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Dosimetric verification of complex radiotherapy with a 3D optically based dosimetry system: Dose painting and target tracking
| Content Provider | Scilit |
|---|---|
| Author | Skyt, Peter S. Petersen, Jørgen B. B. Yates, Esben S. Poulsen, Per Rugaard Ravkilde, Thomas L. Balling, Peter Muren, Ludvig P. |
| Copyright Year | 2013 |
| Description | Journal: Acta Oncologica Background. The increasing complexity of radiotherapy (RT) has motivated research into three-dimensional (3D) dosimetry. In this study we investigate the use of 3D dosimetry with polymerizing gels and optical computed tomography (optical CT) as a verification tool for complex RT: dose painting and target tracking. Materials and Methods. For the dose painting studies, two dosimeters were irradiated with a seven-field intensity modulated radiotherapy (IMRT) plan with and without dose prescription based on a hypoxia image dataset of a head and neck patient. In the tracking experiments, two dosimeters were irradiated with a volumetric modulated arc therapy (VMAT) plan with and without clinically measured prostate motion and a third with both motion and target tracking. To assess the performance, 3D gamma analyses were performed between measured and calculated stationary dose distributions. Results. Gamma pass-rates of 95.3% and 97.3% were achieved for the standard and dose-painted IMRT plans. Gamma pass-rates of 91.4% and 54.4% were obtained for the stationary and moving dosimeter, respectively, while tracking increased the pass-rate for the moving dosimeter to 90.4%. Conclusions. This study has shown that the 3D dosimetry system can reproduce and thus verify complex dose distributions, also when influenced by motion. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.3109/0284186X.2013.813965?needAccess=true |
| Ending Page | 1450 |
| Page Count | 6 |
| Starting Page | 1445 |
| ISSN | 0284186X |
| e-ISSN | 1651226X |
| DOI | 10.3109/0284186x.2013.813965 |
| Journal | Acta Oncologica |
| Issue Number | 7 |
| Volume Number | 52 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2013-08-19 |
| Access Restriction | Open |
| Subject Keyword | Journal: Acta Oncologica Radiology, Nuclear Medicine and Imaging Target Tracking Dose Painting Dosimetry System Painting and Target |
| Content Type | Text |
| Subject | Radiology, Nuclear Medicine and Imaging Hematology Oncology |
