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http://dx.doi.org/10.5392/JKCA.2014.14.08.225

The Comparison of Dose Distribution on Radiation Therapy between IMRT and VMAT in Modified Radical Mastectomy Patients  

Ko, Hye-Jin (조선대학교병원 방사선종양학과)
Kim, Young-Jae (대구보건대학교 방사선과)
Jang, Seong-Joo (동신대학교 방사선학과)
Publication Information
The Journal of the Korea Contents Association / v.14, no.8, 2014 , pp. 225-232 More about this Journal
Abstract
Underwent on modified radical mastectomy(MRM) and radiation therapy, it affects increasing rates of chronic morbidity, because of including chest wall and internal mammary nodes(IMNs). It causes the high absorbed dose on heart and ipsilateral lung. Thus in this study, we compared dose distributions through utilizing the intensity modulated radiation therapy(IMRT) and the volumetric modulated arc therapy(VMAT). We selected 10 breast cancer patients at random who took MRM and radiation therapy. Treatment plannings were done by using IMRT and VMAT from each patient ranging supraclavicular lymphnodes(SCL) and IMNs. After that we analysed the planning target volume(PTV)'s conformity and absorbed doses on heart and lungs. As a results, PTV conformities were indicated the same patten(p<0.05) in both plans. In case of Lt breast cancer patients, the dose maximum regions of the heart were more lesser in VMAT technique rather than the IMRT(p<0.05). Also, the maximum dose areas of lungs were lesser in VMAT technique rather than the IMRT(p<0.05). Therefore, it would be safe to say that it is more effective way to adapt the VMAT technique than IMRT in such cases like involve IMNs in breast cancer patients.
Keywords
Breast Cancer; Intensity Modulated Radiation Therapy; Volumetric Modulated Arc Therapy;
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