Dose 2016

Pencil kernel characterization

I. Radial differentiation of relative dose on CAX (using quantities describing broad beam dosimetric data).

Dashed line :MC Solid line: exp

1

( ) ,

( ) zr ,

zrd =

D

meas rel,

drr

2

π

6 MV

Ignored: • Beam divergence • Off-axis changes in fluence • Off-axis softening

z

2 r

CP Ceberg, et al (1996) Med Phys 23 , 505-11.

25 MV