Quantitative and analytical comparison of isodose distributions for shaped electron fields from ADAC Pinnacle treatment planning system and Monte Carlo simulations

We assess the accuracy of ADAC Pinnacle 3 commercial treatment planning system (TPS) in computation of isodose distributions for shaped electron fields. The assessment is based on comparison of dose profiles generated by TPS and a Monte Carlo model for different beam energies, applicator sizes, and...

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Bibliographic Details
Published in:Applied radiation and isotopes 2010-12, Vol.68 (12), p.2174-2180
Main Authors: Ishmael Parsai, E., Shvydka, Diana, Kang, Jun, Chan, Philip, Pearson, David, Ahmad, Faheem
Format: Article
Language:English
Subjects:
ADAC Pinnacle treatment planning
Electron isodose distribution
Electrons
Monte Carlo Method
Monte Carlo simulation
Radiation therapy
Shaped electron fields
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Summary:We assess the accuracy of ADAC Pinnacle 3 commercial treatment planning system (TPS) in computation of isodose distributions for shaped electron fields. The assessment is based on comparison of dose profiles generated by TPS and a Monte Carlo model for different beam energies, applicator sizes, and percentages of field blocking. Dose differences of up to 14% are observed at the depth of maximum dose. These discrepancies, often ignored in clinical evaluations, are attributable to inadequate modeling of scatter from applicators and blocks by TPS.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2010.04.026