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.

• 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。