Impact of beam configuration on VMAT plan quality for Pinnacle\(^3\)Auto-Planning for head and neck cases
Please always quote using this URN: urn:nbn:de:bvb:20-opus-200301
- Background The purpose of this study was to compare automatically generated VMAT plans to find the superior beam configurations for Pinnacle3 Auto-Planning and share “best practices”. Methods VMAT plans for 20 patients with head and neck cancer were generated using Pinnacle3 Auto-Planning Module (Pinnacle3 Version 9.10) with different beam setup parameters. VMAT plans for single (V1) or double arc (V2) and partial or full gantry rotation were optimized. Beam configurations with different collimator positions were defined. Target coverageBackground The purpose of this study was to compare automatically generated VMAT plans to find the superior beam configurations for Pinnacle3 Auto-Planning and share “best practices”. Methods VMAT plans for 20 patients with head and neck cancer were generated using Pinnacle3 Auto-Planning Module (Pinnacle3 Version 9.10) with different beam setup parameters. VMAT plans for single (V1) or double arc (V2) and partial or full gantry rotation were optimized. Beam configurations with different collimator positions were defined. Target coverage and sparing of organs at risk were evaluated based on scoring of an evaluation parameter set. Furthermore, dosimetric evaluation was performed based on the composite objective value (COV) and a new cross comparison method was applied using the COVs. Results The evaluation showed a superior plan quality for double arcs compared to one single arc or two single arcs for all cases. Plan quality was superior if a full gantry rotation was allowed during optimization for unilateral target volumes. A double arc technique with collimator setting of 15° was superior to a double arc with collimator 60° and a two single arcs with collimator setting of 15° and 345°. Conclusion The evaluation showed that double and full arcs are superior to single and partial arcs in terms of organs at risk sparing even for unilateral target volumes. The collimator position was found as an additional setup parameter, which can further improve the target coverage and sparing of organs at risk.…
Author: | Anne Richter, Florian Exner, Klaus Bratengeier, Bülent Polat, Michael Flentje, Stefan Weick |
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URN: | urn:nbn:de:bvb:20-opus-200301 |
Document Type: | Journal article |
Faculties: | Medizinische Fakultät / Klinik und Poliklinik für Strahlentherapie |
Language: | English |
Parent Title (English): | Radiation Oncology |
Year of Completion: | 2019 |
Volume: | 14 |
Pagenumber: | 12 |
Source: | Radiation Oncology (2019) 14:12 https://doi.org/10.1186/s13014-019-1211-6 |
DOI: | https://doi.org/10.1186/s13014-019-1211-6 |
Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
Tag: | VMAT; auto-planning; double arc; full arc; partial arc; plan comparison; single arc |
Release Date: | 2020/03/11 |
Collections: | Open-Access-Publikationsfonds / Förderzeitraum 2019 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |