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Planning paradigm
Number of recalculations
CRT forward
1
PTV based IMRT
100
Probabilistic planning
100000
Future role of pencil kernel(beam) algorithms?
- fast algorithms for probabilistic planning!!
Tilly and Ahnesjö (2015). Phys. Med. Biol. 60: 5439-54.
….a speedup of over 1000 times compared
to the full pencil kernel calculations. The
speedup versus collapsed cone would be
greater…