Dosimetric effects of a high-density spinal implant

Kairn, T., Crowe, S., Kenny, J., Mitchell, J., Burke, M., Schlect, D., & Trapp, J. (2013) Dosimetric effects of a high-density spinal implant. Journal of Physics: Conference Series, 444(1), 012108.

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Abstract

In this study, a treatment plan for a spinal lesion, with all beams transmitted though a titanium vertebral reconstruction implant, was used to investigate the potential effect of a high-density implant on a three-dimensional dose distribution for a radiotherapy treatment. The BEAMnrc/DOSXYZnrc and MCDTK Monte Carlo codes were used to simulate the treatment using both a simplified, recltilinear model and a detailed model incorporating the full complexity of the patient anatomy and treatment plan. The resulting Monte Carlo dose distributions showed that the commercial treatment planning system failed to accurately predict both the depletion of dose downstream of the implant and the increase in scattered dose adjacent to the implant. Overall, the dosimetric effect of the implant was underestimated by the commercial treatment planning system and overestimated by the simplified Monte Carlo model. The value of performing detailed Monte Carlo calculations, using the full patient and treatment geometry, was demonstrated.

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4 citations in Web of Science®

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ID Code: 61028
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: radiotherapy, implant, spinal, dosimetry
DOI: 10.1088/1742-6596/444/1/012108
ISSN: 1742-6596 (online) 1742-6588 (print)
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 2013 The authors.
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Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.

Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Published under licence by IOP Publishing Ltd

Deposited On: 02 Jul 2013 04:25
Last Modified: 06 Sep 2016 23:43

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