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Iranian Journal of Medical Physics، جلد ۱۴، شماره ۴، صفحات ۲۵۷-۲۶۳
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عنوان انگلیسی Field-In-Field Plan Versus Tangential Wedged Beam Plan in Chest Wall Radiotherapy of Post-Mastectomy Patients: Treatment Planning Study
چکیده انگلیسی مقاله Introduction: In this study, dose distribution of the chest wall in post-mastectomy breast cancer patients was evaluated and compared in the tangential wedged beam (TWB) and field-in-field (FIF) plans. Materials and Methods: Thirty-six patients with left-sided breast cancer were enrolled in this study. The FIF and TWB plans were generated for each patient to compare dosimetric parameters of the chest wall. The maximum dose (Dmax), homogeneity index (HI), conformity index (CI), and uniformity index (UI) were defined and used for comparison of the dosimetric parameters of the planning target volume (PTV) in both FIF and TWB plans. The percentage of volumes receiving at least 10, 20, 30, and 40 Gy of the left lung and 5, 10, 20, 25 and 30 Gy of the heart were used to compare the dosimetric results of the organs at risk. Statistical analysis was performed using SPSS, version 20. Results: The FIF plan had significantly lower HI (P=0.000) than the TWB plan, indicating that the FIF plan was better than the TWB plan in PTV. The V40lung (15.36±4.35 vs. 18.37±4.42) and V30heart (8.15±3.75 vs. 10.94±3.94; P=0.000) were significantly lower in the FIF plan than in the TWB plan. In addition, the monitor unit (MU) was significantly lower in the FIF plan than in the TWB plan (227.76 vs. 323.59; P=0.000). Conclusion: The FIF plan significantly reduced the dose volume of the left lung and heart in post-mastectomy radiotherapy compared to the TWB plan. Therefore, the FIF plan is recommended for this purpose.
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نویسندگان مقاله مهران یاراحمدی | mehran yarahmadi
medical physics dept., kurdistan university of medical sciences, sanandaj, iran.


بهار فرامرزی | bahar faramarzi
department of medical physics, school of medicine, kermanshah university of medical sciences, kermanshah, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (Kermanshah university of medical sciences)

عباس حق پرست | abbas haghparast
department of medical physics, faculty of medicine, kermanshah, iran.


زینب saalehi | zeinab saalehi
tohid hospital, department of radiotherapy, kurdistan university of medical sciences, sanandaj, iran.
نشانی اینترنتی http://ijmp.mums.ac.ir/article_9164.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Paper
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