Rana, Suresh Measurements of lateral penumbra for uniform scanning proton beams under various beam delivery conditions and comparison to the XiO treatment planning system. [electronic resource] - Medical physics Sep 2013 - 091708 p. digital Publication Type: Comparative Study; Journal Article ISSN: 2473-4209 Standard No.: 10.1118/1.4818283 doi Subjects--Topical Terms: AirPhantoms, ImagingProton Therapy--methodsRadiotherapy Planning, Computer-Assisted--methods