Measurement of backscatter to the monitor chamber of medical accelerators using target charge

被引：31

作者：

Lam, KL ^{[1
]}

Muthuswamy, MS ^{[1
]}

Ten Haken, RK ^{[1
]}

机构：

[1] Univ Michigan, Dept Radiat Oncol, Ann Arbor, MI 48109 USA

来源：

MEDICAL PHYSICS | 1998年 / 25卷 / 03期

关键词：

backscatter; monitor chamber; target charge; telescope;

D O I：

10.1118/1.598203

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：

A simple noninvasive method is described for determining the backscatter to a monitor chamber of a medical accelerator based on the measurement of charge deposited in the target. This method is compared quantitatively to the more elaborate telescopic method for photon beams of 6 MV and 15 MV on linear accelerators having mica and Kapton monitor chambers. The new target charge method gives results consistent with the telescopic method to within 0.3%. (C) 1998 American Association of Physicists in Medicine.

引用

页码：334 / 338

页数：5

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