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Figure 2: Grayscale IVUS image
These grayscale images can then be enhanced using VH IVUS.
VH analysis provides automatic border detection for the vessel and lumen borders, as
well as plaque composition. Plaque is automatically classified into four categories in
order to simplify interpretation of the IVUS image:
FI Fibrous (green)
FF Fibro-Fatty (light green)
NC Necrotic Core (red)
DC Dense Calcium (white)
IVUS Transducer
Lumen Border
Vessel Border