ورود
مقالات فارسیISIکنفرانسهاژورنالها

Physical and Dosimetric Aspect of Euromechanics Add-on Multileaf Collimator on Varian Clinac ۲۱۰۰ C/D

محل انتشار: مجله فیزیک و مهندسی پزشکی، دوره: 9، شماره: 1
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 52

فایل این مقاله در 8 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:
https://civilica.com/doc/1893563

شناسه ملی سند علمی:

JR_JBPE-9-1_004

تاریخ نمایه سازی: 1 بهمن 1402

چکیده مقاله:

Background: Before treatment planning and dose delivery, quality assurance of multi-leaf collimator (MLC) has an important role in intensity-modulated radiation therapy (IMRT) due to the creation of multiple segments from optimization process. Objective: The purpose of this study is to assess the quality control of MLC leaves using EBT۳ Gafchromic films. Material and Methods: Leaf Position accuracy and leaf gap reproducibility were checked with Garden fence test. The garden fence test consists of ۵ thin bands A) ۰.۲ Cm width spaced at ۲ Cm intervals and B) ۱ Cm width spaced at ۱ Cm intervals. Each leaf accuracy was analyzed with measuring the full-width half-maximum (FWHM). Maximum and average leaf transmission were measured with gafchromic EBT۳ films from Ashland for both ۶ MV and ۱۸ MV beams.Results: Leaf positions were found to be in a range between ۱.۷۸ – ۲.۵۳ mm, instead of nominal ۲ mm for the test A and between ۹.۰۹ – ۱۰.۳۶ mm, instead of nominal ۱۰ mm for the test B. The Average radiation transmission of the MLC was noted ۱.۷۹% and ۱.۹۸% of the open ۱۰x۱۰ Cm۲ field at isocenter for ۶ MV and ۱۸ MV beams, respectively. Maximum radiation transmission was noted ۴.۱% and ۴.۴% for ۶ MV and ۱۸ MV beams, respectively. Conclusion: In this study, application of gafchromic EBT۳ films for the quality assurance of Euromechanics multileaf collimator was studied. Our results showed that the average leaf leakage and positional accuracy of this type of MLC were in the acceptance level based on the Protocols.

کلیدواژه ها:

Multileaf Collimator ، Mechanical Test ، Garden Fence Test ، Leaf Transmission ، Leaf End Transmission

نویسندگان

S A Rohani

Department of Medical Physics, Tehran University of Medical Sciences, Tehran, Iran

S R Mahdavi

Radiation biology research center & medical Physics department, faculty of medicine, Iran University of Medical Sciences, Tehran, Iran

A Mostaar

Department of Medical Physics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran

S Ueltzhöffer

Department of Clinic for Radiotherapy and RadioOncology, Medical Faculty Mannheim of the University of Heidelberg, Heidelberg, Germany

R Mohammadi

Department of Medical Physics, Iran University of Medical Sciences, Tehran, Iran

Gh Geraily

Department of Medical Physics, Tehran University of Medical Sciences, Tehran, Iran

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  • Graves MN, Thompson AV, Martel MK, McShan DL, Fraass BA. ...
  • Deng J, Pawlicki T, Chen Y, Li J, Jiang SB, ...
  • Sharpe MB, Miller BM, Wong JW. Compensation of x-ray beam ...
  • Yang Y, Xing L. Using the volumetric effect of a ...
  • Bayouth JE, Wendt D, Morrill SM. MLC quality assurance techniques ...
  • LoSasso T, Kutcher GJ. Multileaf collimation versus alloy blocks: analysis ...
  • LoSasso T, Chui CS, Kutcher GJ, Leibel SA, Fuks Z, ...
  • Galvin JM, Smith AR, Lally B. Characterization of a multi-leaf ...
  • Wang L, Li J, Paskalev K, Hoban P, Luo W, ...
  • Belec J, Patrocinio H, Verhaegen F. Development of a Monte ...
  • Casanova Borca V, Pasquino M, Russo G, Grosso P, Cante ...
  • Farah N, Francis Z, Abboud M. Analysis of the EBT۳ ...
  • International Specialty Products (ISP) [Internet]. Gafchromic™ Dosimetry Media, Type EBT-۳. ...
  • Chui CS, Spirou S, LoSasso T. Testing of dynamic multileaf ...
  • Bhardwaj AK, Kehwar TS, Chakarvarti SK, Oinam AS, Sharma SC. ...
  • Venencia CD, Besa P. Commissioning and quality assurance for intensity ...
  • Mamalui-Hunter M, Li H, Low DA. MLC quality assurance using ...
  • Chang J, Obcemea CH, Sillanpaa J, Mechalakos J, Burman C. ...
  • Baghani HR, Aghamiri SM, Mahdavi SR, Robatjazi M, Zadeh AR, ...
  • Falahati F, Nickfarjam A, Shabani M. A feasibility study of ...
  • Devic S, Seuntjens J, Sham E, Podgorsak EB, Schmidtlein CR, ...
  • Sorriaux J, Kacperek A, Rossomme S, Lee JA, Bertrand D, ...
  • Antypas C, Floros I, Rouchota M, Armpilia C, Lyra M. ...
  • Sumida I, Yamaguchi H, Kizaki H, Koizumi M, Ogata T, ...
  • Klein EE, Hanley J, Bayouth J, Yin FF, Simon W, ...
  • Kirby M, Ryde S, Hall C. Acceptance testing and commissioning ...
  • Losasso T. IMRT delivery performance with a varian multileaf collimator. ...
  • Li J, Zhang X-Z, Gui L-G, Zhang J, Tang X-B, ...
  • Das IJ, Desobry GE, McNeeley SW, Cheng EC, Schultheiss TE. ...
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