High dose rate brachytherapy source measurement intercomparison

被引：0
作者：
Joel Poder
Ryan L. Smith
Nikki Shelton
May Whitaker
Duncan Butler
Annette Haworth
机构：
[1] Chris O’Brien Lifehouse,Radiation Oncology
[2] University of Wollongong,Centre of Medical Radiation Physics
[3] The Alfred Hospital,Alfred Health Radiation Oncology
[4] RMIT University,School of Applied Sciences
[5] The Austin Hospital,Olivia Newton John Cancer and Wellness Centre
[6] Australian Radiation Protection and Nuclear Safety Agency,School of Physics
[7] Physical Sciences,undefined
[8] Peter MacCallum Cancer Centre,undefined
[9] University of Sydney,undefined
来源：
Australasian Physical & Engineering Sciences in Medicine | 2017年 / 40卷
关键词：
Brachytherapy; Well-chamber; Calibration; Intercomparison;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This work presents a comparison of air kerma rate (AKR) measurements performed by multiple radiotherapy centres for a single HDR 192Ir source. Two separate groups (consisting of 15 centres) performed AKR measurements at one of two host centres in Australia. Each group travelled to one of the host centres and measured the AKR of a single 192Ir source using their own equipment and local protocols. Results were compared to the 192Ir source calibration certificate provided by the manufacturer by means of a ratio of measured to certified AKR. The comparisons showed remarkably consistent results with the maximum deviation in measurement from the decay-corrected source certificate value being 1.1%. The maximum percentage difference between any two measurements was less than 2%. The comparisons demonstrated the consistency of well-chambers used for 192Ir AKR measurements in Australia, despite the lack of a local calibration service, and served as a valuable focal point for the exchange of ideas and dosimetry methods.
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页码：377 / 383
页数：6
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