The Effect of Denser Material than Air in front of Clinical Radiotherapy X-Ray Beam

摘要：

scatter photon produced during radiationtherapy with high energy photons is the main source of unwanted out-of-field and superficial received doses of patients.Surface buildup dose is dependent on electron contamination primarily from the unblocked view of the flattening filter and secondarily from air and collimation systems .We performed a comprehensive set of surface and buildup dose measurements with a thin window parallel-plate(PPC40)chamber to examine effects of attenuating media in front of 6 MV X ray.To evaluate the impact of beam segmentation on buildup dose,measurements were performed with 10×10 cm2 fields,Measurements were performed in Solid Water using parallel plate chambers and diode for a 6 MV Xray beam.

关键词： Tray X-Ray beam Radiotherapy

作者: Vahid Fayaz MORTEZA Amirabadi

作者单位: Department of Physics,Hamedan branch,Islamic Azad University Department of Mathematics,Hamedan branch,Islamic Azad University

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Advanced Material Research(2012 第二届先进材料研究国际会议 ICAMR2012)

会议地点: 成都

会议语种:英文

页码: 905-908

在线出版日期: 2012-01-07（万方平台首次上网日期，不代表论文的发表时间）