TABLE 3:

Categorized degree of stenosis on DUS and DSA. All 98 carotid arteries in this table were recognized as flow voids on MRA

Categories of Stenosis at DUS	Categories of Stenosis at DSA
	0–49%	50–69%	70–99%	100%	Total
0–49%	0	0	0	0	0
50–69%	0	1	2	0	3
70–99%	3	10	79	1	93
100%	0	0	1	1	2
Total	3	11	82	2	98