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Isocentre Placement 2
•
Reference point
will not need moves/verification
not always suitable for ipsilateral target
•
Centre of PTV
will require daily moves in all directions and
verification
•
Standard moves
will require moves daily and verification but can
be made in whole numbers and only in required
directions
•
For ease of set-up and accuracy no moves from ref.
point is the ideal (high proportion of errors in RT are
in relation to moves) however if needed try to keep
them standard