Effective dose estimates for cone beam computed tomography in interventional radiology

2013 ◽  
Vol 23 (11) ◽  
pp. 3197-3204 ◽  
Author(s):  
Y. M. Kwok ◽  
F. G. Irani ◽  
K. H. Tay ◽  
C. C. Yang ◽  
C. G. Padre ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Interventional Radiology ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Cone Beam

scholarly journals Digital orthodontic radiographic set versus cone-beam computed tomography: an evaluation of the effective dose

2016 ◽  
Vol 21 (4) ◽  
pp. 66-72 ◽  
Author(s):  
Lillian Atsumi Simabuguro Chinem ◽  
Beatriz de Souza Vilella ◽  
Cláudia Lúcia de Pinho Maurício ◽  
Lucia Viviana Canevaro ◽  
Luiz Fernando Deluiz ◽  
...  
Keyword(s):  
Computed Tomography ◽  
New York ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Radiological Protection ◽  
Anthropomorphic Phantom ◽  
Thermoluminescent Dosimeters ◽  
Optimization Principle ◽  
Effective Doses

ABSTRACT Objective: The aim of this study was to compare the equivalent and effective doses of different digital radiographic methods (panoramic, lateral cephalometric and periapical) with cone-beam computed tomography (CBCT). Methods: Precalibrated thermoluminescent dosimeters were placed at 24 locations in an anthropomorphic phantom (Alderson Rando Phantom, Alderson Research Laboratories, New York, NY, USA), representing a medium sized adult. The following devices were tested: Heliodent Plus (Sirona Dental Systems, Bernsheim, Germany), Orthophos XG 5 (Sirona Dental Systems, Bernsheim, Germany) and i-CAT (Imaging Sciences International, Hatfield, PA, USA). The equivalent doses and effective doses were calculated considering the recommendations of the International Commission of Radiological Protection (ICRP) issued in 1990 and 2007. Results: Although the effective dose of the radiographic set corresponded to 17.5% (ICRP 1990) and 47.2% (ICRP 2007) of the CBCT dose, the equivalent doses of skin, bone surface and muscle obtained by the radiographic set were higher when compared to CBCT. However, in some areas, the radiation produced by the orthodontic set was higher due to the complete periapical examination. Conclusion: Considering the optimization principle of radiation protection, i-CAT tomography should be used only in specific and justified circumstances. Additionally, following the ALARA principle, single periapical radiographies covering restricted areas are more suitable than the complete periapical examination.

Calculating effective dose on a cone beam computed tomography device: 3D Accuitomo and 3D Accuitomo FPD

2008 ◽  
Vol 37 (2) ◽  
pp. 72-79 ◽  
Author(s):  
S Lofthag-Hansen ◽  
A Thilander-Klang ◽  
A Ekestubbe ◽  
E Helmrot ◽  
K Gröndahl
Keyword(s):  
Computed Tomography ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Cone Beam

scholarly journals Comparison of Absorbed and Effective Dose from Two Dental Cone Beam Computed Tomography Scanners

2012 ◽  
Vol 68 (3) ◽  
pp. 216-225 ◽  
Author(s):  
Tsuneichi Okano ◽  
Ayae Matsuo ◽  
Kenichi Gotoh ◽  
Midori Yokoi ◽  
Akiko Hirukawa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Tomography Scanners

scholarly journals Can modifying shielding, field of view, and exposure settings make the effective dose of a cone-beam computed tomography comparable to traditional radiographs used for orthodontic diagnosis?

2020 ◽  
Vol 90 (5) ◽  
pp. 655-664
Author(s):  
Stephanie Ting ◽  
Diana Attaia ◽  
K. Brandon Johnson ◽  
Samer Shoukry Kossa ◽  
Bernard Friedland ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Low Dose ◽  
Radiation Shielding ◽  
Field Of View ◽  
Quality Analysis ◽  
Cone Beam ◽  
Radiological Protection ◽  
Cephalometric Radiograph

ABSTRACT Objectives To analyze the effect of changes in exposure settings, field of view (FOV), and shielding on radiation to an adult and child phantom from cone-beam computed tomography (CBCT) imaging compared to panoramic and lateral cephalometric radiographs. Materials and Methods The effective dose to an adult and child anthropomorphic phantom by the CS 9300 using various scan protocols was recorded. Absorbed radiation was measured with optically stimulated luminescence dosimeters and effective dose calculated using 2007 International Commission on Radiological Protection tissue weighting factors. Scan protocols included different FOVs, voxel sizes, and standard versus low-dose protocols. Radiation shielding was used when it did not interfere with FOV. Panoramic and lateral cephalometric radiographs were taken with the Orthophos SL. Results Even with shielding, smaller FOVs, and increased voxel sizes, the effective dose of standard CBCT scans was higher than panoramic and lateral cephalometric radiographs. A shielded limited FOV standard scan combined with a lateral cephalometric radiograph resulted in a lower dose (P < .001) than a full FOV standard scan. Low-dose shielded scans resulted in significant dose reductions to the adult (P < .05) and child (P < .001) phantoms compared to the respective panoramic and lateral cephalometric radiographs combined. Image quality analysis was not possible with radiation equivalent phantoms. Conclusions Unlike standard CBCTs, shielded low-dose CBCT protocols in the CS 9300 have lower effective doses than conventional radiographs for adult and child phantoms. If high resolution and cranial base visualization are necessary, combining a shielded LFOV standard exposure with a cephalometric radiograph is recommended.

Dose area product in estimation of effective dose of the patients undergoing dental cone beam computed tomography examinations

2018 ◽  
Vol 38 (4) ◽  
pp. 1412-1427 ◽  
Author(s):  
Ivana Kralik ◽  
Dario Faj ◽  
Tomislav Lauc ◽  
Matko Škarica ◽  
Jelena Popić ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Effective Dose ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Dose Area Product ◽  
Area Product
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