A rapid method for electron beam energy check.

V J Pisciotta; X Wu; J A Fiedler; C F Serago; M L Calish-Watzich; J G Schwade; P V Houdek

doi:10.1118/1.596801

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A rapid method for electron beam energy check.

V J Pisciotta·X Wu·J A Fiedler·C F Serago·M L Calish-Watzich·J G Schwade·P V Houdek

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Abstract

Assessment of electron beam energy and its long term stability is part of standard quality assurance practice in radiation oncology. Conventional depth-ionization or depth-film density measurements are time consuming both in terms of data acquisition and analysis. A procedure is described utilizing ionization measurements at two energy specific depths. It is based on a linear relationship between electron beam energy and its practical range. Energy shifts within the range covered by the two measurement depths are easily resolved. Within a range of +/- 0.50 MeV (+/- 1.30 MeV) around the established mean incident energy of 5.48 MeV (20.39 MeV), the method accuracy is better than 0.10 MeV.

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V J Pisciotta, X Wu, J A Fiedler, C F Serago, M L Calish-Watzich, J G Schwade, P V Houdek. A rapid method for electron beam energy check.. https://doi.org/10.1118/1.596801

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