Diagnostic and Interventional Radiology
Chest Imaging - Original Article

Utility of chest CT in diagnosis of COVID-19 pneumonia

1.

Department of Radiology, The Second Affiliated Hospital of Dalian Medical University, Dalian City, China

2.

Department of Radiology, Suizhou Hospital, Hubei University of Medicine, Suizhou Central Hospital, Hubei, China

3.

Department of Ultrasound, The First Affiliated Hospital of Dalian Medical University, Dalian City, China

4.

Medical Imaging Center, Taihe Hospital, Shi Yan City, Hubei Provence, China

Diagn Interv Radiol 2020; 26: 437-442
DOI: 10.5152/dir.2020.20144
Read: 289 Downloads: 99 Published: 29 May 2020

PURPOSE

We aimed to explore the imaging findings of computed tomography (CT) in diagnosing coronavirus disease 2019 (COVID-19) and its clinical value for further evaluation of suspected cases.

 

METHODS

Files of 155 patients visiting the fever clinics at our hospital and affiliated hospitals from January 20th to February 9th, 2020 were searched. Among them, 140 cases (including 82 males and 58 females) were included as suspected COVID-19 cases based on clinical and epidemiological history; the CT image features of 70 cases with suggestive findings on CT, confirmed by positive nucleic acid test were analyzed and evaluated. The sensitivity and specificity of CT in diagnosing COVID-19 were evaluated in patients with epidemiological history.

 

RESULTS

Of the 70 patients, 84.3% showed bilateral lung involvement on CT; 27 cases (38.6%) showed ground-glass opacity (GGO), which was mostly distributed in the subpleural area (55.7%), and this sign was mainly observed in early COVID-19 patients. In addition, 41 cases (58.6%) manifested GGO combined with focal consolidation opacity, 2 (2.8%) had flake-like consolidation opacity, with involvements of the periphery of lung field and the central zone (44.3%), and this sign was mostly observed in severe or critical patients. Concomitant signs such as pleural effusion and mediastinal lymph node enlargement were rare. Among patients with epidemiological history, the sensitivity of CT in diagnosing COVID-19 was 89.7% (70/78), and the specificity was 88.7% (55/62).

 

CONCLUSION

CT shows high sensitivity and specificity in diagnosing COVID-19. CT is an important examination method in evaluation of suspected cases and assessment of disease severity.

 

You may cite this article as: Luo N, Zhang H, Zhou Y, et al. Utility of chest CT in diagnosis of COVID-19 pneumonia. Diagn Interv Radiol 2020; 26:437–442

Files
EISSN 1305-3612