Effect of electric potential and current on mandibular linear measurements in cone beam CT
Identifieur interne : 003328 ( Main/Exploration ); précédent : 003327; suivant : 003329Effect of electric potential and current on mandibular linear measurements in cone beam CT
Auteurs : S. Panmekiate [Thaïlande] ; W. Apinhasmit [Thaïlande] ; A. Petersson [Suède]Source :
- Dentomaxillofacial Radiology [ 0250-832X ] ; 2012.
Descripteurs français
- KwdFr :
- Adulte d'âge moyen, Alimentations électriques (), Anatomie en coupes transversales, Biais de l'observateur, Cadavre, Conductivité électrique, Céphalométrie (), Femelle, Humains, Mandibule (imagerie diagnostique), Mâchoire édentée (imagerie diagnostique), Mâle, Sujet âgé, Sujet âgé de 80 ans ou plus, Tomodensitométrie à faisceau conique (), Électricité.
- MESH :
- imagerie diagnostique : Mandibule, Mâchoire édentée.
- Adulte d'âge moyen, Alimentations électriques, Anatomie en coupes transversales, Biais de l'observateur, Cadavre, Conductivité électrique, Céphalométrie, Femelle, Humains, Mâle, Sujet âgé, Sujet âgé de 80 ans ou plus, Tomodensitométrie à faisceau conique, Électricité.
English descriptors
- KwdEn :
- Aged, Aged, 80 and over, Anatomy, Cross-Sectional, Cadaver, Cephalometry (methods), Cephalometry (statistics & numerical data), Cone-Beam Computed Tomography (methods), Cone-Beam Computed Tomography (statistics & numerical data), Electric Conductivity, Electric Power Supplies (statistics & numerical data), Electricity, Female, Humans, Jaw, Edentulous (diagnostic imaging), Male, Mandible (diagnostic imaging), Middle Aged, Observer Variation.
- MESH :
- diagnostic imaging : Jaw, Edentulous, Mandible.
- methods : Cephalometry, Cone-Beam Computed Tomography.
- statistics & numerical data : Cephalometry, Cone-Beam Computed Tomography, Electric Power Supplies.
- Aged, Aged, 80 and over, Anatomy, Cross-Sectional, Cadaver, Electric Conductivity, Electricity, Female, Humans, Male, Middle Aged, Observer Variation.
Abstract
The purpose of this study was to compare mandibular linear distances measured from cone beam CT (CBCT) images produced by different radiographic parameter settings (peak kilovoltage and milliampere value).
20 cadaver hemimandibles with edentulous ridges posterior to the mental foramen were embedded in clear resin blocks and scanned by a CBCT machine (CB MercuRayTM; Hitachi Medico Technology Corp., Chiba-ken, Japan). The radiographic parameters comprised four peak kilovoltage settings (60 kVp, 80 kVp, 100 kVp and 120 kVp) and two milliampere settings (10 mA and 15 mA). A 102.4 mm field of view was chosen. Each hemimandible was scanned 8 times with 8 different parameter combinations resulting in 160 CBCT data sets. On the cross-sectional images, six linear distances were measured. To assess the intraobserver variation, the 160 data sets were remeasured after 2 weeks. The measurement precision was calculated using Dahlberg's formula. With the same peak kilovoltage, the measurements yielded by different milliampere values were compared using the paired
Measurement precision varied from 0.03 mm to 0.28 mm. No significant differences in the distances were found among the different radiographic parameter combinations.
Based upon the specific machine in the present study, low peak kilovoltage and milliampere value might be used for linear measurements in the posterior mandible.
