The characteristics of intracranial artery dissection were firstly observed using three dimensional simultaneous non-contrast angiography and intra plaque hemorrhage (3D-SNAP) high-resolution magnetic resonance imaging, including intramural hematoma, double lumen and intimal flap. 43 patients were enrolled. The discovery rate of intramural hematoma, false lumen thrombosis were significantly higher in the intracranial artery dissection by 3D-SNAP than other MRI sequences. The discovery rate of double lumen and intimal flap using 3D-SNAP were minor superior to CE-T1WI sequences. The diagnosis efficiency of 3D-SNAP sequences was only lower CE-T1WI, it was the highest diagnostic efficacy in combination with 3D-SNAP and CE-T1WI sequences. Therefore, the application of 3D-SNAP would rise diagnosis rate of intracranial artery dissection, and it may become the first-line screening technology to evaluate the risk factors of stroke caused for intracranial artery dissection.
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