Fig. 7From: Settings and artefacts relevant for Doppler ultrasound in large vessel vasculitisColour priority/threshold. A low colour priority allows valid GS information to override Doppler information and a high colour priority allows Doppler information to override GS information. In the carotid artery the low colour priority results in poor filling of the vessel lumen (top) and should therefore be set high (bottom)Back to article page