Thermoluminescent dosimetry of the Symmetra 125I model I25.S06 interstitial brachytherapy seed.
Thermoluminescent dosimetry of the Symmetra 125I model I25.S06 interstitial brachytherapy seed.
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Symmetra 125I 型号 I25.S06 间质近距离放射治疗种子的热释光剂量测定。
DOI:
10.1118/1.1388218
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发表时间:
2001
期刊:
影响因子:
3.8
通讯作者:
Harrison,LB
中科院分区:
文献类型:
--
作者:
Patel,NS;Chiu-Tsao,ST;Williamson,JF;Fan,P;Duckworth,T;Shasha,D;Harrison,LB
As the efficacy of brachytherapy prostate treatment is becoming realized, new models of seeds are being introduced. In this article we present thermoluminescent dosimetry (TLD) in a solid water phantom for a new design of seed (UroMed/Bebig Symmetra™, Model I25.S06). TLD cubes, LiF TLD‐100, from Bicron (Solon, OH) with dimension were irradiated at various distances from the seed at angles ranging from 0° to 90° in 10° increments. The TLD detectors were calibrated by irradiation in a teletherapy beam. Monte Carlo simulation was used to account for TLD energy dependence and the deviation of solid water composition (as determined by chemical analysis of a sample) from liquid water. Dose rates per unit air kerma strength were determined based on calibrations traceable to the 1999 NIST standard (corrected for NIST measurement errors made in 1999) for the Symmetra™ seed. Dose data is presented in TG‐43 format as a function of distance and angle. Values for Λ, and the anisotropy constant are obtained for use in radiation treatment planning (RTP) software. The dose rate constant was determined to be which is comparable to model 6702 and higher than model 6711. We find the relative dose distributions of the Symmetra™ seed are similar to model 6702, and less anisotropic than model 6711. After accounting for deviation of measured solid water composition from the manufacturer's specification, good agreement between TLD results and Monte‐Carlo‐aided values was found.
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DOI:
--
发表时间:
1984
期刊:
Medical Physics (Lancaster)
影响因子:
--
作者:
K. Weaver
通讯作者:
K. Weaver
影响因子:
3.8
作者:
Chiu-Tsao,ST;Anderson,LL;O'Brien,K;Sanna,R
通讯作者:
Sanna,R
DOI:
--
发表时间:
1990
期刊:
International Journal of Radiation Oncology, Biology, Physics
影响因子:
--
作者:
G. Luxton;M. Astrahan;David O. Findley;Zbigniew Petrovich
通讯作者:
Zbigniew Petrovich
DOI:
--
发表时间:
1998
期刊:
Medical Physics (Lancaster)
影响因子:
--
作者:
J. Williamson;B. Coursey;L. Dewerd;W. Hanson;R. Nath
通讯作者:
R. Nath
DOI:
--
发表时间:
1998
期刊:
Medical Physics (Lancaster)
影响因子:
--
作者:
K. Weaver
通讯作者:
K. Weaver