Computed Tomography Findings of Chest in Covid-19

ABSTRACT

Background: CT is based on the fundamental principle that the density of the tissue passed by the x-ray beam can be measured from the calculation of the attenuation coefficient. Using this principle, CT allows the reconstruction of the density of the body, by a two-dimensional section perpendicular to the axis of the acquisition systemThe role of chest CT imaging in the management of patients with COVID-19 has evolved since the onset of the pandemic. Specifically, the description of CT scan findings, use of chest CT imaging in various acute and subacute settings, and its usefulness in predicting chronic disease have been defined better.In April 2020, the Fleischner Society released a multinational expert consensus statement that offered guidance to physicians on the use of thoracic imaging in various health care environments. The Society of Thoracic Radiology, the American College of Radiology, and the Radiological Society of North America offered additional guidance for the use of both plain chest radiography and CT imaging for patients suspected to have COVID-19. The GGO often lacks a rounded configuration. These opacities may lack a peripheral distribution. An atypical appearance is uncommonly associated with COVID-19 pneumonia and is more indicative of an alternate diagnosis, including bacterial pneumonia with or without cavitation, and tree-in-bud branching centrilobular nodules. The indeterminate pattern is observed mainly in elderly patients and is the most challenging.