@Article{Siebert2013,
journal="Journal of Contemporary Brachytherapy",
issn="1689-832X",
volume="5",
number="4",
year="2013",
title="Original paperHead and neck 192Ir HDR-brachytherapy dosimetry using a grid-based Boltzmann solver",
abstract=" Purpose:  To compare dosimetry for head and neck cancer patients, calculated with TG-43 formalism and a commercially available grid-based Boltzmann solver.    Material and methods:  This study included 3D-dosimetry of 49 consecutive brachytherapy head and neck cancer patients, computed by a grid-based Boltzmann solver that takes into account tissue inhomogeneities as well as TG-43 formalism. 3D-treatment planning was carried out by using computed tomography.    Results:  Dosimetric indices D 90  and V 100  for target volume were about 3% lower (median value) for the grid-based Boltzmann solver relative to TG-43-based computation (p < 0.01). The V150 dose parameter showed 1.6% increase from grid-based Boltzmann solver to TG-43 (p < 0.01).    Conclusions : Dose differences between results of a grid-based Boltzmann solver and TG-43 formalism for high-dose-rate head and neck brachytherapy patients to the target volume were found. Distinctions in D 90  of CTV were low (2.63 Gy for grid-based Boltzmann solver vs. 2.71 Gy TG-43 in mean). In our clinical practice, prescription doses remain unchanged for high-dose-rate head and neck brachytherapy for the time being.",
author="Siebert, Frank-André
and Wolf, Sabine
and Kóvacs, George",
pages="232--235",
doi="10.5114/jcb.2013.39444",
url="http://dx.doi.org/10.5114/jcb.2013.39444"
}