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SU‐GG‐T‐212: A Complete Predictive Model for a Dedicated Ocular Proton Radiotherapy Beamline
Author(s) -
Erkens I,
Daartz J,
Cascio E,
Kooy H,
Engelsman M
Publication year - 2008
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.2961964
Subject(s) - sobp , proton therapy , physics , range (aeronautics) , aperture (computer memory) , optics , modulation (music) , beamline , beam (structure) , nuclear medicine , materials science , acoustics , medicine , composite material
Purpose: To report on our establishment of a complete prediction model for a proton therapy delivery system exclusively used for the treatment of ocular melanoma. Method and Materials: Our ocular beamline, with a maximum range ( R ) of 4cm, employs a large library of range modulator wheels to deliver flat SOBPs with any R and almost any modulation width ( M ). We quantified the effect on the output of R, M , aperture size, off‐axis ratio, and modulator wheel design. Output measurements were obtained for an extensive set of SOBP ranges, modulation widths, and field sizes. Results: For the output model to be applicable for both partial modulation (M 90