792 / 1311
•
GTV-T:
–
accurate in definition of
length
with threshold (GTV
20%), not good for the entire GTV
–
Decrease
variability
(inter-intra)
•
GTV-N:
–
high specificity
90%
–
low sensitivity
57%:
–
Poor spatial resolution
(nodes adjacent to the primary)
–
Partial volume effect
(size 5-10mm)
PET for GTV definition: summary