Course book Advanced Treatment Planning 2018
Target volumes - CTV
• Concept that the CTV contains all the sub-clinical disease with a certain probability ➢ Introduced in ICRU 83 (2010)
• No consensus as to what that probability is ➢
Probability of ~ 90-95% may be reasonable
➢
Should it be lower or higher?
➢
(i.e. don’t treat if probability <5% or 10%)
• Might depend on dose at edge of treated volume …
Made with FlippingBook - Online Brochure Maker