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
  113240	Source image diffusion b-value	The diffusion sensitization factor (b value) used during acquisition of the source image used for a diffusion model.
  113241	Model fitting method	The method used to fit a set of data to a mathematical model.
  121401	Derivation	Method of deriving or calculating a measured value.
  121071	Finding	An observation found on an imaging study.
  121050	Equivalent Meaning of Concept Name	A precoordinated coded concept or text meaning for the name component of a name-value pair that is equivalent to the post-coordinated meaning conveyed by the coded name and its concept modifier children.

• Include these codes as defined in http://ncit.nci.nih.gov

  Code	Display
  C94970	Reference Region

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

  Code	Display
  246205007	Quantity
  363698007	Finding Site
  370129005	Measurement Method