Table 2.
Comparison of vascular wall characteristics and perfusion parameters between the TIA group and AIS group.
| TIA group (n = 65) | AIS group (n = 47) | x2/t/Z | p | |
|---|---|---|---|---|
| IPH (n/%) | 22/ 33.8 | 15/ 31.9 | 0.046a | 0.830 |
| SQI | 1.36 ± 0.41 | 1.55 ± 0.46 | −2.268b | 0.025* |
| ER | 0.63 ± 0.51 | 0.85 ± 0.54 | −2.215b | 0.029* |
| Enhancement grade (n/%) | 5.874a | 0.053 | ||
| 0 | 12/ 18.5 | 2/ 4.3 | ||
| 1 | 45/ 69.2 | 35/ 74.5 | ||
| 2 | 8/ 12.3 | 10/ 21.3 | ||
| WA | 4.67 (3.46, 6.87) | 5.23 (3.00, 6.92) | −0.024c | 0.981 |
| NWI | 0.84 (0.74, 0.91) | 0.83 (0.54, 0.93) | −0.027c | 0.979 |
| Remodeling mode (n/%) | 0.700a | 0.403 | ||
| PR Non-PR |
28/ 43.1 37/ 56.9 |
24/ 51.1 23/ 48.9 |
||
| Stenosis rate | 0.73 (0.45, 0.88) | 0.74 (0.46, 0.92) | 0.027c | 0.979 |
| Perfusion of lesion area | ||||
| rCBF | 39.59 (25.02, 51.16) | 30.62 (12.06, 43.68) | −1.630c | 0.103 |
| rCBV | 436.83 (296.66, 552.53) | 403.96 (194.73, 653.36) | −0.345c | 0.730 |
| MTT (s) | 11.10 (8.99, 15. 52) | 15.20 (10.18, 19.96) | −2.792c | 0.005* |
| TPP (s) | 25.19 (21.92, 28.85) | 28.49 (25.93, 34.79) | −3.381c | 0.001* |
a, x2 value; b, t value; c, Z value; *, the difference was statistically significant.
IPH, intraplaque hemorrhage; SQI, standardized plaque index; ER, enhancement ratio; WA, wall area; NWI, normative wall index; RI, remodeling index; rCBF, relative cerebral blood flow; rCBV, relative cerebral blood volume; MTT, mean transit time; TPP, time to peak.