Quality of DSA Images and the Degree of Stenosis Depicted
| Quality of DSA Images | No. of Arteries by Degree of Stenosis | ||
|---|---|---|---|
| <70% or 100% | 70–99%* | Total (n = 102) | |
| Good | 9 (12.5) | 63 (87.5) | 72 (100) |
| Moderate | 5 (21.7) | 18 (78.3) | 23 (100) |
| Inferior | 2 (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).