Table 3. Characteristics of MCA Plaque According to Infarction Patterns.
| SC-I | LS-I | P | ||||
|---|---|---|---|---|---|---|
| Acute + Chronic Infarction (n = 81) | Acute Infarction (n = 43) | Acute + Chronic Infarction (n = 64) | Acute Infarction (n = 32) | Acute + Chronic Infarction | Acute Infarction | |
| Degree of stenosis, n (%) | 0.040* | 0.028* | ||||
| None | 18 (22.2) | 11 (25.6) | 23 (35.9) | 18 (56.3) | - | - |
| Mild | 28 (34.6) | 15 (34.9) | 28 (43.8) | 11 (34.4) | - | - |
| Moderate to severe | 35 (43.2) | 17 (39.5) | 13 (20.3) | 3 (9.4) | - | - |
| Presence, n (%) | 72 (88.9) | 38 (88.4) | 48 (75.0) | 21 (65.6) | 0.028* | 0.023* |
| Eccentricity, n (%) | 10 (13.9) | 3 (7.9) | 6 (12.5) | 1 (4.8) | 0.571 | 0.632 |
| Location, n (%) | ||||||
| Antero-superior | 24 (33.3) | 12 (31.6) | 10 (20.8) | 4 (19.0) | 0.050 | 0.155 |
| Superior | 15 (20.8) | 8 (21.1) | 10 (20.8) | 3 (14.3) | 0.647 | 0.335 |
| Postero-superior | 12 (16.7) | 6 (15.8) | 6 (12.5) | 2 (9.5) | 0.324 | 0.454 |
| Antero-inferior | 27 (37.5) | 17 (44.7) | 12 (25.0) | 6 (28.6) | 0.050 | 0.054 |
| Inferior | 20 (27.8) | 14 (36.8) | 9 (18.8) | 6 (28.6) | 0.112 | 0.181 |
| Postero-inferior | 18 (25.0) | 9 (23.7) | 6 (12.5) | 3 (14.3) | 0.050 | 0.216 |
| Plaque extent (mean ± SD, no. of distributed divisions) | 3.74 ± 1.78 | 3.65 ± 1.81 | 2.67 ± 1.98 | 2.31 ± 2.07 | 0.001* | 0.005* |
| Plaque on the LSA origin, n (%) | 19 (26.4) | 12 (31.6) | 12 (25.0) | 6 (28.6) | 0.492 | 0.358 |
| Intraplaque T2-HSI, n (%) | 38 (52.8) | 21 (55.3) | 13 (27.1) | 6 (28.6) | 0.001* | 0.007* |
| Plaque enhancement, n (%) | 52 (72.2) | 32 (84.2) | 25 (52.1) | 11 (52.4) | 0.002* | 0.001* |
*p < 0.05. LSA = lenticulostriate artery, MCA = middle cerebral artery, T2-HSI = T2-high signal intensity