|
KMID : 0357520170400020297
|
|
Journal of Radiological Science and Technology
2017 Volume.40 No. 2 p.297 ~ p.302
|
|
|
A Study on the Photoneutron Dose Estimation in Flattening Filter Mode and Flattening Filter Free Mode for Medical Linear Accelerator
|
|
Yang Oh-Nam
Lim Cheong-Hwan
|
|
|
Abstract
|
|
|
|
In this study, the generation of photoneutrons between the 10 MV FF mode and the FFF mode was evaluated and the amount of photoneutrons generated by the 10 MV and 15 MV energy changes in the FFF mode was evaluated. The generated neutrons were evaluated at 13 measurement points and the KTEPC was used to collect the generated neutrons. 10 MV FF mode was measured at 10 MV FF mode and FFF mode at all measurement points. In the superior direction, 0.455mSv and 0.152mSv were the largest, and more than 33% optical neutron was generated in FF. 10 MV in FFF mode, 15 MV in 15 MV, and 0.402 mSv in the direction of Superior, and 6.9% in the direction.
|
|
|
KEYWORD
|
|
|
Medical Linear Accelerator , Photoneutrons , Korea Tsssue Equivalent Proportional Counter(KTEPC) , Flattening Filter
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|