754 / 1542
Lateral Profiles
• Profiles are forward peaked
• Non-flattened shape
becomes more pronounced
with increasing of field size
and beam energy
• Profiles are minimally
depth dependent (spectra
consistent)
• Flatness is similar when
field size is small (4x4 cm
2
)
6MV FFF
6MV FF
10MV FFF
10MV FF
New beam parameters
Fogliata et al. Med Phys 2012, 39