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目的:分析脑动静脉畸形(arteriovenous malformations,AVM)的三维时间飞越法磁共振血管造影(3D-Time of Flight Magnetic Resonance Angiography, 3D-TOF MRA) 结合多层重叠薄块(multiple overlapping thin slab acquisition,MOTSA)和最佳倾斜非饱和激发(tilted optimized nonsaturating excitation ,TONE) 技术的磁共振成像表现, 探讨其