCT-examinations.</p></list-item><list-item id="lsti0010"><label>•</label><p>CNR values can be used to evaluate image quality.</p></list-item><list-item id="lsti0015"><label>•</label><p>Inherent factors influence effective dose variations between CBCT-devices.</p></list-item></list></p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Mozzo, P" uniqKey="Mozzo P">P. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Eur J Radiol Open</journal-id><journal-id journal-id-type="iso-abbrev">Eur J Radiol Open</journal-id><journal-title-group><journal-title>European Journal of Radiology Open</journal-title></journal-title-group><issn pub-type="epub">2352-0477</issn><publisher><publisher-name>Elsevier</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">29159206</article-id><article-id pub-id-type="pmc">5675893</article-id><article-id pub-id-type="publisher-id">S2352-0477(17)30034-5</article-id><article-id pub-id-type="doi">10.1016/j.ejro.2017.10.001</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Influence of patient position and other inherent factors on image quality in two different cone beam computed tomography (CBCT) devices</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Lindfors</surname><given-names>Ninita</given-names></name><email>ninita.lindfors@rjl.se</email><xref rid="aff0005" ref-type="aff">a</xref><xref rid="aff0010" ref-type="aff">b</xref><xref rid="cor0005" ref-type="corresp">⁎</xref></contrib><contrib contrib-type="author"><name><surname>Lund</surname><given-names>Henrik</given-names></name><xref rid="aff0005" ref-type="aff">a</xref></contrib><contrib contrib-type="author"><name><surname>Johansson</surname><given-names>Hans</given-names></name><xref rid="aff0015" ref-type="aff">c</xref></contrib><contrib contrib-type="author"><name><surname>Ekestubbe</surname><given-names>Annika</given-names></name><xref rid="aff0005" ref-type="aff">a</xref></contrib></contrib-group><aff id="aff0005"><label>a</label>Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden</aff><aff id="aff0010"><label>b</label>Institute for Postgraduate Dental Education, Jönköping, Sweden</aff><aff id="aff0015"><label>c</label>Department of Medical Physics/Department of Oncology, Ryhov County Hospital, Jönköping, Sweden</aff><author-notes><corresp id="cor0005"><label>⁎</label>Corresponding author at: Department of Dentomaxillofacial Radiology, Institute for Postgraduate Dental Education, P.O. Box 1030, SE-551 11 Jönköping, Sweden.Institute for Postgraduate Dental EducationJönköpingSweden <email>ninita.lindfors@rjl.se</email></corresp></author-notes><pub-date pub-type="pmc-release"><day>01</day><month>11</month><year>2017</year></pub-date><pmc-comment> PMC Release delay is 0 months and 0 days and was based on .</pmc-comment>
<pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>01</day><month>11</month><year>2017</year></pub-date><volume>4</volume><fpage>132</fpage><lpage>137</lpage><history><date date-type="received"><day>10</day><month>7</month><year>2017</year></date><date date-type="accepted"><day>20</day><month>10</month><year>2017</year></date></history><permissions><copyright-statement>© 2017 The Author(s)</copyright-statement><copyright-year>2017</copyright-year><license license-type="CC BY-NC-ND" xlink:href="http://creativecommons.org/licenses/by-nc-nd/4.0/"><license-p>This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).</license-p></license></permissions><abstract abstract-type="author-highlights" id="abs0005"><title>Highlights</title><p><list list-type="simple"><list-item id="lsti0005"><label>•</label><p>Patient head position can affect the image quality in CBCT-examinations.</p></list-item><list-item id="lsti0010"><label>•</label><p>CNR values can be used to evaluate image quality.</p></list-item><list-item id="lsti0015"><label>•</label><p>Inherent factors influence effective dose variations between CBCT-devices.</p></list-item></list></p></abstract><abstract id="abs0010"><sec><title>Objectives</title><p>The aim of this <italic>in vitro</italic> study was to evaluate how a deviation from the horizontal plane, affects the image quality in two different CBCT-devices.</p></sec><sec><title>Methods</title><p>A phantom head SK150 (RANDO, The Phantom Laboratory, Salem, NY, USA) was examined in two CBCT-units: Accuitomo 80 and Veraviewepocs 3D R100 (J. Morita Mfg. Corp. Kyoto, Japan). The phantom head was placed with the hard palate parallel to the horizontal plane and tilted 20 ° backwards. Exposures were performed with different field of views (FOVs), voxel sizes, slice thicknesses and exposure settings. Effective dose was calculated using PCXMC 2.0 (STUK, Helsinki, Finland). Image quality was assessed using contrast-to-noise-ratio (CNR). Region of interest (ROI) was set at three different levels of the mandibular bone and soft tissue, uni- and bilaterally in small and large FOVs, respectively. CNR values were calculated by CT-value and standard deviation for each ROI. Factor analysis was used to analyze the material.</p></sec><sec><title>Results</title><p>Tilting the phantom head backwards rendered significantly higher mean CNR values regardless of FOV. The effective dose was lower in small than in large FOVs and varied to a larger extent between CBCT-devices in large FOVs.</p></sec><sec><title>Conclusions</title><p>Head position can affect the image quality. Tilting the head backward improved image quality in the mandibular region. However, if influenced by other variables <italic>e.g.</italic> motion artifacts in a clinical situation, remains to be further investigated.</p></sec><sec><title>Advances in knowledge</title><p>Image quality assessed using CNR values to investigate the influence of different patient positions and FOVs.</p></sec></abstract><kwd-group id="kwd0005"><title>Keywords</title><kwd>Image quality</kwd><kwd>CBCT</kwd><kwd>Radiation dose</kwd><kwd>Patient position</kwd><kwd>FOV</kwd></kwd-group></article-meta></front></pmc><affiliations><list><country><li>Suède</li></country></list><tree><country name="Suède"><noRegion><name sortKey="Lindfors, Ninita" sort="Lindfors, Ninita" uniqKey="Lindfors N" first="Ninita" last="Lindfors">Ninita Lindfors</name></noRegion><name sortKey="Ekestubbe, Annika" sort="Ekestubbe, Annika" uniqKey="Ekestubbe A" first="Annika" last="Ekestubbe">Annika Ekestubbe</name><name sortKey="Johansson, Hans" sort="Johansson, Hans" uniqKey="Johansson H" first="Hans" last="Johansson">Hans Johansson</name><name sortKey="Lindfors, Ninita" sort="Lindfors, Ninita" uniqKey="Lindfors N" first="Ninita" last="Lindfors">Ninita Lindfors</name><name sortKey="Lund, Henrik" sort="Lund, Henrik" uniqKey="Lund H" first="Henrik" last="Lund">Henrik Lund</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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