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
  122395	Necrotic-Lipidic Plaque	Area within the plaque with very low echogenicity separated from the lumen and surrounded by more echogenic structures (fibrous cap). Highly lipidic necrotic region with remnants of foam cells and dead lymphocytes present. No collagen fibers are visible and mechanical integrity is poor. Cholesterol clefts and micro calcifications are visible.
  122394	Fibro-Lipidic Plaque	Loosely packed bundles of collagen fibers with regions of lipid deposition present. Region is cellular and no cholesterol clefts or necrosis are present. Somemacrophage infiltration. Increase in extra cellular matrix.

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

  Code	Display
  67170007	Lumen of artery
  237897009	Vascular Calcification
  396339007	Thrombus
  414165007	External Elastic Membrane
  40772000	Fibrous Plaque