WMH是脑mri扫描中经常看到的老年人脑白质病变区域。
WMH are diseased areas of the white matter seen commonly in brain MRI scans in the elderly.
目的探讨磁化传递成像（MTI）方法及其在判断脑部多发性硬化患者正常表现脑白质内微观病变中的价值。
Objective To explore the value of magnetization transfer imaging (MTI) in judging microscopic lesions in normal appearing white matter of multiple sclerosis (MS).
PM L病变见于脑和小脑的白质和皮质-白质交界处。
PML lesions are found in white matter and at the corticomedullary junction of cerebral and cerebellar cortex.
目的研究脑白质病变与动脉粥样硬化的关系。
Objective To investigate the correlation between leukoencephalopathy and atherosclerosis.
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.
MR影像显示双侧大脑半球多发、散在的病变，Flair序列上高信号，主要累及深部白质、右侧小脑中脚、脑桥。
MR imaging showed multiple, scattered, FLAIR hyperintense foci in bilateral cerebral hemispheres involving deep white matter, right middle cerebellar peduncle, and pons.
MR影像显示双侧大脑半球多发、散在的病变，Flair序列上高信号，主要累及深部白质、右侧小脑中脚、脑桥。
MR imaging showed multiple, scattered, FLAIR hyperintense foci in bilateral cerebral hemispheres involving deep white matter, right middle cerebellar peduncle, and pons.
应用推荐