195 / 1031
Take home messages
•
GTV is tumour you can
See ‐ Feel – Image
O tli
h t
!
•
u ne w a you see
/
•
CTV ‐ contains GTV and or sub‐clinical disease
•
Tumour
cannot
be seen or imaged
C b i di id li d
•
an e n v ua se to anatomy
•
PTV is a geometric volume
•
Ensures prescription dose is delivered to the CTV
I l d
i
d
•
nc u es systemat c + ran om error components