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Tumor Gross Volume: GTV
•
GTV is defined based on
clinical data
(inspection, palpation)
and
imaging
(CT, MR, US, PET depending on it’s relevance for
the tumor site)
•
Definition of the GTV allows for
TNM classification
of the
disease
•
Definition of the GTV allows for
tumor response assessment
•
Adequate dose to GTV is therefore crucial for tumor control