**3. Conclusion**

In summary, a hazy increase in opacity in the lung parenchyma without obscuring the underlying bronchovascular structures on chest CT is called a groundglass pattern. Ground-glass opacities occur as a result of a wide variety of interstitial and alveolar diseases. The pandemic caused by SARS-CoV-2 has suddenly turned into the most important health problem of our day. Chest CT is frequently used due to the limited use of chest radiographs in COVID-19 disease. Thus, the ground glass pattern, which is the most common finding of this virus in CT, entered our lives intensively. Pneumonia is a common serious symptom of infection, characterized mainly by fever, cough, dyspnea, and bilateral infiltrates on lung imaging. Methods such as chest radiography, chest computed tomography, and pulmonary ultrasonography are used for imaging the lungs. Different imaging modalities have advantages and disadvantages. Today, there have been advanced developments in cross-sectional imaging methods. In many cases, cross-sectional methods for chest diseases have replaced radiography. However, chest radiographs continue to play a basic role. In the first step, the priority is always chest radiography. Although chest CT is highly sensitive, it has a low specificity. To facilitate interpretation and reduce the variability of radiological reports, there are some standardizations in the reports. Among the current classifications for COVID-19, it is possible to divide radiological findings into typical, indeterminate, atypical, and negative findings. Ground-glass opacities are classified into seven different groups according to their morphological patterns: diffuse, centrilobular, nodular, mosaic attenuation, crazy paving, halo sign, and reversed halo sign. New studies will both allow us to better recognize these viruses and improve the examination and treatment.
