目的：经导管封堵卵圆孔未闭（PFO）预防脑的矛盾栓塞并评价其疗效。
Objective:To evaluate the feasibility of transcatheter closure of patent foramen ovale(PFO)to prevent paradoxical embolism with Amplatzer occluder device.
大量的研究结果证实伴卵圆孔未闭者发生隐性脑卒中的机率及复发率明显高于正常人群。
Most studies have confirmed that the incidence and recurrence of cryptogenic stroke in patients with PFO is markedly higher than in the normal population.
目的是用来研究，对于遭受过不明撞击并且是卵圆孔未闭的患者来说，是否骨盆腔静脉是造成溶血栓栓赛物的原因。
The objective is to determine, via MRV, whether the pelvic veins are the source of thrombolytic emboli in cryptogenic stroke patients who also harbor a patent foramen ovale.
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