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

被引：0
|
作者：
Fayaz, Vahid [1 ]
Amirabadi, Morteza [2 ]
机构：
[1] Islamic Azad Univ, Hamedan Branch, Dept Phys, Tehran, Iran
[2] Islamic Azad Univ, Hamedan Branch, Dept Math, Tehran, Iran
来源：
ADVANCED MATERIALS RESEARCH II, PTS 1 AND 2 | 2012年 / 463-464卷
关键词：
Tray; X-Ray beam; Radiotherapy; SKIN DOSE MEASUREMENTS; ELECTRON CONTAMINATION; PHOTON-BEAM; BUILDUP; SURFACE; HEAD;
D O I：
10.4028/www.scientific.net/AMR.463-464.905
中图分类号：
T [工业技术];
学科分类号：
08 ;
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 (PPC-40) 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 x 10 cm2 fields, Measurements were performed in Solid Water using parallel plate chambers and diode for a 6 MV X-ray beam.
引用
收藏
页码：905 / +
页数：3
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