Correlation between US-PSV and 64-Row MDCTA with Advanced Vessel Analysis in the Quantification of 50–70% Carotid Artery Stenosis

Table 1

Hemodynamic parameters described by Strandness [15] for duplex assesment of internal carotid artery stenosis.

Percent stenosis			Strandness criteria
Normal	PSV < 125 cm/sec		No spectral broadening	End-systolic bulb flow reversal
1–15	PSV < 125 cm/sec		No or minimal spectral broadening	No end-systolic bulb flow reversal
16–49	PSV < 125 cm/sec		Marked spectral broadening
50–79	PSV > 125 cm/sec	EDV < 140 cm/sec
80–99	PSV > 125 cm/sec	EDV > 140 cm/sec