Bilateral carotid artery ligation has been reported as a lifesaving procedure to control severe hemorrhage. However, reports are sparse and little information is available regarding the potential risks associated with this procedure. We report an ischemic brain infarct as a complication after vascular surgery. A 3-year old, male intact border collie was presented for acute onset of forebrain signs 5 days after bilateral carotid artery ligation. Multimodal brain MRI including morphologic sequences, MR angiography, diffusion- and perfusion-weighted images were performed. MRI revealed a well-defined intra-axial lesion of the left caudate nucleus, with increased T2 and decreased T1 signal intensity and moderate heterogeneous peripheral contrast enhancement. The cerebral blood flow was reduced relative to the contralateral caudate nucleus. Images were consistent with a subacute lacunar ischemic infarct of the left striate artery. Additionally, multiple arterio-arterial anastomosis arising from the vertebral arteries were visible in the angiography sequences. Ischemic infarct due to thromboembolism should be considered as a possible complication associated with bilateral carotid artery ligation. Collateral blood supply can develop as early as 5 days after surgery.

据报道，双侧颈动脉结扎是一种控制严重出血的挽救生命的方法。但是，报告稀疏，几乎没有与该过程相关的潜在风险的信息。我们报告缺血性脑梗塞是血管手术后的并发症。结扎双侧颈动脉5天后，出现了3岁的雄性完整边境牧羊犬，用于急性前脑体征。进行了包括形态序列，MR血管造影，弥散和灌注加权图像在内的多模式脑MRI。MRI显示左尾状核有明确的轴内病变，T2增高，T1信号强度降低，周围异质性对比增强。相对于对侧尾状核，脑血流量减少。影像与左纹状体亚急性腔隙性脑梗死相符。另外，在血管造影术序列中可见由椎动脉引起的多发性动​​脉-动脉吻合。血栓栓塞引起的缺血性梗死应被视为与双侧颈动脉结扎相关的可能并发症。最早在手术后5天就可以产生侧支血供。