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Updated: Jul 15, 2025
Lung CT Segmentation to Identify Consolidations and Ground Glass Areas for Quantitative Assesment of SARS-CoV Pneumonia
Published on: December 19, 2020
Chest computed tomography findings of patients infected with Covid-19 and their association with disease evolution
L N Bomfim1, C R A de Barros1, F C S Veloso1
1Universidade Federal de Alagoas, Endereço: Av. Lourival Melo Mota, S/N, Tabuleiro do Martins, Maceió, AL, Cep: 57072-970, Brazil.
Introduction:
To describe CT findings in patients with confirmed Covid-19 infection and correlate them with the disease evolution stages.
Methods:
This is a historical cohort observational analytical study carried out with outpatients, inpatients, and emergency patients from a private hospital in Maceió/AL, Brazil. The final sample consisted of 390 patients with positive RT-PCR for Covid-19 with available laboratory tests and chest CT results.
Results:
The most frequent initial symptoms were cough, fever, dyspnea and headache. The most commonly found comorbidities were hypertension, diabetes mellitus and obesity. A total of 22% of the CT scans showed no alterations; ground-glass opacity was the most frequently found one. There was a significant association between age, comorbidities, pulmonary involvement, ground-glass opacity, mosaic attenuation and percentage of pulmonary involvement with death. The analysis of the disease stages showed a significant association with laboratory data (CRP and platelet levels), ground-glass opacity and mosaic attenuation with the disease evolution stages in relation to the days since symptom onset.
Conclusion:
The disease evolution of Covid-19 occurs in stages, and this study describes tomographic findings in patients with confirmed Covid-19 infection and shows they vary depending on the disease evolution stages.
Implications For Practice:
This paper provides important addition to the various records that have been accumulated through the Covid-19 pandemic.
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