Evaluation of HDR brachytherapy dose distributions using PRESAGE three-dimensional polymer dosimeter and optical CT readout

S. Siddiqui, S. Brown, S. Bosi, M. Haque, R. Hill, C. Baldock

Research output: Contribution to journalMeeting abstract

Abstract

Method and Materials: An Ir‐192 line source was simulated using Plato treatment planning software to administer 6 Gy at the surface of a vaginal applicator. A series of reference points were generated to identify the dose drop‐off axially, as well as in the anisotropy region. The treatment plan was then used to irradiate the PRESAGE™ polymer dosimeter. The dosimeter was subsequently evaluated using the Vista Optical CT Scanner (Modus Medical Devices Inc.) in conjunction with VistaRecon™ software (Bosi et al 2007). Comparisons were made between the three‐dimensional optical measurements, the treatment plan and Monte Carlo simulations using the PENELOPE. Results: Good comparative agreement was found. The dose agreement in the axial direction from the PRESAGE and TPS was within 4% up to 2cm from the surface of the applicator. Conclusion: The PRESAGE™ dosimeter was shown to have potential as a three‐dimensional dosimeter for use with IMRT, conformal and brachytherapy radiotherapy treatment verification.
Original languageEnglish
Pages (from-to)2731-2731
Number of pages1
JournalMedical Physics
Volume35
Issue number6
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventAAPM Annual Meeting (50th : 2008) - Houston, TX
Duration: 27 Jul 200831 Jul 2008

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