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The gross tumor volume (GTV)
“There are currently no absolute standards of
how to delineate the GTV.”
Schmidt-Ulrich
et al
, 2006
Defining the GTV:
• Independent of the irradiation techniques.
• Influenced by the oncological considerations.
• Using 3D imaging.
• Done on a CT scan acquired at treatment conditions.
• Represents a snapshot of the anatomy at a given time.
ICRU report 83.
2010;10:41-46.
Schmidt-Ulrich
et al. In: Image-Guided IMRT.
Springer
;2006:304.
How do we define the GTV?