The Current Role of Carotid Duplex Ultrasonography in the Management of Carotid Atherosclerosis: Foundations and Advances

Table 2

Carotid Consensus Panel criteria [20].

Carotid Consensus Panel criteria (2003)
Stenosis; (%)^a	PSV^b; (cm/s)	EDV^c; (cm/s)	ICA/CCA ratio
Normal (no plaque)	<125	<40	<2.0
<50 (plaque seen)	<125	<40	<2.0
50–69	125–230	40–100	2.0–4.0
≥70	≥230	>100	>4.0

^aBased on conventional angiography using least transverse diameter at the stenosis compared to the diameter of the distal uninvolved ICA where the arterial walls become parallel, ^bpeak systolic velocity, ^cend diastolic velocity.