In an article in the american heart and stroke association enlarged perivascular spaces on MRI are a feature of cerebral small vessel disease. True?

Not necessarily. Generally, when one speaks about enlarged perivascular spaces, that is just what it is. A larger space around the vessels as they travel in the arachnoid space in the brain. These are often called virchow robin spaces and are normal variant. Sometimes, small vessel disease can lead to microinfarcts that lead to atrophy.This loss of volume can lead to the appearance of larger perivascular spaces.