图1：轴位的平扫ct显示对称性的低密度影在颞枕叶脑白质区，需要注意的是病变累及胼胝体的压部。
Figure 1: Axial non contrast CT demonstrates symmetric low attenuation in the temporal-parietal white matter. Note involvement of the splenium of the corpus callosum (red arrows).
影像学特点为双侧、对称性后部脑白质较大范围的病变。
The imaging findings are bilateral symmetry cortical and subcortical edema in the posterior areas of the brain.
PMD中不会有异常的强化，相反其他的脱髓鞘病变如肾上腺脑白质营养不良症其外周活动性的脱髓鞘病变可以强化。
Abnormal enhancement is not seen in PMD as opposed to some demyelinating disorders such as adrenal leukodystrophy in which enhancement is seen at the periphery of the active demyelination.
PMD中不会有异常的强化，相反其他的脱髓鞘病变如肾上腺脑白质营养不良症其外周活动性的脱髓鞘病变可以强化。
Abnormal enhancement is not seen in PMD as opposed to some demyelinating disorders such as adrenal leukodystrophy in which enhancement is seen at the periphery of the active demyelination.
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