COVID-19(14) Patient(7) stroke(5) SARS-COV-2 infection(5) Symptom(5) epilepsy(4) pathophysiology(4) Central nervous system(4) syndrome(4) coronavirus(4) Region(4) multiple sclerosis(3) Neuroimaging(3) post-COVID syndrome.(3) Volume(3) sequence(3) performed(3) Test(3) COVID(3) analysis(3) MRI(3) therapy(3) acute infection(3) persistent(3) identification(3) tissue perfusion(3) varicella zoster.(3) Brain mapping(3) reduced(3) olfactory dysfunction(3)