Fitzek C, Tintera J, Müller-Forell W, Urban P, Thömke F, Fitzek S, Hopf H C, Stoeter P
Department of Neuroradiology, University Hospital, Mainz, Germany.
Neuroradiology. 1998 Dec;40(12):778-82. doi: 10.1007/s002340050683.
We performed MRI, including diffusion-weighted imaging, in 15 patients with recurrent strokes with acute ischaemia and at least one old lesion according to the clinical history and/or CT. Routine MRI showed similar signal intensity changes in both situations. Diffusion-weighted images, however, were positive in all acute or subacute infarcts. The high signal of acutely disturbed diffusion due to intracellular oedema could also be identified in small brain stem lesions. Spatial resolution was increased by applying separate gradients in each axis instead of creating anisotropy-independent trace images.
我们对15例复发性中风患者进行了磁共振成像（MRI）检查，包括弥散加权成像。这些患者有急性缺血症状，根据临床病史和/或CT检查显示至少有一处陈旧性病灶。常规MRI在两种情况下均显示出相似的信号强度变化。然而，弥散加权图像在所有急性或亚急性梗死灶中均呈阳性。在脑干小病灶中也可识别出由于细胞内水肿导致的急性弥散障碍的高信号。通过在每个轴向上应用单独的梯度而非创建与各向异性无关的迹图像，提高了空间分辨率。
