AbstractID: 9053 Title: The Monte Carlo Simulated Prostate Brachytherapy Implantation
with 48 IsoAid AdvantageTM 125I Sources
ABSTRACT
The Monte Carlo simulation method for Brachytherapy prostate implantation has
been explored for the first time using 48 AdvantageTM
125
I sources. In this study, the
sources were placed in a spherical prostate of 3 cm in diameter at intervals of 0.5 cm with
a peripheral loading scheme. The doses at different cross sections along the longitudinal
axis of the sources were calculated and the isodose curves were further generated. The
validity and feasibility of the Monte Carlo technique for potential application for
treatment planning in the clinic has then been tested by applying the 108 Gy prescription
dose curves to the simulated doses. A source activity of 0.25 mCi is derived from the
simulated results. The Monte Carlo simulation suggested source activity is found very
close to the value obtained by the widely used clinic planning system VariSeedTM, and
only 4% difference has been observed.
This study indicates that the Monte Carlo
technique is able to support a treatment planning system.
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