Key features of the 7 subtypes of partial prolonged/watershed HIBI
| Lobe/Structure | Features | Subtype 1 | Subtype 2 | Subtype 3 | Subtype 4 | Subtype 5 | Subtype 6 | Subtype 7 | Overall |
|---|---|---|---|---|---|---|---|---|---|
| Anterior (n = 10) | Peri-Sylvian (n = 1) | Posterior (n = 1) | Anterior + Peri-Sylvian (n = 6) | Peri-Sylvian + Posterior (n = 15) | Anterior + Posterior (n = 7) | All 3 Zones (n = 59) | (n = 99) | ||
| Thalamic injury location (No.) (%) | Nil | 1 (16.7) | 3 (30.0) | 4 (4.0) | |||||
| Atypical | 2 (33.3) | 7 (70.0) | 1 (14.3) | 10 (10.1) | |||||
| Thalamus L-sign | 1 (100.0) | 1 (100.0) | 3 (50.0) | 15 (100.0) | 6 (85.7) | 59 (100.0) | 85 (85.9) | ||
| Thalamus score (No.) (%) | Not/less involved | 1 (100.0) | 1 (100.0) | 6 (100.0) | 14 (93.9) | 10 (100.0) | 6 (85.7) | 53 (89.8) | 91 (91.9) |
| Markedly destroyed | 1 (6.7) | 1 (14.3) | 6 (10.2) | 8 (8.1) | |||||
| Parietal (No.) (%) | Not involved | 3 (50.0) | 6 (60.0) | 1 (14.3) | 10 (10.1) | ||||
| Involved | 1 (100.0) | 1 (100.0) | 3 (50.0) | 15 (100.0) | 4 (40.0) | 6 (85.7) | 59 (100.0) | 89 (89.9) | |
| Occipital (No.) (%) | Not involved | 1 (100.0) | 7 (70.0) | 8 (8.1) | |||||
| Involved | 1 (100.0) | 6 (100.0) | 15 (100.0) | 3 (30.0) | 7 (100.0) | 59 (100.0) | 91 (91.9) | ||
| Frontal (No.) (%) | Not involved | 1 (100.0) | 8 (53.3) | 1 (10.0) | 1 (1.7) | 11 (11.1) | |||
| Involved | 1 (100.0) | 6 (100.0) | 7 (46.7) | 9 (90.0) | 7 (100.0) | 58 (98.3) | 88 (88.9) | ||
| Temporal (No.) (%) | Not involved | 3 (20.0) | 6 (60.0) | 3 (42.9) | 3 (5.1) | 15 (15.2) | |||
| Involved | 1 (100.0) | 1 (100.0) | 6 (100.0) | 12 (80.0) | 4 (40.0) | 4 (57.1) | 56 (94.9) | 84 (84.8) | |
| Cerebellum (No.) (%) | Not involved | 1 (100.0) | 4 (66.7) | 10 (66.7) | 7 (70.0) | 5 (71.4) | 40 (67.8) | 67 (67.7) | |
| Involved | 1 (100.0) | 2 (33.3) | 5 (33.3) | 3 (30.0) | 2 (28.6) | 19 (32.2) | 32 (32.3) | ||
| Brainstem (No.) (%) | Not involved | 1 (100.0) | 1 (100.0) | 6 (100.0) | 14 (93.3) | 10 (100.0) | 7 (100.0) | 49 (83.1) | 88 (88.9) |
| Involved | 1 (6.7) | 10 (16.9) | 11 (11.1) |