New method for estimation of fluence complexity in IMRT fields and correlation with gamma analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00224705" target="_blank" >RIV/68407700:21340/15:00224705 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1742-6596/573/1/012056" target="_blank" >http://dx.doi.org/10.1088/1742-6596/573/1/012056</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/573/1/012056" target="_blank" >10.1088/1742-6596/573/1/012056</a>

Result language
angličtina
Original language name
New method for estimation of fluence complexity in IMRT fields and correlation with gamma analysis
Original language description
A new method for estimation of fluence complexity in Intensity Modulated Radiation Therapy (IMRT) fields is proposed. Unlike other previously published works, it is based on portal images calculated by the Portal Dose Calculation algorithm in Eclipse (version 8.6, Varian Medical Systems) in the plane of the EPID aS500 detector (Varian Medical Systems). Fluence complexity is given by the number and the amplitudes of dose gradients in these matrices. Our method is validated using a set of clinical plans where fluence has been smoothed manually so that each plan has a different level of complexity. Fluence complexity calculated with our tool is in accordance with the different levels of smoothing as well as results of gamma analysis, when calculated and measured dose matrices are compared. Thus, it is possible to estimate plan complexity before carrying out the measurement. If appropriate thresholds are determined which would distinguish between acceptably and overly modulated plans, this
Czech name
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Czech description
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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