Fig. 3From: Short-term results of percutaneous closure of a patent foramen ovale guided by transoesophageal echocardiography in patients with cryptogenic stroke: a retrospective studyPositive transthoracic UFT result after PFO occlusion. There are more than 25 microbubbles in the LA and LV. LV left ventricular, RA right atrial, LA left atrial, PFO patent foramen ovale, UFT ultrasound foaming testBack to article page