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Comment: Added COVID banner with minor revisions

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As the COVID-19 pandemic unfolds, imaging is playing an increasingly vital role in determining therapeutic options, patient care management and new research directions. We are learning that patients with novel COVID-19 infection have a variety of clinical presentations and outcomes.  They may be asymptomatic with a positive test for infection, or exhibiting only mild cold like symptoms. Recent clinical experience has shown that chest imaging in infected patients may show specific lung findings that can be used to triage patients for isolation and predict for severe infection sequelae.  To date, most experience has been with chest CT and radiographic exams.  Use of imaging for COVID-19 infected patients is proving to be valuable for patient triage, risk assessment for poor outcome, particularly in at risk populations, and follow-up.  Beyond the respiratory system, advanced imaging is being used to track renal, hepatic, cardiac and neurological sequelae of COVID-19.  There is a growing corpus of digital pathology images as well, drawn from both biopsy and post mortem samples. Whole body MR or CT virtual autopsies are being performed in some institutions.