![Show Menu](styles/mobile-menu.png)
![Page Background](./../common/page-substrates/page0114.jpg)
Summary
•
GTV is tumour you can
See - Feel – Image
Outline what you see !
•
CTV - contains GTV and/or sub-clinical disease
Tumour
cannot
be seen or imaged
Can be individualised to anatomy
•
PTV is a geometric volume
Ensures prescription dose is delivered to the CTV
Includes systematic + random error components