Institute of Clinical Radiology, University of Munich-Grosshadern Campus, Munich, Germany.
Clin Hemorheol Microcirc. 2010;44(1):19-25. doi: 10.3233/CH-2010-1247.
We describe the case of a 66-year-old woman with an aortic valve reconstruction. Subsequently she presented with an arteriovenous fistula (AVF) between the left common carotid artery and internal jugular vein following several attempts of jugular catheter insertion. Due to aliasing, correct visualization of the fistula track was hindered by conventional color Doppler. However, by using the B-flow imaging technique, the fistula track could be detected without aliasing or overwriting. Duplex examination revealed an AVF between both vessels with an arterialized waveform in the left jugular vein and a high-velocity turbulent flow inside the fistula. Due to these findings we will change our routine scanning protocol for extracranial vessels and will use B-flow in indistinctive or difficult conditions to obtain additional informations.
我们描述了一位 66 岁女性的主动脉瓣重建病例。随后，她在多次尝试插入颈内静脉导管后，出现了左侧颈总动脉和颈内静脉之间的动静脉瘘。由于存在混叠，传统彩色多普勒对瘘管轨迹的正确显示受到阻碍。然而，通过使用 B 型血流成像技术，没有混叠或覆盖的情况下可以检测到瘘管轨迹。双功能超声检查显示两条血管之间存在动静脉瘘，左颈内静脉呈动脉化波形，瘘内存在高速湍流。基于这些发现，我们将改变常规的颅外血管扫描方案，并在不明确或困难的情况下使用 B 型血流成像技术以获得更多信息。
