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

  • 1Department of Radiology, Seoul National University Hospital, Seoul National College of Medicine, Seoul, Korea
  • 2Department of Radiology, Kangbuk Samsung Hospital, Seoul, Korea
  • 3Department of Radiology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
  • 4Department of Radiology, Research Institute of Clinical Medicine of Jeonbuk National UniversityBiomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
  • 5Department of Radiology, Dankook University Hospital, Cheonan, Korea
  • 6Department of Radiology, Chungbuk National University Hospital, Cheongju, Korea
  • 7Department of Radiology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea
  • 8Department of Radiology, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Korea
  • 9Department of Radiology, Chungnam National University Hospital, College of Medicine, Daejeon, Korea
  • 10Department of Radiology, Daegu Fatima Hospital, Daegu, Korea
  • 11Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
  • 12Department of Radiology, Kyungpook National University Hospital, School of Medicine, Kyungpook National University, Daegu, Korea
  • 13Department of Radiology, Chonnam National University Hospital, Gwangju, Korea
  • 14Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
  • 15Department of Radiology, Seoul Medical Center, Seoul, Korea
  • 16Department of Radiology, Yeungnam University Hospital, Yeungnam University College of Medicine, Daegu, Korea
  • 17Department of Radiology, Busan Medical Center, Busan, Korea
  • 18Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
  • 19Department of Radiology, Ewha Womans University Seoul Hospital, Seoul, Korea
  • 20Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute, Busan, Korea


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.
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.
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.
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.


Coronavirus Infections; Radiography; Thoracic; Computed Tomography
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