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dc.contributor.authorLangner, U.W.
dc.contributor.authorMundis, M.
dc.contributor.authorStrauss, D.
dc.date.accessioned2019-05-17T12:53:06Z
dc.date.available2019-05-17T12:53:06Z
dc.date.issued2018
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85037652699&doi=10.1002%2facm2.12235&partnerID=40&md5=ed915c86c2bf507658fd8e8a15dc9f75
dc.identifier.urihttp://hdl.handle.net/10713/9105
dc.description.abstractObjective: Analytical dose calculation algorithms for Eclipse and Raystation treatment planning systems (TPS), as well as a Raystation Monte Carlo model are compared to corresponding measured point doses. Method: The TPS were modeled with the same beam data acquired during commissioning. Thirty‐five typical plans were made with each planning system, 31 without range shifter and four with a 5 cm range shifter. Point doses in these planes were compared to measured doses. Results: The mean percentage difference for all plans between Raystation and Eclipse were 1.51 ± 1.99%. The mean percentage difference for all plans between TPS models and measured values are −2.06 ± 1.48% for Raystation pencil beam (PB), −0.59 ± 1.71% for Eclipse and −1.69 ± 1.11% for Raystation monte carlo (MC). The distribution for the patient plans were similar for Eclipse and Raystation MC with a P‐value of 0.59 for a two tailed unpaired t‐test and significantly different from the Raystation PB model with P = 0.0013 between Raystation MC and PB. All three models faired markedly better if plans with a 5 cm range shifter were ignored. Plan comparisons with a 5 cm range shifter give differences between Raystation and Eclipse of 3.77 ± 1.82%. The mean percentage difference for 5 cm range shifter plans between TPS models and measured values are −3.89 ± 2.79% for Raystation PB, −0.25 ± 3.85% for Eclipse and 1.55 ± 1.95% for Raystation MC. Conclusion: Both Eclipse and Raystation PB TPS are not always accurate within ±3% for a 5 cm range shifters or for small targets. This was improved with the Raystation MC model. The point dose calculations of Eclipse, Raystation PB, and Raystation MC compare within ±3% to measured doses for the other scenarios tested. Copyright 2018 American Association of Physicists in Medicine.en_US
dc.description.urihttps://dx.doi.org/10.1002/acm2.12235en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley and Sons Ltden_US
dc.relation.ispartofJournal of Applied Clinical Medical Physics
dc.subjectMonte Carlo methodsen_US
dc.subjectTreatment planningen_US
dc.titleA comparison of two pencil beam scanning treatment planning systems for proton therapyen_US
dc.typeArticleen_US
dc.identifier.doi10.1002/acm2.12235
dc.identifier.pmid29205763


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