What happens in the other 99.6% ?
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There are many small unavoidable errors (mm
size) in all steps of radiotherapy
•
In some cases many of these small errors point in the
same direction
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I.e., in some patients large (cm) errors occur(ed)
•
This is not a fault, this is purely statistics
•
What effect does this have on treatment?
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We do not really know!