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Pencil kernel characterization
II. Optimisation of kernel shape - with the aid of a test pattern fluence
Ideal
fluence
pattern
Sensitive to radial pencil
kernel properties, but
Ideal
fluence
profile
Actual
fluence
pattern
imperfections in the
fluence modelling will
yield errors in the
resulting pencil kernel.
Actual
fluence
profile
Bergman et al (2004)
Med Phys 31
, 3279-87