Plaque, perfusion, and RBANS test characteristicsa
| Parameter | Group (n = 23) | IPH(+) (n = 11) | IPH(–) (n = 12) | P |
|---|---|---|---|---|
| Ipsilateral plaque | ||||
| IPH | 11 (47.8) | 11 (100.0) | 0 (0.0) | – |
| Ulceration | 12 (52.2) | 8 (72.7) | 4 (33.3) | .06 |
| Max plaque thickness (mm) | 5.4 (SD, 1.6) | 6 (SD, 1.9) | 4.8 (SD, 1.1) | .08 |
| NASCET (%) | 68.0 (SD, 18.9) | 65.1 (SD, 23.8) | 70.7 (SD, 13.5) | .49 |
| Intraluminal thrombus | 3 (13.0) | 1 (9.1) | 2 (16.7) | 1.00 |
| Contralateral plaque | ||||
| Contra-IPH | 6 (26.1) | 3 (27.3) | 3 (25.0) | 1.00 |
| Contra-ulceration | 12 (52.2) | 6 (54.6) | 6 (50.0) | .83 |
| Contra-max plaque thickness (mm) | 4.2 (SD, 1.7) | 4.4 (SD, 1.9) | 4.1 (SD, 1.4) | .69 |
| Contra-NASCET (%) | 34.3 (SD, 30.3) | 32.7 (SD, 31.4) | 35.2 (SD, 31.4) | .85 |
| Contra-intraluminal thrombus | 0 (0.0) | 0 (0.0) | 0 (0.0) | – |
| Carotid intervention | ||||
| Carotid endarterectomy | 20 (87.0) | 10 (90.9) | 10 (83.3) | .59 |
| Right-sided intervention | 14 (60.9) | 7 (63.6) | 4 (36.4) | 1.00 |
| Duration (min)b | 133.1 (SD, 33.6) | 132.2 (SD, 33.3) | 134.1 (SD, 36.0) | .90 |
| Perfusion | ||||
| Total CBF | 34.2 (SD, 7.7) | 31.5 (SD, 8.5) | 36.7 (SD, 6.4) | .11 |
| Total CBV | 4.8 (SD, 0.9) | 4.9 (SD, 1.1) | 4.8 (SD, 0.8) | .92 |
| Total MTT | 8.3 (SD, 1.7) | 9.0 (SD, 2.0) | 7.6 (SD, 1.2) | .049 |
| RBANS | ||||
| Education (yr) | 15.2 (SD, 2.7) | 14.8 (SD, 2.0) | 15.5 (SD, 3.2) | .55 |
| RBANS-1 ,≤ 80 baseline | 6 (26.1) | 1 (9.1) | 5 (41.7) | .16 |
| RBANS-1, preintervention (days) | 28.5 (SD, 23.5) | 33 (SD, 18.8) | 24.3 (SD, 27.2) | .39 |
| Intervention to RBANS-2 (days) | 212.0 (SD, 255.3) | 223.1 (SD, 249.5) | 201.9 (SD, 250.0) | .84 |
| RBANS-1 time to RBANS-2 (days) | 266.6 (SD, 258.1) | 243.9 (SD, 259.4) | 287.3 (SD, 266.7) | .70 |