COVID-19 Survivorship Registry

Inclusion Criteria:

* have tested positive for SARS-CoV-2 and discharged from the ICU or,
* have tested positive for SARS-CoV-2 and have been discharged from hospital or,
* have tested positive for SARS-CoV-2 but was NOT hospitalized
* ages 18 and over, and
* competent and willing to sign informed consent and comply to all aspects of the protocol

CONTROL Inclusion Criteria

* No clinical history of COVID-19,
* No active clinical symptoms indicative of possible COVID-19,
* Ages 18 and over,
* competent and willing to sign informed consent and comply to all aspects of the protocol

Exclusion Criteria:

• Participants cannot sign consent

Any individual who meets any of the following criteria will be excluded from participation to the MRI or x-ray portion of the study:

* Participants who are pregnant or currently trying to get pregnant
* Participants unable to comply with any portion of the protocol (i.e. removing metals prior to entering the MRI scan room) or who have contraindications to MRI scanning (i.e., non-MRI-conditional pacemakers/defibrillators, pregnancy, ferromagnetic implants such as aneurysm clips, surgical clips, prostheses, artificial hearts, valves with steel parts, metal fragments, shrapnel, tattoos near the eye, or steel implants)
* Persistent symptoms related to COVID-19 (in which case the patient may be re-screened later) As is done for all patients undergoing clinical MRI in our department, each patient will be screened for contraindications to MRI with a routine questionnaire prior to scanning.

CONTROL Exclusion Criteria

Patients with any of the following are excluded from as controls:

* Pace maker
* Poorly controlled diabetes
* Poorly controlled Restrictive lung disease
* Heart failure
* Parkinson's Disease
* Hypertension
* Any diagnosis or history of autonomic neuropathy