Url:
DOI: 10.1259/dmfr/51664704
PubMed: 22499132
PubMed Central: 3608379
Affiliations:
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Le document en format XML
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Apinhasmit</name><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand</addr-line></nlm:aff><country xml:lang="fr">Thaïlande</country><wicri:regionArea>Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok</wicri:regionArea><wicri:noRegion>Bangkok</wicri:noRegion></affiliation></author><author><name sortKey="Petersson, A" sort="Petersson, A" uniqKey="Petersson A" first="A" last="Petersson">A. 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Panmekiate</name><affiliation wicri:level="1"><nlm:aff id="aff1"><addr-line>Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand</addr-line></nlm:aff><country xml:lang="fr">Thaïlande</country><wicri:regionArea>Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok</wicri:regionArea><wicri:noRegion>Bangkok</wicri:noRegion></affiliation></author><author><name sortKey="Apinhasmit, W" sort="Apinhasmit, W" uniqKey="Apinhasmit W" first="W" last="Apinhasmit">W. Apinhasmit</name><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand</addr-line></nlm:aff><country xml:lang="fr">Thaïlande</country><wicri:regionArea>Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok</wicri:regionArea><wicri:noRegion>Bangkok</wicri:noRegion></affiliation></author><author><name sortKey="Petersson, A" sort="Petersson, A" uniqKey="Petersson A" first="A" last="Petersson">A. Petersson</name><affiliation wicri:level="1"><nlm:aff id="aff3"><addr-line>Department of Oral Radiology, Faculty of Odontology, Malmö University, Malmö, Sweden</addr-line></nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Oral Radiology, Faculty of Odontology, Malmö University, Malmö</wicri:regionArea><wicri:noRegion>Malmö</wicri:noRegion></affiliation></author></analytic><series><title level="j">Dentomaxillofacial Radiology</title><idno type="ISSN">0250-832X</idno><idno type="eISSN">1476-542X</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Anatomy, Cross-Sectional</term><term>Cadaver</term><term>Cephalometry (methods)</term><term>Cephalometry (statistics & numerical data)</term><term>Cone-Beam Computed Tomography (methods)</term><term>Cone-Beam Computed Tomography (statistics & numerical data)</term><term>Electric Conductivity</term><term>Electric Power Supplies (statistics & numerical data)</term><term>Electricity</term><term>Female</term><term>Humans</term><term>Jaw, Edentulous (diagnostic imaging)</term><term>Male</term><term>Mandible (diagnostic imaging)</term><term>Middle Aged</term><term>Observer Variation</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Adulte d'âge moyen</term><term>Alimentations électriques ()</term><term>Anatomie en coupes transversales</term><term>Biais de l'observateur</term><term>Cadavre</term><term>Conductivité électrique</term><term>Céphalométrie ()</term><term>Femelle</term><term>Humains</term><term>Mandibule (imagerie diagnostique)</term><term>Mâchoire édentée (imagerie diagnostique)</term><term>Mâle</term><term>Sujet âgé</term><term>Sujet âgé de 80 ans ou plus</term><term>Tomodensitométrie à faisceau conique ()</term><term>Électricité</term></keywords><keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Jaw, Edentulous</term><term>Mandible</term></keywords><keywords scheme="MESH" qualifier="imagerie diagnostique" xml:lang="fr"><term>Mandibule</term><term>Mâchoire édentée</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Cephalometry</term><term>Cone-Beam Computed Tomography</term></keywords><keywords scheme="MESH" qualifier="statistics & numerical data" xml:lang="en"><term>Cephalometry</term><term>Cone-Beam Computed Tomography</term><term>Electric Power Supplies</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Anatomy, Cross-Sectional</term><term>Cadaver</term><term>Electric Conductivity</term><term>Electricity</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Observer Variation</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Adulte d'âge moyen</term><term>Alimentations électriques</term><term>Anatomie en coupes transversales</term><term>Biais de l'observateur</term><term>Cadavre</term><term>Conductivité électrique</term><term>Céphalométrie</term><term>Femelle</term><term>Humains</term><term>Mâle</term><term>Sujet âgé</term><term>Sujet âgé de 80 ans ou plus</term><term>Tomodensitométrie à faisceau conique</term><term>Électricité</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objectives</title><p>The purpose of this study was to compare mandibular linear distances measured from cone beam CT (CBCT) images produced by different radiographic parameter settings (peak kilovoltage and milliampere value).</p></sec><sec><title>Methods</title><p>20 cadaver hemimandibles with edentulous ridges posterior to the mental foramen were embedded in clear resin blocks and scanned by a CBCT machine (CB MercuRay<sup>TM</sup>; Hitachi Medico Technology Corp., Chiba-ken, Japan). The radiographic parameters comprised four peak kilovoltage settings (60 kVp, 80 kVp, 100 kVp and 120 kVp) and two milliampere settings (10 mA and 15 mA). A 102.4 mm field of view was chosen. Each hemimandible was scanned 8 times with 8 different parameter combinations resulting in 160 CBCT data sets. On the cross-sectional images, six linear distances were measured. To assess the intraobserver variation, the 160 data sets were remeasured after 2 weeks. The measurement precision was calculated using Dahlberg's formula. With the same peak kilovoltage, the measurements yielded by different milliampere values were compared using the paired <italic>t</italic>-test. With the same milliampere value, the measurements yielded by different peak kilovoltage were compared using analysis of variance. A significant difference was considered when <italic>p</italic> < 0.05.</p></sec><sec><title>Results</title><p>Measurement precision varied from 0.03 mm to 0.28 mm. No significant differences in the distances were found among the different radiographic parameter combinations.</p></sec><sec><title>Conclusions</title><p>Based upon the specific machine in the present study, low peak kilovoltage and milliampere value might be used for linear measurements in the posterior mandible.</p></sec></div></front></TEI><affiliations><list><country><li>Suède</li><li>Thaïlande</li></country></list><tree><country name="Thaïlande"><noRegion><name sortKey="Panmekiate, S" sort="Panmekiate, S" uniqKey="Panmekiate S" first="S" last="Panmekiate">S. Panmekiate</name></noRegion><name sortKey="Apinhasmit, W" sort="Apinhasmit, W" uniqKey="Apinhasmit W" first="W" last="Apinhasmit">W. Apinhasmit</name></country><country name="Suède"><noRegion><name sortKey="Petersson, A" sort="Petersson, A" uniqKey="Petersson A" first="A" last="Petersson">A. Petersson</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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