Evaluation of right-to-left shunt on contrast-enhanced transcranial Doppler in patent foramen ovale-related cryptogenic stroke: Research based on imaging

Figure 4 Diffusion-weighted imaging lesions of different grades of shunt in permanent and latent right-to-left shunt groups. A: Infarction pattern of permanent-small, permanent-mild and permanent-large right-to-left shunt (RLS). Multiple, small and cortical lesions were more likely to be involved as the grade of shunt increased in the permanent RLS group; B: Infarction pattern of latent-small, latent-mild and latent-large RLS. Multiple, small and cortical lesions were more likely to be involved as the grade of shunt increased in the latent RLS group. ^aP < 0.05.