TVD 2016

Target volumes • ICRU report 50 and supplement 62 (1993 + 1999) specified  definitions of different target volumes

• ICRU 62 was an update triggered by: i) increasing availability of conformal therapy where margins are more critical ii) need to describe normal tissues better

• ICRU 62 introduced the Planning organ at Risk Volume (PRV)

• ICRU 83 (2010) developed concepts for IMRT