Synopsis

Imaging has an important role to play in the diagnosis, management and follow-up of patients with Covid-19.

CT scan is an important modality. There are typical findings that allow a diagnosis of Covid-19 with high specificity. There are some unique signs due to the presence of angiopathy such as vascular "tree-in-bud" and target sign and perfusion defects without thrombosis.

Follow-up of patients in the medium term usually shows regression of lesions. Some show persistent perfusion defects.

MRI may show Covid-19 findings but cannot used routinely. Hyperpolarized Xe and O2 enhanced UTE MRI are being explored as options for follow-up.