| ZOU Hua wei,JIA Ming xuan,WU Rong.Dosimetric verification of the intensity-modulated radiation therapy[J].Chinese Journal of Radiological Medicine and Protection,2004,24(3):256-258 |
| Dosimetric verification of the intensity-modulated radiation therapy |
| Received:May 14, 2003 |
| DOI： |
| KeyWords:Intensity-modulated radiation therapy Inverse planning Dosimetric verification |
| FundProject:辽宁省自然科学基金资助项目(20022070) |
| Author Name | Affiliation | | ZOU Hua wei | Center of Radiation Oncology, The 2 nd Hospital of China Medical University, Shenyang 110004, China | | JIA Ming xuan | Center of Radiation Oncology, The 2 nd Hospital of China Medical University, Shenyang 110004, China | | WU Rong | Center of Radiation Oncology, The 2 nd Hospital of China Medical University, Shenyang 110004, China | | 肖福大 | Center of Radiation Oncology, The 2 nd Hospital of China Medical University, Shenyang 110004, China | | 董晓琪 | Center of Radiation Oncology, The 2 nd Hospital of China Medical University, Shenyang 110004, China |
|
| Hits: 3041 |
| Download times: 2357 |
| Abstract:: |
| Objective To discuss the methods of the dosimetric verification in the intensity modulated radiation therapy(IMRT) and insure correct execution of the IMRT planning in the clinical practice. Methods The CMS FOCUS9200 inverse planning system was used to provide optimized 5 field IMRT treatment plans for the patients. A phantom was made from true water equivalent material. The doses of the interesting points and isodose distributions of the interesting planes in the phantom were calculated using patients' treatment plan. The phantom was placed on the couch of the accelerator and was irradiated using the phantom's treatment planning data. The doses of interesting points were measured using a 0 23 cc chamber and the isodose distributions of interesting planes were measured using RIT 113 film dosimetry system in the phantom. The results were compared with those from calculation in planning system for verification. Results The doses and isodose distributions measured by the chamber and the film were consistent with those predicted by the planning. The error between the measured dose and calculated dose in the interesting points was less than 3%. Conclusion The dosimetric verification of IMRT is a reliable measure in the course of its implementation. |
| HTML View Full Text View/Add Comment Download reader |
| Close |
|
|
|
