Figure 1

MR images of 2 full-term neonates with pattern A. In the first patient (a–d), the subpial hemorrhage shows hepointense on T2WI (a), hyperintense on T1WI (b), no restricted diffusion (c), and hypointense signal on SWI (d). The combination of a dark or bright subpial hemorrhage collection and the normal underlying cerebral cortex forms a yin-yang symbol (a–b). In the second patient (e–g), the subpial hemorrhage shows hyperintense on T1WI and T2WI, with restricted diffusion (g). On T2WI (e), we found a thin layer of additional hypointense fluid in the deep aspect between hemorrhage and the cortex (arrowhead), the presence of a bright subpial bleed, a dark, thin layer of fluid and an underlying normal cortex-created sandwich sign. The first patient received MRI examination after 3 months; The subpial hemorrhage was completely absorbed and the cerebral sulcus fissure widened (h).