On T2 weighted image, white matter showed hyperintense, the myelinated region and the cortex presented hypointense. Good signal contrast was seen between the white matter and cerebral cortes in all neonates.

• T_2加权成像,脑白质为较高信号,灰质和髓鞘化区域呈明显的低信号,全组新生儿的灰白质对比均清晰明显;