Clinical characteristics: separated into groups based on the postmenstrual age at scanninga
| 27–29 Weeks (n = 24) (Median) (IQR) or (No.) (%) | 30–33 Weeks (n = 99) (Median) (IQR) or (No.) (%) | 34–36 Weeks (n = 34) (Median) (IQR) or (No.) (%) | 37–41 Weeks (n = 101) (Median) (IQR) or (No.) (%) | |
|---|---|---|---|---|
| Birth GA (wks) | 27.3 (26.1–27.8) | 29.3 (27.5–30.6) | 26.1 (25–27.7) | 26.9 (25.9–29.7) |
| Age at MRI (wks) | 29 (28.5–29.4) | 32 (30.9–32.9) | 35.1 (34.5–36.3) | 39.7 (38.6–40.6) |
| Sex (male) | 12 (50%) | 57 (57%) | 16 (47%) | 54 (53%) |
| Birth weight (g) | 1022.5 (911.5–1171.3) | 1140 (957.5–1377.5) | 749 (607.5–1002.5) | 970 (805–1270) |
| Days of mechanical ventilation | 2 (1–5.8) | 3 (1–10.5) | 37.5 (20.5–51.3) | 11.5 (2–51) |
| Infectionb | 11 (46%) | 31 (31%) | 19 (56%) | 49 (49%) |
| Patent ductus arteriosus | 9 (38%) | 38 (38%) | 27 (79%) | 47 (47%) |
| Chronic lung disease | 5 (21%) | 10 (10%) | 17 (50%) | 27 (27%) |
Note:—GA indicates gestational age.
↵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 (term-equivalent age), for a total of 258 scans.
↵b Infection, culture-positive infection, confirmed necrotizing enterocolitis.