Enlargement of Perivascular Spaces as a Downstream Consequence of Spaceflight Analog-Induced Alterations in Cerebral Venous Hemodynamics

We read with great interest the article by Tidwell and colleagues[1][1] entitled “Longitudinal Changes in Cerebral Perfusion, Perivascular Space Volume, and Ventricular Volume in a Healthy Cohort Undergoing a Spaceflight Analog” published recently in the American Journal of Neuroradiology . We