Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector
Introduction: Elekta Versa HD linear accelerator is equipped with a universal wedge filter which is a single large physical wedge driven by motors; in other words, motorized wedge. It provides a nominal wedge isodose angle of 60° for the field size of 30×40 sq. cm. Motorized wedge isodose distributi...
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| Format: | Article |
| Language: | English |
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Mashhad University of Medical Sciences
2020-11-01
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| Series: | Iranian Journal of Medical Physics |
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| Online Access: | http://ijmp.mums.ac.ir/article_14115_e2691752b4ec2f58c6a1ebdc182d2163.pdf |
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| author | Jaimin Gamit shreekripa rao Jyothi N Sarath Nair Shambhavi Charan Rechal Dsouza Krishan Sharan Srinidhi Chandraguthi |
| author_facet | Jaimin Gamit shreekripa rao Jyothi N Sarath Nair Shambhavi Charan Rechal Dsouza Krishan Sharan Srinidhi Chandraguthi |
| author_sort | Jaimin Gamit |
| collection | DOAJ |
| description | Introduction: Elekta Versa HD linear accelerator is equipped with a universal wedge filter which is a single large physical wedge driven by motors; in other words, motorized wedge. It provides a nominal wedge isodose angle of 60° for the field size of 30×40 sq. cm. Motorized wedge isodose distribution generated is a combination of open and wedged beam segments. With this background in mind, the present study aimed to validate the planned wedge effective isodose angle.
Material and Methods: The current study validated the planned wedge effective isodose angle for 15°, 30°, 45°, and 60° with 6MV and 15MV for 10x10 sq. cm and 20x20 sq. cm field size. To this end, an analytical formula was applied against a 2D array detector using PTW MultiCheck software.
Results: As illustrated by the obtained results, the calculated, measured, and planned wedge effective isodose angle in this work represented a maximum deviation from its pre-set angle (a nominal wedge angle) of 9° for a 6MV photon energy and 5° for 15MV for field sizes of 10×10 sq. cm and 20×20 sq. cm.
Conclusion: In the present study, we validated the planned wedge effective isodose angle for field sizes of 10x10sq. cm and 20x20sq. cm for 6MV and 15MV photon energies using an analytical method and 2D array detector with a reasonable agreement. |
| first_indexed | 2024-12-12T20:16:00Z |
| format | Article |
| id | doaj.art-4e1c14cce5f2412abf0b9b701ba09075 |
| institution | Directory Open Access Journal |
| issn | 2345-3672 2345-3672 |
| language | English |
| last_indexed | 2024-12-12T20:16:00Z |
| publishDate | 2020-11-01 |
| publisher | Mashhad University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Medical Physics |
| spelling | doaj.art-4e1c14cce5f2412abf0b9b701ba090752022-12-22T00:13:23ZengMashhad University of Medical SciencesIranian Journal of Medical Physics2345-36722345-36722020-11-0117638038510.22038/ijmp.2019.38832.150814115Validation of Motorized Wedge Effective Isodose Angle with a 2D Array DetectorJaimin Gamit0shreekripa rao1Jyothi N2Sarath Nair3Shambhavi Charan4Rechal Dsouza5Krishan Sharan6Srinidhi Chandraguthi7Radiotherapy and Oncology M.Sc Medical Radiation Physics Student School of Allied Health Sciences Manipal Academy of Higher Education Manipal IndiaRadiotherapy and Oncology Assistant Professor in Medical Physics School of Allied Health Sciences Kasturba Medical College Manipal Academy of Higher Education Manipal 576104Radiotherapy and Oncology Senior Grade Lecturer Medical Physics Kasturba Medical College Manipal Academy of Higher Education Manipal IndiaRadiotherapy and Oncology Lecturer Medical Physics Kasturba Medical College Manipal Academy of Higher Education Manipal IndiaRadiotherapy and Oncology Assistant Professor in Medical Physics School of Allied Health Sciences Kasturba Medical College Manipal Academy of Higher Education Manipal IndiaRadiotherapy and Oncology Assistant Professor in Medical Physics School of Allied Health Sciences Kasturba Medical College Manipal Academy of Higher Education Manipal IndiaRadiotherapy and Oncology Professor and Head Kasturba Medical College Manipal Academy of Higher Education Manipal IndiaRadiotherapy and Oncology Senior Grade Lecturer Medical Physics Kasturba Medical College Manipal Academy of Higher Education Manipal IndiaIntroduction: Elekta Versa HD linear accelerator is equipped with a universal wedge filter which is a single large physical wedge driven by motors; in other words, motorized wedge. It provides a nominal wedge isodose angle of 60° for the field size of 30×40 sq. cm. Motorized wedge isodose distribution generated is a combination of open and wedged beam segments. With this background in mind, the present study aimed to validate the planned wedge effective isodose angle. Material and Methods: The current study validated the planned wedge effective isodose angle for 15°, 30°, 45°, and 60° with 6MV and 15MV for 10x10 sq. cm and 20x20 sq. cm field size. To this end, an analytical formula was applied against a 2D array detector using PTW MultiCheck software. Results: As illustrated by the obtained results, the calculated, measured, and planned wedge effective isodose angle in this work represented a maximum deviation from its pre-set angle (a nominal wedge angle) of 9° for a 6MV photon energy and 5° for 15MV for field sizes of 10×10 sq. cm and 20×20 sq. cm. Conclusion: In the present study, we validated the planned wedge effective isodose angle for field sizes of 10x10sq. cm and 20x20sq. cm for 6MV and 15MV photon energies using an analytical method and 2D array detector with a reasonable agreement.http://ijmp.mums.ac.ir/article_14115_e2691752b4ec2f58c6a1ebdc182d2163.pdfxrays radiometry particle accelerators quality control radiotherapy planning computerassisted |
| spellingShingle | Jaimin Gamit shreekripa rao Jyothi N Sarath Nair Shambhavi Charan Rechal Dsouza Krishan Sharan Srinidhi Chandraguthi Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector Iranian Journal of Medical Physics x rays radiometry particle accelerators quality control radiotherapy planning computer assisted |
| title | Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector |
| title_full | Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector |
| title_fullStr | Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector |
| title_full_unstemmed | Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector |
| title_short | Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector |
| title_sort | validation of motorized wedge effective isodose angle with a 2d array detector |
| topic | x rays radiometry particle accelerators quality control radiotherapy planning computer assisted |
| url | http://ijmp.mums.ac.ir/article_14115_e2691752b4ec2f58c6a1ebdc182d2163.pdf |
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