Range = 6 cm SOBP = 3.6 cm

Range = 16 cm SOBP = 10 cm

Range = 27 cm SOBP = 12 cm

2 Gy

4 Gy

2 Gy

4 Gy

2 Gy

4 Gy

RBE proximal

1.104

1.069

1.045

1.026

1.037

1.025

RBE distal

1.334

1.223

1.253

1.166

1.247

1.164

RBE average

1.17

1.113

1.101

1.063

1.088

1.058

Range extension

1 mm

0.6 mm

1.3 mm

0.8 mm

1.4 mm

0.9 mm