749 / 1481
7)
CONCLUSION
•
GTV-CTV-ITV
concept in cervical cancer quite complex
•
GTV
has primary and lymphatic component
– Primary GTV often gets brachy boost
– Node GTV gets EBRT boost
•
CTV
has primary and lymphatic component
– CTV needs elective EBRT
•
ITV
includes total CTV
– Gets elective EBRT
– CTV-ITV margin compensates for internal mobility and deformation
– Extent of CTV-ITV margin depends on position verification method