Dose 2016

Pencil beam kernel parameterization - 1

PB kernel represented as double exponential, tabulated over depth

4 parameters required at each depth ( z ) for a given photon beam

This is the PB kernel parameterization in Oncentra TPS (formely Helax-TMS)

A Ahnesjö et al (1992) Med Phys 19, 263-273