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Comparison of manual and dose reduction modes of a MORITA R100 CBCT
Umeå University, Faculty of Medicine, Department of Odontology. Digital Diagnostic Center, Freiburg im Breisgau, Germany.
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2019 (English)In: Dento-Maxillo-Facial Radiology, ISSN 0250-832X, E-ISSN 1476-542X, Vol. 48, no 2, article id 20180009Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE:: To compare effective dose differences when acquiring (1) dose reduction mode and (2) manual mode in a MORITA R100 CBCT.

METHODS:: 24 exposure protocols with different technique factors were performed in both the dose reduction mode and the manual mode in a Veraviewepocs 3D R100 cone beam CT device. 48 TLD were placed in a RANDO head phantom at 24 different sites. Effective doses were calculated according to the formalism published in the 103rd ICRP report.

RESULTS:: Effective doses for the dose reduction mode protocols ranged from 14 to 156 µSv [mean = 57 µSv, standard deviation (SD) = 37 µSv], whereas effective doses for the manual mode protocols ranged from 22 to 267 µSv (mean = 94 µSv, SD = 65 µSv). Thus, across all protocols, the dose reduction mode leads to a drop of the effective dose by 38 % (SD = 6 %).

CONCLUSIONS:: The estimated effective doses are significantly lower if dose reduction protocols are acquired.

Place, publisher, year, edition, pages
London: British Institute of Radiology , 2019. Vol. 48, no 2, article id 20180009
Keywords [en]
cone-beam computed tomography; radiation dosage; thermoluminescent dosimetry
National Category
Radiology, Nuclear Medicine and Medical Imaging Dentistry
Identifiers
URN: urn:nbn:se:umu:diva-154619DOI: 10.1259/dmfr.20180009ISI: 000456726500004PubMedID: 30182744OAI: oai:DiVA.org:umu-154619DiVA, id: diva2:1273097
Available from: 2018-12-20 Created: 2018-12-20 Last updated: 2019-02-27Bibliographically approved

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Rottke, Dennis

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CiteExportLink to record
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