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Tissue substitutes
Real tissues
*
Verified for proton stopping power by
measurements in a sheep head
Stoichiometric calibration: An improved approach
U. Schneider et al PMB 1996
stoichiometric approach
K
e
s
ρ ρ
=
Calibration based on tissue substitutes only is very sensitive to material
chosen. Different substitutes give different calibration curves
tissue substitute approach