Open AccessCentral axis depth dose for a 2.5 MV Van de Graaff generator
Author(s) -
Donald W. Anderson,
D. E. Raeside,
R. I. Adams,
Myron R. Goede
Publication year - 1976
Publication title -
american journal of roentgenology
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 196
eISSN - 1546-3141
pISSN - 0361-803X
DOI - 10.2214/ajr.126.6.1260
Subject(s) - van de graaff generator , medicine , nuclear medicine , imaging phantom , bremsstrahlung , percentage depth dose curve , generator (circuit theory) , beam (structure) , optics , physics , ionization chamber , photon , power (physics) , ion , quantum mechanics , ionization
Central axis percentage depth dose values and isodose curves for the bremsstrahlung beam from a 2.5 MV Van de Graaff generator were measured with a water phantom at 100 cm target-to-surface distance. Tissue-air ratios were calculated from the central axis depth dose data. Use of the 2.5 MV percentage depth dose values are necessary for treatment planning since they are substantially larger than the values given in compilations for 2.0 MV beams.