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TABLE 4: 
Quality of DSA Images and the Degree of Stenosis Depicted
Quality of DSA ImagesNo. of Arteries by Degree of Stenosis
<70% or 100%70–99%*Total (n = 102)
Good9 (12.5)63 (87.5)72 (100)
Moderate5 (21.7)18 (78.3)23 (100)
Inferior2 (28.6)5 (71.4)7 (100)
  • Note.— All 102 carotid arteries in the table were recognized as flow voids at MRA. Data in parentheses are percentages.
  • * Not significant linear-by-linear association (P = .15, χ2 test).