Fig. 2

Comparative analysis of the diffusion tensor imaging along the perivascular space (DTI-ALPS) index by gestational age and sex (a) Preterm neonates exhibited lower DTI-ALPS indices compared to term neonates, even after adjusting for postmenstrual age (PMA) at MRI scan and sex. (b) No significant sex-based differences in the DTI-ALPS indices among neonates. The double asterisks (**) indicated a statistically significant difference (P < 0.01) between the two groups