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Updated: Nov 11, 2025
Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
Published on: December 19, 2020
Imaging Profile of the COVID-19 Infection: Radiologic Findings and Literature Review
Ming-Yen Ng1, Elaine Y P Lee1, Jin Yang1
1Department of Diagnostic Radiology (M.Y.N., E.Y.P.L., P.L.K., M.D.K.), Department of Medicine (M.M.S.L., C.K.M.H.), and Medical Artificial Intelligence Lab Program (M.D.K.), University of Hong Kong, Hong Kong; Department of Diagnostic Radiology (M.Y.N.), Department of Clinical Microbiology and Infection Control (J.Y., K.Y.Y.), and Department of Medicine (F.Y., X.L., H.W.), University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, China; Department of Radiology, Queen Mary Hospital, Hong Kong (C.S.Y.L.); and Department of Radiology, Pamela Youde Nethersole Eastern Hospital, Hong Kong (B.L.).
This study found that ground-glass opacities with consolidation in the lungs are the main imaging findings for coronavirus disease 2019 (COVID-19). Computed tomography (CT) is more sensitive than chest radiography for detecting these COVID-19 pulmonary changes.
Area of Science:
- Radiology
- Infectious Diseases
- Pulmonology
Background:
- Coronavirus disease 2019 (COVID-19) is a global pandemic.
- Understanding the radiologic manifestations of COVID-19 is crucial for diagnosis and management.
Purpose of the Study:
- To describe the computed tomography (CT) and chest radiographic findings in 21 patients with COVID-19.
- To review follow-up imaging in five cases.
- To conduct a systematic literature review on COVID-19 radiologic features.
Main Methods:
- Retrospective analysis of 21 COVID-19 cases from Shenzhen and Hong Kong.
- Review of CT and chest radiography findings.
- Systematic literature review of published radiologic features of COVID-19.
Main Results:
- Predominant CT findings included peripheral ground-glass opacities and consolidation.
- Pleural effusions and lymphadenopathy were absent.
- CT demonstrated higher sensitivity than chest radiography in detecting pulmonary changes.
- Literature review confirmed bilateral, peripheral ground-glass opacities with consolidation as common CT findings.
Conclusions:
- Pulmonary manifestations of COVID-19 are characterized by ground-glass opacities and consolidation on CT.
- Findings from Chinese centers align with previous international reports.
- CT is a more sensitive imaging modality for COVID-19 than chest radiography.
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