Comparing brain MRIs, blood brain barrier integrity and cognitive performance in those with and without Long COVID symptoms and in those that have and have notbeen previously hospitalized with COVID.

This study uses sensitive measures of brain blood flow an its response to change to inhaled oxygen levels to determine how the brain protects its oxygen supply.

The objective of this study is to learn how anemia may affect oxygen delivery to the brain as measured by magnetic resonance imaging (MRI). By studying this, we hope to better identify people who may benefit from correction of their anemia.

The objective of this study is to better understand how a single ventricular heart with Fontan physiology may affect brain health.

A study to look at how having chronic anemia impacts the brain.