Accuracy of parameterized proton range models; a comparison

摘要

An accurate calculation of proton ranges in phantoms or detector geometriesis crucial for decision making in proton therapy and proton imaging. To thisend, several parameterizations of the range-energy relationship exist, withdifferent levels of complexity and accuracy. In this study we compare theaccuracy four different parameterizations models: Two analytical models derivedfrom the Bethe equation, and two different interpolation schemes applied torange-energy tables. In conclusion, a spline interpolation scheme yields thehighest reproduction accuracy, while the shape of the energy loss-curve is bestreproduced with the differentiated Bragg-Kleeman equation.