This value set includes codes based on the following rules:

• Include these codes as defined in http://dicom.nema.org/resources/ontology/DCM

  Code	Display	Definition
  130050	CTV Primary	Clinical Target Volume encompassing primary tumor(s) , with margin to include surrounding sub-clinical disease as defined in .
  130054	PTV Primary	Planning Target Volume encompassing a primary CTV, with margin to account for uncertainty in patient positioning and organ motion as defined in .
  130053	PTV Nodal	Planning Target Volume encompassing a nodal CTV, with margin to account for uncertainty in patient positioning and organ motion as defined in .
  130064	Radiation Dose Reference Point	A point at which the radiation dose is observed.
  130052	GTV Primary	Gross Tumor Volume encompassing primary tumor(s) as defined in .
  130063	Radiation Dose Normalization Point	A point for which a specific radiation dose value is chosen. The rest of the radiation dose distribution is normalized against" this value.
  130051	GTV Nodal	Gross Tumor Volume encompassing diseased lymph nodes as defined in .
  130056	ITV	Internal Target Volume encompassing the CTV, with margin to account for internal motion, often delineated using multiple images, e.g., acquired over a breathing cycle, cardiac cycle, etc, as defined in .
  130055	Entire Body Target Volume	Entire Body as a target volume for radiotherapy treatment. The usual term for a treatment technique irradiating this target is Full Body Irradiation.
  130049	CTV Nodal	Clinical Target Volume encompassing diseased lymph node(s) , with margin to include surrounding sub-clinical disease as defined in .
  130059	Treated Volume	Volume enclosed by an isodose surface appropriate to achieve the purpose of treatment (e.g., tumor eradication or palliation) as defined in .

• Include these codes as defined in http://snomed.info/sct

  Code	Display
  228790005	Irradiated Volume
  228791009	GTV
  228793007	PTV
  228792002	CTV