Incidence of Carotid Shunting During CEA According to Types of 99mTc-ECD ACZ-SPECT Findings and Severity of Contralateral ICA Stenosis
| SPECT findings | Contralateral ICA stenosis | Total | |
|---|---|---|---|
| <69% | 70%–100% | ||
| Type N/N | 1/17 (5.9) | 0/4 | 1/21 (4.8) |
| Type R/N | 2/20 (10.0) | 0/4 | 2/24 (8.3) |
| Type N/R | 3/7 (42.9) | 1/6 (16.7) | 4/13 (30.8) |
| Type R/R | 1/10 (10.0) | 6/7 (85.7) | 7/17 (41.2) |
| Total | 7/54 (13.0) | 7/21 (33.3) | 14/75 (18.7) |
Values in parentheses are percentages.