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Imaging for target definition
•
Slow 3D-CT
Ø
Images acquired in breathhold are
NOT
representative for treatment!
Ø
Images acquired in free breathing are associated with multiple
uncertainties:
§
Size and shape of the target?
§
Target position / organs at risk?
§
Motion range and trajectory of target and organs at risk?
SBRT 2016 - D. Verellen
13
Garcia
et al.
, 2006
4D-CT image artifact reduction