Fig. 1
From: The correlation between patent foramen ovale and brain ischemia in plateau residents
Example of a case with PFO and one brain ischemic lesion. One Tibetan male patient with age 32 years, is a resident in an area over 3200 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 3.4 mm