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Abstract #1645

Posterior collateral circulation and bypassing perfusion changes after revascularization in Moyamoya disease patients

Chuanying Shi1, Weidong Liu2, Chuanchen Zhang1, Jiheng Hao2, Weiqiang Dou3, Jipeng Wang1, and Jixin Luan1
1Radiology, Liaocheng people's hospital, Liaocheng, China, 2Neurosurgery department, Liaocheng people's hospital, Liaocheng, China, 3MR Research China, GE Healthcare, Beijing, China

In patients with Moyamoya disease, posterior collateral circulation plays an important role in defending ischemic syndrome and good revascularization outcome. The association between bypassing perfusion and posterior collateral circulation remains unknown. This study thus used territory arterial spin labeling to evaluate the territory changes of these vessels. Our results showed that good bypassing perfusion is along with the improvement of posterior collateral perfusion territory. This indicates that good operation outcome was not only associated with poor collateral perfusion, but also related with good collateral vessels functioning as blood channels.

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