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Standard Pencil beam
Kernel scaling by radiological
pathlengths: Only along rayline.
Varian AAA
(Anisotropic Analytical Algorithm)
Kernel scaling by radiological
pathlengths: In 16 direction lateral
directions and along raylines.
Convolution superposition/
Collapsed cone
Kernel scaling by radiological pathlengths:
In all directions, 100+
calculation techniques:
Heterogeneities, comparison between different algorithms: