The comparison of chest CT and RT-PCR during the diagnosis of COVID-19

Avni Uygar Seyhan 1, Fatih Doğanay 2, Erdal Yılmaz 1, Ömer Aydıner 3, Rohat Ak 1 * , Serap Demir Tekol 4
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1 Department of Emergency Medicine, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
2 Department of Emergency Medicine, Edremit Public Hospital, Balıkesir, Turkey
3 Department of Radiology, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
4 Department of Microbiology, Kartal Dr. Lütfi Kırdar City Hospital, Istanbul, Turkey
* Corresponding Author
J CLIN MED KAZ, Volume 18, Issue 1, pp. 53-56.
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Objective: Our aim in this study is to compare the diagnostic accuracy of chest computed tomography and Real-time Reverse Transcriptase Polymerase Chain Reaction in a population with suspected Coronavirus Disease 2019 (COVID-19) presenting at the emergency department.
Material and methods: The study included 257 patients presented to the emergency department with suspected COVID-19. We included all symptomatic patients who received a chest computed tomography and at least one Polymerase Chain Reaction test for detection of COVID-19. The detection rate of COVID-19 infection based on the initial chest computed tomography and Real-time Reverse Transcriptase Polymerase Chain Reaction was compared.
Results: A total of 257 patients, 130 women and 127 men, were included in the study.  The average age of all patients was 41,12±15,77. Sensitivity of Real-time Reverse Transcriptase Polymerase Chain Reaction test was 71% while that of computed tomography was found to be 49%. The ground glass appearance and/or peripheral distribution findings in 126 patients can be said to be the representative of computed tomography findings for COVID-19.
Conclusion: Chest computed tomography should not be used routinely as a screening or diagnostic tool for COVID-19, and additional risks that may arise due to computed tomography imaging should be considered.


Seyhan AU, Doğanay F, Yılmaz E, Aydıner Ö, Ak R, Demir Tekol S. The comparison of chest CT and RT-PCR during the diagnosis of COVID-19. J CLIN MED KAZ. 2021;18(1):53-6.


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