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2D or 3D setup?
2D vs 3D setup
Some users use more frequently 2D planar
setup correction as opposed to using CBCT
Why?
– Speed and ease of use of the software?
– Tradition?
Does it make a quantative difference?
2D vs 3D setup correction
Li et al 2008
– 21 pts, 98 images
– 3 methods of registration:
CBCT, automated match
(LR and AP) Planar, automated match
(LR and AP) Planar, manual match
Same patients, different shifts
Li et al 2008
CBCT Planar automatic Planar manual
C/Planar
imaging
underestimates
the setup error
2D vs 3D setup
10 pts, 65 images
Comparing:
– CBCT
– 2D Planar
– (Digital Tomosynthesis)
2007
65pts 10 fractions registration on
CBCT en 2D planar imaging
Wu et al 2007