Microsoft Word - Scientific Program IGRT 2016 Madrid V3

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Ultrasound
No surrogate required (soft
tissue visualization)
 De Meerleer et al
Marker vs US:
– Remaining random
error same magnitude
as with initial set-up
– CT-contour  US-
structure
– Important inter-user
variability
Van den Heuvel et al, Med.Phys. 2003; 30
Langen et al, IJROBP 2003; 57