On the impact of improved dose calculation accuracy in clinical treatment planning for superficial high-dose-rate brachytherapy of extensive scalp lesions
TG-43-based dose calculations disregard tissue heterogeneities and finite scatter conditions, prompting the introduction of model-based dose calculation algorithms (MBDCAs) to improve accuracy in high-dose-rate (HDR) brachytherapy. This study evaluated the effectiveness of MBDCAs over TG-43 in HDR <sup>192</sup>Ir brachytherapy of extended scalp lesions. Treatment planning dose calculations were compared with Monte Carlo (MC) data. TG-43 exhibited a dose overestimation ranging from 10% to 23% as the distance from the implant increased, while a better agreement from 2% to 6% was observed between the MBDCA and MC, supporting the adoption of MBDCAs for dose calculations in broad scalp lesions.
Authors
- Panagiotis Papagiannis (ORCID: https://orcid.org/0000-0001-6122-9624)
- Vasiliki Peppa (ORCID: https://orcid.org/0000-0002-6742-1278)
- Mark Gainey (ORCID: https://orcid.org/0000-0002-0074-3328)
- Tanja Sprave (ORCID: https://orcid.org/0000-0003-4052-6632)
- Dimos Baltas (ORCID: https://orcid.org/0000-0003-4220-9083)
- M. Kollefrath
- Giulio Rossi
Institutions
- National and Kapodistrian University of Athens (GR)
- University Medical Center Freiburg (DE)
Publication Details
- Journal
- Physics and Imaging in Radiation Oncology
- Published
- 2024-10-01
- DOI
- https://doi.org/10.1016/j.phro.2024.100673
- Citations
- 3
- Primary Topic
- Advanced Radiotherapy Techniques
- Type
- article
- Field-Weighted Citation Impact
- 1.82