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Pencil kernel characterization
V. Beam quality index as single parameter to determine pencil beam kernels
Incident photons
T Nyholm, et al (2006)
Radiother Oncol 78
, 347-51.
20/10
D(10 10,
20cm)
TPR
D(10 10,
10cm)
z
z
× =
=
× =
Isocenter
distance
10 cm
10 cm
10 cm