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International Journal of Radiation Research، جلد ۱۵، شماره ۲، صفحات ۱۵۷-۱۶۵
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عنوان انگلیسی Dosimetric accuracy of the Acuros XB and Anisotropic analytical algorithm near interface of the different density media for the small fields of a 6- MV flattening-filter-free beam
چکیده انگلیسی مقاله Background: This study was conducted to assess the accuracy of dose calculation near the air-phantom interface of a heterogeneous phantom for Acuros XB (AXB) and Anisotropic Analytical Algorithm (AAA) algorithm of a           6-MV flattening-filter-free beam, compared with film measurements. Materials and Methods: A phantom included air gap was specially manufactured for this study. In order to evaluate the dose near air gap-phantom interface, Eclipse treatment planning system equipped both AXB and AAA was used for the dose calculations. Measurements in this region were performed with radiochromic film. The central-axis dose (CAD) and off-axis dose (OAD) between calculations and measurements were analyzed for various field sizes and air gaps. The root-mean-square-error (RMSE) was used to evaluate the difference between the calculated and measured OAD. In order to quantify agreement between the calculated and measured dose distributions, the gamma analysis was performed with the 2%/2 mm and 3%/3 mm criteria. Results: For all fields traveling through 1 and 3 cm air gap, the maximum difference in the calculated CAD was -5.3% for AXB and 214.8% for AAA, compared to the measured CAD. For the RMSE between the calculated and measured OAD, the calculated OAD using AXB showed interval in the RMSE (from 4.4 to 12.7) while using AAA indicated broad (from 7.7 to 101.0). In addition, the gamma passing rates showed that AXB was higher agreement than AAA. Conclusion: This study demonstrated that AXB was more accurate in heterogeneous media near air-phantom interface than AAA when comparing the measured data.
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نویسندگان مقاله s w کانگ | s w kang
department of biomedical engineering and research institute of biomedical engineering, college of medicine, the catholic university of korea, korea


j b چانگ | j b chung
department of radiation oncology, seoul national university bungdang hospital, seongnam, korea


j w lee | j w lee
department of radiation oncology, kunkuk university medical center, korea


محمدجواد کیم | m j kim
department of biomedical engineering and research institute of biomedical engineering, college of medicine, the catholic university of korea, korea


y l کیم | y l kim
department of radiologic technology, choonhae college of health sciences, ulsan 689-784, korea


جعفر صادق کیم | j s kim
department of radiation oncology, seoul national university bungdang hospital, seongnam, korea


k y eom | k y eom
department of radiation oncology, seoul national university bungdang hospital, seongnam, korea


علیرضا کیم | i a kim
department of radiation oncology, seoul national university bungdang hospital, seongnam, korea


تهمینه السادات suh | t s suh
department of biomedical engineering and research institute of biomedical engineering, college of medicine, the catholic university of korea, korea
نشانی اینترنتی http://ijrr.com/browse.php?a_code=A-10-1-662&slc_lang=en&sid=en
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/42/article-42-568224.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Radiation Biology
نوع مقاله منتشر شده مرور و بررسی کلی
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