Enhancements to commissioning techniques and quality assurance of brachytherapy treatment planning systems that use model-based dose calculation algorithms

Medical Physics
M J RivardFiras Mourtada

Abstract

The current standard for brachytherapy dose calculations is based on the AAPM TG-43 formalism. Simplifications used in the TG-43 formalism have been challenged by many publications over the past decade. With the continuous increase in computing power, approaches based on fundamental physics processes or physics models such as the linear-Boltzmann transport equation are now applicable in a clinical setting. Thus, model-based dose calculation algorithms (MBDCAs) have been introduced to address TG-43 limitations for brachytherapy. The MBDCA approach results in a paradigm shift, which will require a concerted effort to integrate them properly into the radiation therapy community. MBDCA will improve treatment planning relative to the implementation of the traditional TG-43 formalism by accounting for individualized, patient-specific radiation scatter conditions, and the radiological effect of material heterogeneities differing from water. A snapshot of the current status of MBDCA and AAPM Task Group reports related to the subject of QA recommendations for brachytherapy treatment planning is presented. Some simplified Monte Carlo simulation results are also presented to delineate the effects MBDCA are called to account for and facili...Continue Reading

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Citations

Mar 3, 2011·Medical Physics·Mark J RivardRavinder Nath
Dec 18, 2013·Australasian Physical & Engineering Sciences in Medicine·Claire DempseyAnnette Haworth
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Nov 16, 2019·Australasian Physical & Engineering Sciences in Medicine·Alannah KejdaAnatoly Rosenfeld
Apr 27, 2021·Brachytherapy·Francisco BerumenLuc Beaulieu

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