2017_IGRT course book
Ultrasound
▪ De Meerleer et al
No surrogate required (soft tissue visualization)
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
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