1110 / 1542
(in-vivo studies, Center of SOBP)
RBE for protons
•
Clinically, a value of 1.1 is adopted
•
Increased RBE potentially relevant at distal edge
•
RBE may lead to effective over-range of 1-2mm
(Paganetti 2002)
(in-vitro studies, Center of SOBP)
Residual range: ~25
m
m → Bragg peak position
(Paganetti 2002, mono-energ tic Protons, in-vitro)
Some protons are more equal than others