Imon Y, Yamaguchi S, Katayama S, Oka M, Murata Y, Kajima T, Yamamura Y, Nakamura S
Department of Geriatrics, Tokyo Medical College, Japan.
Neuroradiology. 1998 Feb;40(2):76-80. doi: 10.1007/s002340050544.
To determine the change in intensity in the cerebral cortex on T2-weighted MRI with ageing, we reviewed the T2-weighted images of 83 normal subjects and measured the signal intensity in the cerebral cortex in 30 subjects randomly selected from them. Low-intensity areas were more common in the cerebral cortex of the aged. The intensity of different cortical regions varied, and the intensity in the temporal and parietal to be decreased with ageing. Presumably, this change of the intensity reflects senile changes, although low intensity is not evident in the temporal cortex because of its high basal intensity level.
为了确定随着年龄增长，T2加权磁共振成像（MRI）中大脑皮质的信号强度变化，我们回顾了83名正常受试者的T2加权图像，并对其中随机选取的30名受试者的大脑皮质信号强度进行了测量。低强度区域在老年人的大脑皮质中更为常见。不同皮质区域的信号强度各不相同，颞叶和顶叶的信号强度会随着年龄增长而降低。据推测，这种信号强度的变化反映了衰老变化，尽管由于颞叶皮质的基础信号强度较高，其低强度变化并不明显。
