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Definitions: Gross Tumour Volume
What is
GTV?
o
According to ICRU 83
o
The gross palpable, visible, or clinically demonstrable extent of the
malignant growth.
o
primary tumour, metastatic lymphnodes or other metastases.
o
Portion of the body with high density of tumor cells…
this means that
contains enough tumor cells to make it detectable with medical tools
2016/Athens