|
KMID : 0357520100330030253
|
|
Journal of Radiological Science and Technology
2010 Volume.33 No. 3 p.253 ~ p.260
|
|
|
A Study on the Dose Changes Depending on the Shielding Block Type of Irradiation During Electron Beam Theraphy
|
|
Lee Sun-Yeob
Park Cheol-Soo
Lee Jae-Seung
Goo Eun-Hoe
Cho Jae-Hwan
Kim Eng-Chan
Moon Soo-Ho
Kim Jin-Soo
Park Cheol-Woo
Dong Kyung-Rae
Kweon Dae-Cheol
|
|
|
Abstract
|
|
|
|
The primary focus of this study was to explore the variation in dose distributions of electron beams between different types of construction structure of cut-out blocks embodied in electron cones, given that the structure is considered one of the causes of multiple scattered radiation from electrons which may affect dose distributions. For evaluation, two types of cut-out blocks, divergency and straight, manufactured for this study, were compared in terms of area of interval in distribution of dose, and flatness and symmetric state of surface being radiated. The results showed that divergency cut-out blocks reduced the lateral scattering effects on the thickness of cut-out blocks more substantially than straight ones, leading to more uniform dose distribution at baseline depth. Notably in divergency cut-out blocks, the high dose area decreased more significantly, and more uniform dose distribution was observed at the edge of the irradiated field. This points to a need to consider the characteristics of dose distribution of electron beams when setting up radiotherapy planing at the venues. Therefore, this study is significant as an exploratory work for ensuring high accuracy in dose delivery for patients.
|
|
|
KEYWORD
|
|
|
multiple scattering, cut-out block in electron cones, dose distribution, flatness of irradiated field, symmetric state of irradiated field
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|