Physics – Medical Physics
Scientific paper
2010-05-24
Physics
Medical Physics
8 pages, 2 figures. Presented on PTCOG 48, Heidelberg, September 28th - October 3rd, 2009
Scientific paper
Tissue and water equivalence of some phantom materials originally developed for conventional radiation therapy was investigated on the ITEP medical proton beam facility. The proton CSDA range in three variants of Plastic Water, lung, adipose, muscle and compact bone substitute materials (CIRS Inc., USA) was measured by a silicon diode as well as the residual proton range in liquid water after passing a slab of each material under investigation. In addition, the proton range in five materials of known elemental composition was calculated by Monte Carlo technique. The obtained results were compared with reference data from ICRU report 49 for respective biological tissues and water. A total uncertainty of the proton range ratios was estimated to be from 0.9 to 1.5% (1SD). Within these uncertainties, Plastic Water, Plastic Water LR, Plastic Water DT, muscle and compact bone demonstrated a good agreement with the reference data. The range in adipose and lung substitutes is a few percents lower than that in the respective tissues.
Khaybullin V. G.
Kostjuchenko V. I.
Riazantsev O. B.
Samarin S. I.
Uglov A. S.
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