ITEM METADATA RECORD
Title: CUSTOMISATION OF A MONTE CARLO DOSIMETRY TOOL FOR DENTAL CONE-BEAM CT SYSTEMS
Authors: Stratis, Andreas ×
Gufei Zhang, Gufei
Lopez Rendon, Xochitl
Jacobs, Reinhilde
Bogaerts, Ria
Bosmans, Hilde #
Issue Date: Jun-2016
Publisher: Nuclear Technology Pub.
Series Title: Radiation Protection Dosimetry vol:169 issue:1-4
Article number: ncw024
Abstract: A versatile EGSnrc Monte Carlo (MC) framework, initially designed to explicitly simulate X-ray tubes and record the output data into phase space data files, was modified towards dental cone-beam computed tomography (CBCT) dosimetric applications by introducing equivalent sources. Half value layer (HVL) measurements were conducted to specify protocol-specific energy spectra. Air kerma measurements were carried out with an ionisation chamber positioned against the X-ray tube to obtain the total filtration attenuation characteristics. The framework is applicable to bowtie and non-bowtie inherent filtrations, and it accounts for the anode heel effect and the total filtration of the tube housing. The code was adjusted to the Promax 3D Max (Planmeca, Helsinki, Finland) dental CBCT scanner. For each clinical protocol, calibration factors were produced to allow absolute MC dose calculations. The framework was validated by comparing MC calculated doses and measured doses in a cylindrical water phantom. Validation results demonstrate the reliability of the framework for dental CBCT dosimetry purposes.
URI: 
ISSN: 0144-8420
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Oral and Maxillo-facial Surgery - Imaging & Pathology (OMFS-IMPATH)
Medical Physics & Quality Assessment (+)
Solid State Physics and Magnetism Section
Laboratory of Experimental Radiotherapy
× corresponding author
# (joint) last author

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