This value set includes codes based on the following rules:

• Include these codes as defined in https://dicom.nema.org/medical/dicom

  Code	Display
  MR	Magnetic Resonance Imaging
  CT	Computed Tomography Scanner
  PT	Positron emission Tomography
  DX	Digital X Ray
  NM	Nuclear Medicine image

• Include these codes as defined in https://terminology.arkhn.com/SeriesModalityCS

  Code	Display
  RTSTRUCT	Radiotherapy Structure Set

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/umls

  Code	Display
  C0439673	Unknown