Komiyama M, Nishikawa M, Yasui T
Department of Neurosurgery, Osaka City General Hospital, Japan.
Neuroradiology. 1997 Jul;39(7):474-9. doi: 10.1007/s002340050448.
We studied the MRI characteristics of cortical laminar necrosis in ischaemic stroke. We reviewed 13 patients with cortical laminar high signal on T1-weighted images to analyse the chronological changes in signal intensity and contrast enhancement. High-density cortical lesions began to appear on T1-weighted images about 2 weeks after the ictus. At 1-2 months they were prominent. They began to fade from 3 months but could be seen up to 11 months. These cortical lesions showed isointensity or high intensity on T2-weighted images and did not show low intensity at any stage. Contrast enhancement of the laminar lesions was prominent at 1-2 months and became less apparent from 3 months, but could be seen up to 8 months.
我们研究了缺血性脑卒中皮质层状坏死的磁共振成像（MRI）特征。我们回顾了13例在T1加权图像上出现皮质层状高信号的患者，以分析信号强度和对比增强的时间变化。高密度皮质病变在发病后约2周开始出现在T1加权图像上。在1至2个月时最为明显。它们从3个月开始逐渐消退，但可持续至11个月。这些皮质病变在T2加权图像上呈等强度或高强度，在任何阶段均未显示低强度。层状病变的对比增强在1至2个月时最为明显，从3个月开始变得不那么明显，但可持续至8个月。
