Development and Implementation of a Remote Audit Tool for High Dose Rate (HDR) 192Ir Brachytherapy Using Optically Stimulated Luminescence Dosimetry

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Development and Implementation of a Remote Audit
Tool for High Dose Rate (HDR) 192Ir Brachytherapy
Using Optically Stimulated Luminescence
Dosimetry Kevin Casey1, Paola Alvarez1, Ann
Lawyer1, Stephen Kry1, Rebecca Howell1, Scott
Davidson2, David Followill11Dept of Radiation
Physics, UT MD Anderson Cancer Center, Houston,
TX, 2The Methodist Hospital, Houston, TX
Quantity Uncertainty, Nucletron Uncertainty, Varian
Reading 0.57 0.57
ECF 0 0
Sensitivity 0.8 0.8
KF 0.3 0.3
KL 0.15 0.15
KB 0.6 0.7
Total (2s) 2.4 2.5
Institution Source Model RPC/Inst Ratio
1 Nucletron 0.989
2 Varian 1.005
3 Varian 1.001
4 Nucletron 0.999
5 Nucletron 1.014
6 Varian 0.983
7 Nucletron 1.012
8 Varian 0.996
Average 1.000
Table 3 Institution audit results from system
feasibility study.
Nucletron Varian
n 20 10
Average 1.026 1.000
Standard Deviation 0.6 0.7
99 Confidence Interval 1.022 1.029 0.993 1.007
Support This investigation was supported by PHS
grant CA10953 awarded by the NCI, DHHS.