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Updated: Oct 17, 2025
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Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
Published on: December 19, 2020
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Review on radiological evolution of COVID-19 pneumonia using computed tomography
Chiara Casartelli1, Fabiana Perrone1, Maurizio Balbi2
1Medical Oncology Unit, University Hospital of Parma, Parma 43126, Italy.
World Journal of Radiology
|October 11, 2021
Summary
Computed tomography (CT) scans show COVID-19 pneumonia lung changes peak within 2 weeks, followed by repair. However, CT scans indicate that lung lesions may not fully resolve, highlighting the need for longer follow-up.
Area of Science:
- Radiology
- Infectious Diseases
- Pulmonology
Background:
- Pneumonia is a primary manifestation of coronavirus disease 2019 (COVID-19).
- Chest computed tomography (CT) is crucial for initial COVID-19 evaluation, disease monitoring, and assessing treatment effectiveness.
Purpose of the Study:
- To review literature on radiological follow-up of COVID-19 lung alterations using CT.
- To describe the dynamic evolution of COVID-19 pneumonia.
- To assess the utility of radiological follow-up.
Main Methods:
- A PubMed search was conducted using relevant keywords.
- Studies published up to October 30, 2020, were selected.
- 16 studies were included out of 69 identified.
Main Results:
- COVID-19 pneumonia exhibits distinct stages within a short follow-up period.
- Radiographic deterioration peaks around 2 weeks, followed by absorption and repair signs.
- Limited evidence suggests incomplete resolution of lung lesions on later CT scans.
Conclusions:
- CT scan follow-up aids in understanding COVID-19 pneumonia's clinical impact and managing sequelae.
- Longer follow-up is recommended to determine complete resolution or long-term lung damage.
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