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Experimental evaluation of MCDTK, the Monte Carlo DICOM Tool-Kit

Crowe, Scott, Kairn, Tanya, Trapp, Jamie, & Fielding, Andrew L. (2012) Experimental evaluation of MCDTK, the Monte Carlo DICOM Tool-Kit. In Mian, Long (Ed.) World Congress on Medical Physics and Biomedical Engineering 2012. Springer, Beijing, China, pp. 1807-1810.

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    Abstract

    The Monte Carlo DICOM Tool-Kit (MCDTK) is a software suite designed for treatment plan dose verification, using the BEAMnrc and DOSXYZnrc Monte Carlo codes. MCDTK converts DICOM-format treatment plan information into Monte Carlo input files and compares the results of Monte Carlo treatment simulations with conventional treatment planning dose calculations. In this study, a treatment is planned using a commercial treatment planning system, delivered to a pelvis phantom containing ten thermoluminescent dosimeters and simulated using BEAMnrc and DOSXYZnrc using inputs derived from MCDTK. The dosimetric accuracy of the Monte Carlo data is then evaluated via comparisons with the dose distribution obtained from the treatment planning system as well as the in-phantom point dose measurements. The simulated beam arrangement produced by MCDTK is found to be in geometric agreement with the planned treatment. An isodose display generated from the Monte Carlo data by MCDTK shows general agreement with the isodose display obtained from the treatment planning system, except for small regions around density heterogeneities in the phantom, where the pencil-beam dose calculation performed by the treatment planning systemis likely to be less accurate. All point dose measurements agree with the Monte Carlo data obtained using MCDTK, within confidence limits, and all except one of these point dose measurements show closer agreement with theMonte Carlo data than with the doses calculated by the treatment planning system. This study provides a simple demonstration of the geometric and dosimetric accuracy ofMonte Carlo simulations based on information from MCDTK.

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    ID Code: 52703
    Item Type: Book Chapter
    Keywords: Monte Carlo, Dicom, radiotherapy, MCTDK
    ISBN: 9783642293047
    Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Medical Physics (029903)
    Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
    Current > QUT Faculties and Divisions > Science & Engineering Faculty
    Funding:
    Copyright Owner: Copyright 2012 Springer
    Copyright Statement: This is the author-version of the work. Conference proceedings published, by Springer Verlag, will be available via SpringerLink. http://www.springerlink.com
    Deposited On: 25 Jul 2012 10:07
    Last Modified: 09 Apr 2014 22:19

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