Inclusion Criteria:  Consent provided Aged 12-70 years old Meets MRI screening criteria  Diagnosed with COVID19, documented by positive COVID19 test (Nasopharyngeal swab or saliva swab) and are within 3 months post recovery*.  Recovery from COVID19 is defined as asymptomatic for at least 2 weeks prior to study visit 1 and screen negative based on SickKids guidelines.  Exclusion Criteria:  Pregnant or lactating* A cold or flu within the last 2 weeks