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. Author manuscript; available in PMC: 2007 Oct 17.
Published in final edited form as: Med Phys. 2007 Mar;34(3):923–934. doi: 10.1118/1.2436972

Fig. 4.

Fig. 4

Simulated data of a dose point in the penumbra region of the beam for three types of motion: (a) sin(x) (b) sin4(x), and (c) sin6(x) and for a breathing period of 4 s. The point is irradiated with a beam with either 10 or 100 segments of identical MU value. The error bars represent one (1) standard deviation around the mean, corresponding to the 68% confidence level.