Son Seungnam, Choi Dae Seob, Choi Nack-Cheon, Lim Byeong Hoon
Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea.
J Korean Neurosurg Soc. 2011 Oct;50(4):388-91. doi: 10.3340/jkns.2011.50.4.388. Epub 2011 Oct 31.
A lesion that is hyperintense on diffusion-weighted imaging (DWI) and hypointense on the apparent diffusion coefficient (ADC) map is a characteristic magnetic resonance imaging (MRI) finding in acute ischemic infarction. In some cases, however, these findings can persist for a few months after infarct onset. It is thought that these finding reflect the different evolution speeds of the infarcted tissue. We report a patient with a right middle cerebral artery territory infarction with persistent hyperintensity on DWI and hypointensity on the ADC map for over 8 months. To our knowledge, this is the most persistent case of hyperintensity lesion on DWI and the serial MRI images of this patient provide important information on the evolution of infarcted tissue.
在扩散加权成像（DWI）上呈高信号且在表观扩散系数（ADC）图上呈低信号的病变是急性缺血性梗死的特征性磁共振成像（MRI）表现。然而，在某些情况下，这些表现可在梗死发生后持续数月。据认为，这些表现反映了梗死组织的不同演变速度。我们报告了1例右侧大脑中动脉供血区梗死患者，其DWI上持续高信号且ADC图上持续低信号超过8个月。据我们所知，这是DWI上高信号病变持续时间最长的病例，该患者的系列MRI图像为梗死组织的演变提供了重要信息。
