831 / 1345
Clinical
examination
MR
CT
GTV
good
excellent
poor
Outline of cervix
good
excellent
good
Uterine corpus invasion
poor
excellent
poor
Parametrium (normal &
abnormal)
(good)
Learning curve
good
poor
Vaginal disease
excellent
Excellent for para-
vaginal disease
poor
Comparison of various parameters required for target definition /
contouring
Various targets at brachytherapy on CT:
•
GTV at brachy: no visualization of residual tumor on CT
•
HR-CTV: on CT feasible with Clinical & CT protocol
•
IR-CTV: safety margins to HR-CTV
•
OAR: rectum, bladder and sigmoid