Dose-volume histogram quality assurance for linac-based treatment planning systems
| Autor: | Michael S Gossman, Morris I Bank |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
medicine.medical_specialty
Dose-volume histogram Volume business.industry dose–volume medicine.medical_treatment Biophysics quality assurance Linear particle accelerator Radiation therapy Dose Histogram medicine Original Article Radiology Nuclear Medicine and imaging Medical physics Patient treatment treatment planning system dose–volume histogram histogram business Radiation treatment planning Quality assurance Volume (compression) |
| Zdroj: | Journal of Medical Physics / Association of Medical Physicists of India |
| ISSN: | 0971-6203 |
| DOI: | 10.4103/0971-6203.71759 |
| Popis: | Dose-volume histograms provide key information to radiation oncologists when they assess the adequacy of a patient treatment plan in radiation therapy. It is important therefore that all clinically relevant data be accurate. In this article we present the first quality assurance routine involving a direct comparison of planning system results with the results obtained from independent hand calculations. Given a known three-dimensional (3-D) structure such as a parallelepiped, a simple beam arrangement, and known physics beam data, a time-efficient and reproducible method for verifying the accuracy of volumetric statistics (DVH) from a radiation therapy treatment planning system (TPS) can be employed rapidly, satisfying the QA requirements for (TPS) commissioning, upgrades, and annual checks. Using this method, the maximum disagreement was only 1.7% for 6 MV and 1.3% for 18 MV photon energies. The average accuracy was within 0.6% for 6 MV and 0.4% for 18 MV for all depth-dose results. A 2% disagreement was observed with the treatment planning system DVH from defined volume comparison to the known structure dimensions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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