Course book Advanced Treatment Planning 2018

Target volumes – PRV

• The use of a PRV around an Organ at Risk is relevant for OARs whose damage is especially dangerous

• This applies to organs where loss of a small amount of tissue would produce a severe clinical manifestation

• A PRV is relevant for an OAR with serial organisation (almost exclusively) • Spinal cord • Brain stem • Optic pathway

• A PRV is not the same as a plan optimising volume