My mother, 84, MRI scan> subacute infarcts, bilateral frontal lobes, small vessel ischematic changes inthe basal ganglia, periventricular white matter?

Small vessel disease. Mri in a 84 years old lady showing infarcts and small vessel disease means she is having ministrokes. That is very common in that age group. If she has heart disease or carotid artery disease or risk factors like high BP or diabetes or high lipids they should be controlled and she should follow up with her dr who can give her further recommendations.