Clinical characteristics and MRI angle measurements and assessments
| Group 1 (n = 16) | Group 2 (n = 32) | P Valuea | |
|---|---|---|---|
| Gestational age (mean) (wk) | 35.6 ± 4.2 | 37.3 ± 4.5 | .1b |
| Postmenstrual age at MRI (mean) (wk) | 37.6 ± 4.8 | 39.8 ± 6.5 | .2b |
| Vermis height (mean) (mm) | 20.5 ± 4.4 | 23.7 ± 3.9 | .01be |
| Transcerebellar diameter (mean) | |||
| Axial | 48.6 ± 9.1 | 52.3 ± 9.8 | .2b |
| Coronal | 48.8 ± 9.6 | 52.7 ± 9.7 | .2b |
| Cranial base angle (mean) | 130.3° ± 4.0° | 134.8° ± 5.3° | .005ce |
| Tentorial angle (mean) | 55.4° ± 3.4° | 46.6° ± 5.8° | <.001ce |
| Infratentorial angle (mean) | 52.2° ± 6.5° | 47.7° ± 4.0° | .001be |
| Intraventricular hemorrhage (No.) (%) | 8 (47) | 0 (0) | <.001de |
| Cerebellar abnormality (No.) (%) | 9 (56) | 0 (0) | <.001de |
| Hemorrhagic lesion | 6 (67) | ||
| Hemorrhagic-cystic lesion | 3 (33) | ||
| Enlarged extracerebral space (No.) (%) | 13 (81) | 0 (0) | <.001de |
| Mild | 10 (77) | ||
| Severe | 3 (23) | ||
| Delayed cortical gyrification (No.) (%) | 12 (75) | 0 (0) | <.001de |
| WMI after cerebral hemorrhage (No.) (%) | 9 (56) | 0 (0) | <.001de |
| Punctate white matter lesion | 7 (78) | ||
| Cystic lesion | 2 (22) | ||
| Abnormality in DWI (n = 12) (No.) (%) | 7 (58) | - | |
| Focal restriction | 6 (86) | ||
| Extensive restriction | 1 (14) | ||
| Corpus callosum abnormality (No.) (%) | 4 (25) | 0 (0) | <.001de |
| Vertical appearance | 3 (75) | ||
| Hypoplasia | 1 (25) |