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dc.contributor.authorCederhag, Josefine
dc.contributor.authorKadesjö, Nils
dc.contributor.authorNilsson, Mats
dc.contributor.authorAlstergren, Per
dc.contributor.authorShi, Xie-Qi
dc.contributor.authorHellén-Halme, Kristina
dc.date.accessioned2024-09-09T11:03:47Z
dc.date.available2024-09-09T11:03:47Z
dc.date.created2023-10-12T13:47:16Z
dc.date.issued2023
dc.identifier.issn2212-4403
dc.identifier.urihttps://hdl.handle.net/11250/3150943
dc.description.abstractObjectives We aimed to map the correlation between thermoluminescent dosimeters (TLDs) and Gafchromic film for measuring absorbed doses and to compare minimum, maximum, and mean absorbed doses over larger regions of interest and at various craniofacial organs and tissues during cone beam computed tomography (CBCT) exposure of the mandibular third molar region. Study Design We positioned TLDs at 75 measurement points in a head phantom. Gafchromic film was cut to the same shape as the 5 levels of the phantom and was placed on top of the TLDs. Both dosimetry methods thus included the surface of each level simultaneously. CBCT scans were made using a 5 × 5 cm field of view and a rotation angle of 200°. Measurements included absorbed dose distributions, doses at all 75 points, and minimum, maximum, and mean doses within organs and tissues. Results The correlation of point-dose measurements at all TLD sites with doses measured on film was strong (R2 = 0.9687), with greatest correlation at lower doses (<2 mGy). Large deviations between TLD and film measurements of minimum and maximum doses and absorbed doses to the organs occurred at all 5 levels. TLD positioning failed to cover several organ sites; for these, only absorbed dose measurements from the film were available. Conclusions TLDs were unable to sample dose distributions and gradients accurately. The characteristics of Gafchromic LD-V1 film make it a favorable alternative in dental CBCT dosimetry.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleComparison of absorbed doses and organ doses measured with thermoluminescent dosimeters and Gafchromic film for cone beam computed tomography examination of the posterior mandibular region in a head phantomen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.doi10.1016/j.oooo.2023.07.006
dc.identifier.cristin2184146
dc.source.journalOral surgery, oral medicine, oral pathology and oral radiologyen_US
dc.source.pagenumber769-776en_US
dc.identifier.citationOral surgery, oral medicine, oral pathology and oral radiology. 2023, 136 (6), 769-776.en_US
dc.source.volume136en_US
dc.source.issue6en_US


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal