The TPR2010 based parameterization can be extended to also consider off axis
softening – modify the PK parameters based of the generic Tailor fit.
pencil kernel parameterization:
For details, see:
• Olofsson et al (2006) Med Phys 33, 3418-25
• Nyholm,et al (2006) Phys. Med. Biol. 51, 4111-8
Tailor et al (1998)
Med Phys 25
, 662-7.