J Korean Med Sci.  2020 Dec;35(46):e413. 10.3346/jkms.2020.35.e413.

Establishment of a Nationwide Korean Imaging Cohort of Coronavirus Disease 2019

• Yoon SH
• Ham SY
• Nam BD
• Chae KJ
• Lee D
• Yoo JY
• Bak SH
• Kim JY
• Kim JH
• Kim KB
• Jung JI
• Lim JK
• Lee JE
• Chung MJ
• Lee YK
• Kim YS
• Jo JE
• Lee SM
• Kwon W
• Park CM
• Kim YH
• Jeong YJ

• KMID: 2509040
• DOI: http://doi.org/10.3346/jkms.2020.35.e413

Abstract

Background
The Korean Society of Thoracic Radiology (KSTR) recently constructed a nation-wide coronavirus disease 2019 (COVID-19) database and imaging repository, referred to the Korean imaging cohort of COVID-19 (KICC-19) based on the collaborative efforts of its members. The purpose of this study was to provide a summary of the clinico-epidemiological data and imaging data of the KICC-19.
Methods
The KSTR members at 17 COVID-19 referral centers retrospectively collected imaging data and clinical information of consecutive patients with reverse transcription polymerase chain reaction-proven COVID-19 in respiratory specimens from February 2020 through May 2020 who underwent diagnostic chest computed tomography (CT) or radiograph in each participating hospital.
Results
The cohort consisted of 239 men and 283 women (mean age, 52.3 years; age range, 11–97 years). Of the 522 subjects, 201 (38.5%) had an underlying disease. The most common symptoms were fever (n = 292) and cough (n = 245). The 151 patients (28.9%) had lymphocytopenia, 86 had (16.5%) thrombocytopenia, and 227 patients (43.5%) had an elevated CRP at admission. The 121 (23.4%) needed nasal oxygen therapy or mechanical ventilation (n = 38; 7.3%), and 49 patients (9.4%) were admitted to an intensive care unit. Although most patients had cured, 21 patients (4.0%) died. The 465 (89.1%) subjects underwent a low to standard-dose chest CT scan at least once during hospitalization, resulting in a total of 658 CT scans. The 497 subjects (95.2%) underwent chest radiography at least once during hospitalization, which resulted in a total of 1,475 chest radiographs.
Conclusion
The KICC-19 was successfully established and comprised of 658 CT scans and 1,475 chest radiographs of 522 hospitalized Korean COVID-19 patients. The KICC-19 will provide a more comprehensive understanding of the clinical, epidemiological, and radiologic characteristics of patients with COVID-19.

Keyword

Coronavirus Infections; Radiography; Thoracic; Computed Tomography

Figure

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  Fig. 1 The number of patients with COVID-19 gathered at each institution.COVID-19 = coronavirus disease 2019.

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  Fig. 2 Distribution of the number of curated chest radiographic examinations in the Korean imaging cohort of COVID-19.COVID-19 = coronavirus disease 2019.

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