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International Journal of Radiation Research، جلد ۱۵، شماره ۲، صفحات ۱۷۷-۱۸۳
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چکیده فارسی مقاله
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عنوان انگلیسی Radiation treatment planning for prostate cancer: A new dosimetric comparison of five and seven fields IMRT plans
چکیده انگلیسی مقاله Background: To compare the dosimetric coverage of the planning target volume (PTV) and the dose delivered to the main Organs at Risk (OARs) in 5 and 7-field techniques of Intensity Modulated Radiation Therapy (IMRT) in patients with local prostate cancer. Materials and Methods: Twelve patients with local prostate cancer underwent 5 and 7-field IMRT planning. The delivery of IMRT was carried out using the sliding technique. The dose coverage for PTV was designated to ≥98% of the PTV covered by 95% of the prescribed dose. Dose conformity was evaluated by comparing the volume of nontarget tissue receiving maximum, and average of the prescribed dose and the dose of 33%, 50%, and 66% of the volumes on both planning sets. For target, this evaluation was made with comparing the Conformity Index (CI) and Inhomogeneity Index (HI). In addition, we compared the monitor units used for dose delivery in both planning techniques. Results: All the 5 and 7-field IMRT plans differed slightly in the measured parameters, and none of them have statistically significant differences with each other except for the monitor units where significant differences were observed in favor of the 5-field IMRT plans (p=0.000). In all of the 5-field IMRT plans the mean dose delivered to OARs were very similar or less than that of the 7-field plans. Conclusion: In comparison to the 7-field technique, the 5-field IMRT technique has resulted in improved IMRT dose conformity, homogeneity, and lesser MUs used for radiation therapy. However, this difference was not significant.
کلیدواژه‌های انگلیسی مقاله IMRT, dose conformity, MUs, prostate cancer
نویسندگان مقاله s r m مهدوی | s r m mahdavi
department of medical physics, iran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (Iran university of medical sciences)

e جزایری قره باغ | e jazayeri gharehbagh
department of medical physics, iran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (Iran university of medical sciences)

علیرضا نیکوفر | a r nikoofar
department of radiation oncology, iran university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (Iran university of medical sciences)

b مفید | b. mofid
department of radiation oncology, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

m واشقانی | m. vasheghani
department of radiotherapy, pars general hospital, keshavarz bolv., tehran iran


d ساعدی | d. saedi
department of radiology, pars general hospital, keshavarz bolv., tehran iran
نشانی اینترنتی http://ijrr.com/browse.php?a_code=A-10-1-664&slc_lang=en&sid=en
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/42/article-42-568226.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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