Weiss K L, Macura K J, Ahmed A
Department of Radiology, The Medical College of Georgia, Augusta, GA, USA.
J Stroke Cerebrovasc Dis. 1998 May-Jun;7(3):222-6. doi: 10.1016/s1052-3057(98)80012-8.
Iatrogenic cerebral air embolism secondary to right subclavian vein recatheterization was imaged acutely by computed tomography (CT) and magnetic resonance imaging (MRI). However, CT showed intravascular air with misleadingly high attenuation values sampled to a minimum of -39 HU. Diffusion-weighted imaging, not previously reported in this setting, clearly showed hyperintense acute infarctions in corresponding vascular territories 8.5 hours postprocedure (less than 6 hours after referable symptomatology noted), whereas T2-weighted fluid-attenuated inversion recovery and turbo gradient spin echo images did not. The combination of CT and diffusion-weighted MRI appears ideal for evaluating suspected cerebral air embolism in the acute setting.
因右锁骨下静脉重新置管继发的医源性脑空气栓塞通过计算机断层扫描（CT）和磁共振成像（MRI）进行了急性成像。然而，CT显示血管内空气的衰减值高得具有误导性，最低采样至-39 HU。在这种情况下以前未报告过的扩散加权成像清晰地显示了术后8.5小时（在出现相关症状后不到6小时）相应血管区域的高强度急性梗死灶，而T2加权液体衰减反转恢复序列和快速梯度自旋回波图像则未显示。CT和扩散加权MRI相结合似乎是评估急性情况下疑似脑空气栓塞的理想方法。
