Basic Treatment Planning

Volumes

1978 ICRU29

“The Target Volume”

Organs at risk

1993 ICRU50

GTV

CTV

PTV

Organs at risk

1999 ICRU62

GTV

CTV ITV PTV

OR PRV

GTV-T GTV-N GTV-M

CTV-T (ITV) PTV-T

2004 ICRU71

CTV-N CTV-M

PTV-N PTV-M

OAR PRV

OAR PRV RVR

e.g. GTV-T (MR, 0 Gy) GTV-T (CT, 0 Gy)

2007 ICRU78 2010 ICRU83

CTV-T (MR, 0 Gy) (ITV) PTV-T (MR, 0 Gy)

PTV-T SV-1 (…) PTV-T SV-2 (…) PTV-T SV-3 (…)

CTV-T (CT, 0 Gy) PTV-T (CT, 0 Gy) GTV-T (PET, 16 Gy) CTV-T (PET, 16 Gy) PTV-T (PET, 16 Gy) GTV-TN (PET, 16 Gy) CTV-TN (PET, 16 Gy) PTV-TN (PET, 16 Gy) GTV-N (MR, 16 Gy) CTV-N (MR, 16 Gy) PTV-N (MR, 16 Gy) GTV-N (CT, 0 Gy) CTV-N (CT, 0 Gy) PTV-N (CT, 0 Gy)