SFUD, IMPT, and Plan Robustness

  • Antony Lomax


Pencil beam scanning (PBS) [28, 60] is rapidly becoming the modality of choice for proton therapy. With this technique, the Bragg peaks of individually weighted proton pencil beams are scanned, or “painted,” over the target volume, through a combination of energy variations and two-dimensional magnetic deflections of the individual beams. In comparison to the more traditional passive scattering approach [34, 35], PBS can be fully automated in its delivery and is workflow efficient and, above all, extremely flexible. For this reason, most new proton facilities have at least one treatment room dedicated to PBS, with more and more new facilities opting for PBS only.


Dose Distribution Bragg Peak Relative Biological Effectiveness Proton Therapy Pencil Beam 
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© Springer India 2016

Authors and Affiliations

  1. 1.Centre for Proton Therapy, Paul Scherrer InstituteVilligenSwitzerland

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