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Proton penetration and control in nonhomogeneous phantoms
Author(s) -
Wingate Catharine L.,
Archambeau John O.,
Koehler Andreas M.,
Bennett Gerald W.
Publication year - 1977
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 - 10.1118/1.594365
Subject(s) - imaging phantom , bolus (digestion) , proton therapy , penetration (warfare) , bragg peak , beam (structure) , materials science , nuclear medicine , dosimetry , pencil beam scanning , optics , physics , medical physics , medicine , mathematics , surgery , operations research
Accurate bolus is needed for extension of Bragg‐peak therapy. Proton beam‐stopping profiles in a lucite–styrofoam–tissue phantom and in a Rando phantom were recorded photographically. Air volumes caused the largest distortions. Lucite bolus was cut to achieve desired beam‐stopping profiles. Verification of bolus effect in situ will be important to control beam penetration within 5 mm.