BACKSCATTERING AND TRANSMISSION THROUGH A HIGH-Z INTERFACE AS A MEASURE OF ELECTRON-BEAM ENERGY

被引：7

作者：

DAS, IJ ^{[1
]}

BUSHE, HS ^{[1
]}

机构：

[1] UNIV MASSACHUSETTS, MED CTR, DEPT RADIAT ONCOL, WORCESTER, MA 01655 USA

来源：

MEDICAL PHYSICS | 1994年 / 21卷 / 02期

关键词：

INTERFACE DOSIMETRY; ELECTRON BEAM; BACKSCATTER; TRANSMISSION; BEAM ENERGY; QUALITY ASSURANCE;

D O I：

10.1118/1.597375

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

The ratio of electron beam transmission (Tr) and backscattering (Bs) is used as a measure of beam energy. With a proper thickness of high Z medium placed at the surface of a low Z homogeneous medium, it is observed that the function log(Tr/Bs) is a linear function of electron energy. This method is applied to electrons produced with scattering foil and pulse-Swept (scanned) beams for the nominal energies ranging from 6 to 20 MeV. This technique provides a unique alternative method which is easy, simple, and accurate within +/-3% for estimation of electron beam energy.

引用

页码：315 / 319

页数：5