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Mahur, Mamta, Singh, Munendra, Gurjar, Om Prakash, Semwal, Manoj Kumar. (1401). Assessment of Surface and Build-up Doses for a 6 MV Photon Beam using Parallel Plate Chamber, EBT3 Gafchromic Films, and PRIMO Monte Carlo Simulation Code. سامانه مدیریت نشریات علمی, 12(5), 455-464. doi: 10.31661/jbpe.v0i0.2101-1274
Mamta Mahur; Munendra Singh; Om Prakash Gurjar; Manoj Kumar Semwal. "Assessment of Surface and Build-up Doses for a 6 MV Photon Beam using Parallel Plate Chamber, EBT3 Gafchromic Films, and PRIMO Monte Carlo Simulation Code". سامانه مدیریت نشریات علمی, 12, 5, 1401, 455-464. doi: 10.31661/jbpe.v0i0.2101-1274
Mahur, Mamta, Singh, Munendra, Gurjar, Om Prakash, Semwal, Manoj Kumar. (1401). 'Assessment of Surface and Build-up Doses for a 6 MV Photon Beam using Parallel Plate Chamber, EBT3 Gafchromic Films, and PRIMO Monte Carlo Simulation Code', سامانه مدیریت نشریات علمی, 12(5), pp. 455-464. doi: 10.31661/jbpe.v0i0.2101-1274
Mahur, Mamta, Singh, Munendra, Gurjar, Om Prakash, Semwal, Manoj Kumar. Assessment of Surface and Build-up Doses for a 6 MV Photon Beam using Parallel Plate Chamber, EBT3 Gafchromic Films, and PRIMO Monte Carlo Simulation Code. سامانه مدیریت نشریات علمی, 1401; 12(5): 455-464. doi: 10.31661/jbpe.v0i0.2101-1274

Assessment of Surface and Build-up Doses for a 6 MV Photon Beam using Parallel Plate Chamber, EBT3 Gafchromic Films, and PRIMO Monte Carlo Simulation Code

Journal of Biomedical Physics and Engineering
مقاله 3، دوره 12، شماره 5، دی 2022، صفحه 455-464    اصل مقاله (1003.75 K)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2101-1274
نویسندگان
Mamta Mahur1، 2؛ Munendra Singh3؛ Om Prakash Gurjar4؛ Manoj Kumar Semwal* 5
1MSc, Department of Radiation Oncology, Delhi State Cancer Institute, Dilshad Garden, Delhi, India
2MSc, Department of Physics, School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, India
3PhD, Department of Physics, School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, India
4PhD, Government Cancer Hospital, Mahatma Gandhi Memorial Medical College, Indore-452001, India
5PhD, Department of Radiation Oncology, Army Hospital (Research & Referral), Delhi Cantonment New Delhi-110010, India
چکیده
Background: Accurate assessment of surface and build-up doses has a key role in radiotherapy, especially for the superficial lesions with uncertainties involved while performing measurements in the build-up region.
Objective: This study aimed to assess surface and build-up doses for 6 MV photon beam from linear accelerator using parallel plate ionization chamber, EBT3 Gafchromic films, and PRIMO Monte Carlo (MC) simulation code.
Material and Methods: In this experimental study, parallel plate chamber (PPC05) and EBT3 Gafchromic films were used to measure doses in a build-up region for 6 MV beam from the linear accelerator for different field sizes at various depths ranging from 0 to 2 cm from the surface with 100 cm source to surface distance (SSD) in a solid water phantom. Measured results were compared with Monte Carlo simulated results using PENELOPE-based PRIMO simulation code for the same setup conditions. Effect of gantry angle incidence and SSD were also analyzed for depth doses at the surface and build-up regions using PPC05 ion chamber and EBT3 Gafchromic films.
Results: Doses measured at the surface were 14.78%, 19.87%, 25.83%, and 31.54% for field sizes of 5×5, 10×10, 15×15, and 20×20 cm2, respectively for a 6 MV photon beam with a parallel plate chamber and 14.20%, 19.14%, 25.149%, and 30.90%, respectively for EBT3 Gafchromic films. Both measurement sets were in good agreement with corresponding simulated results from the PRIMO MC simulation code; doses increase with the increase in field sizes. 
Conclusion: Good agreement was observed between the measured depth doses using parallel plate ionization chamber, EBT3 Gafchromic films, and the simulated depth doses using PRIMO Monte Carlo simulation code.
کلیدواژه‌ها
Chamber؛ Dosimetry؛ Monte Carlo Method؛ Radiotherapy
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