Radiologic findings: separated into groups based on the postmenstrual age at scanninga
| 27–29 Weeks (n = 24) (No.) (%) | 30–33 Weeks (n = 99) (No.) (%) | 34–36 Weeks (n = 34) (No.) (%) | 37–41 Weeks (n = 101) (No.) (%) | |
|---|---|---|---|---|
| WMI (moderate/severe)b | 6 (25%) | 15 (15%) | 4 (12%) | 12 (12%) |
| IVH (grade 1/2)c | 10 (42%) | 40 (40%) | 18 (53%) | 33 (33%) |
| IVH (grade 3/4)c | 1 (4%) | 2 (2%) | 1 (3%) | 2 (2%) |
| Cerebellar hemorrhage | 2 (8%) | 11 (11%) | 5 (15%) | 12 (12%) |
Note:—WMI indicates white matter injury.
↵a One hundred eighty neonates participated. Seventy-five neonates had early scans (near birth), 78 neonates were scanned early and late (birth, term-equivalent age), and 27 neonates were scanned late, for a total of 258 scans.
↵b WMI defined as foci exhibiting T1 hyperintensity without T2 hypointensity or by low-intensity T1 foci.
↵c IVH was graded (none = 0, mild = 1–2, and moderate-severe = 3–4) using the Papile system.