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Jpn J Infect Dis . Chest CT Evaluation of 11 Persistent Asymptomatic Patients With SARS-CoV-2 Infection

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  • Jpn J Infect Dis . Chest CT Evaluation of 11 Persistent Asymptomatic Patients With SARS-CoV-2 Infection


    Jpn J Infect Dis


    . 2020 Jun 30.
    doi: 10.7883/yoken.JJID.2020.264. Online ahead of print.
    Chest CT Evaluation of 11 Persistent Asymptomatic Patients With SARS-CoV-2 Infection

    Shuo Yan 1 , Hui Chen 1 , Ru-Ming Xie 1 , Chun-Shuang Guan 1 , Ming Xue 1 , Zhi-Bin Lv 1 , Lian-Gui Wei 1 , Yan Bai 1 , Bu-Dong Chen 1


    AffiliationsExpand

    Abstract

    Eleven asymptomatic carriers who received nasal or throat swab test for SARS-CoV-2 after close contacts with patients who developed symptomatic 2019 coronavirus disease (COVID-19) were enrolled in this study. The chest CT images of enrolled patients were analyzed qualitatively and quantitatively. There were 3 (27.3%) patients had normal first chest CT, two of which were under age of 15 years. Lesions in 2 (18.2%) patients involved one lobe with unifocal presence. Subpleural lesions were seen in 7 (63.6%) patients. Ground glass opacity (GGO) was the most common sign observed in 7 (63.6%) patients. Crazy-paving pattern and consolidation were detected in 2 (18.2%) and 4 (36.4%) cases, respectively. Based on deep learning quantitative analysis, volume of intrapulmonary lesions on first CT scans was 85.73?84.46 cm3. In patients with positive findings on CT images, average interval days between positive real-time reverse transcriptase polymerase chain reaction assay and peak volume on CT images were 5.1?3.1 days. In conclusion, typical CT findings can be detected in over 70% of asymptomatic SARS-CoV-2 carriers. It mainly starts as GGO along subpleural regions and bronchi, and absorbs in nearly 5 days.

    Keywords: asymptomatic; coronavirus; multidetector computed tomography; pneumonia.

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