Title: Comparison between effective radiation dose of CBCT and MSCT scanners for dentomaxillofacial applications
Authors: Loubele, Miet ×
Bogaerts, Ria
Van Dijck, Evelien
Pauwels, Ruben
Vanheusden, Sofie
Suetens, Paul
Marchal, Guy
Sanderink, Gerard
Jacobs, Reinhilde #
Issue Date: Sep-2009
Publisher: G. Thieme
Series Title: European Journal of Radiology vol:71 issue:3 pages:461-468
Abstract: OBJECTIVES: To compare the effective dose levels of cone beam computed tomography (CBCT) for maxillofacial applications with those of multi-slice computed tomography (MSCT). STUDY DESIGN: The effective doses of 3 CBCT scanners were estimated (Accuitomo 3D((R)), i-CAT((R)), and NewTom 3G((R))) and compared to the dose levels for corresponding image acquisition protocols for 3 MSCT scanners (Somatom VolumeZoom 4((R)), Somatom Sensation 16((R)) and Mx8000 IDT((R))). The effective dose was calculated using thermoluminescent dosimeters (TLDs), placed in a Rando((R)) Alderson phantom, and expressed according to the ICRP 103 (2007) guidelines (including a separate tissue weighting factor for the salivary glands, as opposed to former ICRP guidelines). RESULTS: Effective dose values ranged from 13 to 82muSv for CBCT and from 474 to 1160muSv for MSCT. CBCT dose levels were the lowest for the Accuitomo 3D((R)), and highest for the i-CAT((R)). CONCLUSIONS: Dose levels for CBCT imaging remained far below those of clinical MSCT protocols, even when a mandibular protocol was applied for the latter, resulting in a smaller field of view compared to various CBCT protocols. Considering this wide dose span, it is of outmost importance to justify the selection of each of the aforementioned techniques, and to optimise the radiation dose while achieving a sufficient image quality. When comparing these results to previous dosimetric studies, a conversion needs to be made using the latest ICRP recommendations.
Description: Loubele M., Bogaerts R., Van Dijck E., Pauwels R., Vanheusden S., Suetens P., Marchal G., Sanderink G., Jacobs R., ''Comparison between effective radiation dose of CBCT and MSCT scanners for dentomaxillofacial applications'', European journal of radiology, vol. 71, pp. 461-468, 2009.
ISSN: 0720-048X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Radiology
Department of Oral Health Sciences - miscellaneous
Oral Imaging
ESAT - PSI, Processing Speech and Images
Laboratory of Experimental Radiotherapy
× corresponding author
# (joint) last author

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