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Falahati, F, Nickfarjam, A, Shabani, M. (1397). A Feasibility Study of IMRT of Lung Cancer Using Gafchromic EBT3 Film. سامانه مدیریت نشریات علمی, 8(4), 347-356. doi: 10.31661/jbpe.v0i0.791
F Falahati; A Nickfarjam; M Shabani. "A Feasibility Study of IMRT of Lung Cancer Using Gafchromic EBT3 Film". سامانه مدیریت نشریات علمی, 8, 4, 1397, 347-356. doi: 10.31661/jbpe.v0i0.791
Falahati, F, Nickfarjam, A, Shabani, M. (1397). 'A Feasibility Study of IMRT of Lung Cancer Using Gafchromic EBT3 Film', سامانه مدیریت نشریات علمی, 8(4), pp. 347-356. doi: 10.31661/jbpe.v0i0.791
Falahati, F, Nickfarjam, A, Shabani, M. A Feasibility Study of IMRT of Lung Cancer Using Gafchromic EBT3 Film. سامانه مدیریت نشریات علمی, 1397; 8(4): 347-356. doi: 10.31661/jbpe.v0i0.791

A Feasibility Study of IMRT of Lung Cancer Using Gafchromic EBT3 Film

Journal of Biomedical Physics and Engineering
مقاله 2، دوره 8، شماره 4، اسفند 2018، صفحه 347-356    اصل مقاله (1.05 M)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.791
نویسندگان
F Falahati1؛ A Nickfarjam* 2، 3؛ M Shabani4
1ShahidMedical Physics Department, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Sadoughi University of Medical Sciences
2Medical Physics Department, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
3Radiotherapy Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
4Shahid Sadoughi University of Medical SciencesRadiotherapy Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
چکیده
Background: Intensity modulated radiation therapy (IMRT) is an advanced method for delivery of three dimensional therapies, which provides optimal dose distribution with giving multiple nonuniform fluency to the patient. The complex dose distribution of IMRT should be checked to ensure that the accurate dose is delivered. Today, film dosimetry is a powerful tool for radiotherapy treatment Quality Assurance (QA) and a good method to verify dose distribution in phantoms.
Objective: This study aimed to evaluate the accuracy of IMRT treatment planning system, Prowess Panther® software, with Gafchromic EBT3 films in a inhomogeneity phantom.
Material and Methods: The IMRT plan was generated by Prowess Panther® treatment planning system (TPS) version 5.2 on a inhomogeneity phantom, then it was irradiated by ONCOR linear accelerator (Linac) with 6 (MV) photon beam energy. The Gafchromic EBT3 film located between the phantom has measured the dose distribution.To compare between TPS calculated doses and film measured doses, Gamma criteria 3%/3 mm, 4%/4 mm, 5%/5 mm, 6%/6 mm and 7%/7 mm Dose Difference (DD) and Distance to Agreement (DTA), respectively were used.
Results: Gammas passing rates for PTV are obtained 67.5% for 3%/3mm, 78.8% for 4%/4mm, 86.3% for 5%/5mm, 91.2% for 6%/6mm and 94.3% for 7%/7mm and for organs at risk is 72.4% for 3%/3mm, 82.8% for 4%/4mm, 89.8% for 5%/5mm, 93.3% for 6%/6mm and 95.4% for 7%/7mm (respectively DD/DTA). By increasing the range of criteria the capability increased.
Conclusion: The results show that the use of EBT3 film in a inhomogeneity phantoms allows us to evaluate the dose differences between the EBT3 measured dose distribution and TPS calculated dose distribution .Hence, a result Prowess Panther® TPS can be used for IMRT technique treatment.
کلیدواژه‌ها
Radiotherapy؛ IMRT QA؛ Prowess Panther®؛ Inhomogeneity Phantom؛ Lung Cancer؛ Gafchromic EBT3 Film؛ Gamma Analysis
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