Fig. 1From: The correlation between patent foramen ovale and brain ischemia in plateau residentsExample of a case with PFO and one brain ischemic lesion. One Tibetan male patient with age 32Â years, is a resident in an area over 3200Â m above sea level with a long-term headache symptom. Left panel, brain MRI shows high-intensity signal by a coronal section on FLAIR. Right panel: echocardiography imaging of the heart. Arrow points to PFO with a diameter of 3.4Â mmBack to article page