Comparison of Manual and Dose Reduction Modes of a MORITA R100 CBCT

Overview

Journal Dentomaxillofac Radiol

Publisher Oxford University Press

Date 2018 Sep 6

PMID 30182744

Citations 3

Authors

Dennis Rottke

Julia Dreger

Kunihiko Sawada

Kazuya Honda

Dirk Schulze

Affiliations

Soon will be listed here.

Abstract

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.

Citing Articles

Gray values and noise behavior of cone-beam computed tomography machines-an in vitro study.

Oliveira-Santos N, Gaeta-Araujo H, Spin-Neto R, Dagassan-Berndt D, Bornstein M, Oliveira M Dentomaxillofac Radiol. 2024; 54(2):140-148.

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Does the shape of the field-of-view influence the magnitude of artefacts from high-density materials in cone-beam computed tomography?.

Cascante-Sequeira D, Fontenele R, Martins L, Brasil D, Oliveira M, Freitas D Dentomaxillofac Radiol. 2023; 52(7):20230147.

PMID: 37493606 PMC: 10552126. DOI: 10.1259/dmfr.20230147.

Does cone-beam CT convex triangular field of view influence the image shape distortion of high-density materials?.

Cascante-Sequeira D, Coelho-Silva F, Rosado L, Lucca L, Freitas D, de-Azevedo-Vaz S Dentomaxillofac Radiol. 2023; 52(8):20230029.

PMID: 37427699 PMC: 10968767. DOI: 10.1259/dmfr.20230029.

Comparison of the expression of the volumetric alteration artifact in cylindrical and triangular fields of view in two cone-beam computed tomography devices.

Cascante-Sequeira D, Coelho-Silva F, Rosado L, Freitas D, de-Azevedo-Vaz S, Haiter-Neto F Clin Oral Investig. 2021; 26(1):1025-1033.

PMID: 34324084 DOI: 10.1007/s00784-021-04086-1.

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