Technical Note: Output and energy fluctuations of the tomotherapy Hi-Art helical tomotherapy system

被引：14

作者：

Mahan, SL ^{[1
]}

Chase, DJ ^{[1
]}

Ramsey, CR ^{[1
]}

机构：

[1] Thompson Canc Survival Ctr, Knoxville, TN 37916 USA

来源：

MEDICAL PHYSICS | 2004年 / 31卷 / 07期

关键词：

helical tomotherapy; dose calibration; energy;

D O I：

10.1118/1.1763007

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 output and energy calibrations for the first clinical Hi-Art 2.0 helical tomotherapy system have been reviewed. Fixed-gantry/fixed-couch and rotational-gantry/fixed-couch measurements were made on a daily basis over a period of 20 weeks to investigate system stability. Static gantry measurements were taken at 10 cm depth in a rectangular stack of Virtual Water at an SSD distance of 90 cm and a field size of 5 x 40 cm. Rotational gantry measurements were taken in a cylindrical phantom Virtual Water phantom for a field size of 5 x 40 cm. The Hi-Art 2.0 system has maintained its calibration to within +/-2% and energy to within +/-1.5% over the initial 20 week period. (C) 2004 American Association of Physicists in Medicine.

引用

页码：2119 / 2120

页数：2

共 7 条

[1] AAPM's TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams [J].