The Role of Chest High Resolution CT and RT-PCR in Diagnosis of Different Stages of Coronavirus (COVID-19) Pneumonia

Author(s): Mohamed N.E. Kassem*, Doaa T. Masallat

Journal Name: New Emirates Medical Journal
An official journal of Emirates Medical Association

Volume 2 , Issue 2 , 2021

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Purpose: The purpose of this study is to investigate how RT-PCR (real time–polymerase-chain-reaction) and chest High-Resolution Computed Tomography (HRCT) can detect COVID-19 (Coronavirus Disease 2019) disease in the early, progressive and severe stages, as well as patient’s outcome.

Methods: We perform a prospective study with chest HRCT on 206 patients with positive RT-PCR test. The patients were divided into three groups; early stage (100 patients), progressive stage (70 patients) and severe stage (36 patients).

Results: The early stage involved typical category (COVID-19 Reporting and Data System, CO-RADS 5, 34 cases - 34%), indeterminate category (CORADS 3, six cases - 6%), atypical category (CO-RADS 4, ten cases - 10%) and normal chest HRCT imaging (CO-RADS 1, 50 cases - 50%). The progressive stage involved a typical category (CO-RADS 5, 70 cases, 100%), The severe stage involved a typical category (CO-RADS 5, 36 cases, 100%).

Conclusion: RT-PCR is the gold standard and specific tool for confirming COVID-19 infection. Combination of RT-PCR and chest HRCT is used for the early diagnosis of COVID-19 pneumonia. Chest HRCT is positive in 50% of patients in the early stage of COVID-19. Chest HRCT is not only detecting pulmonary parenchymal changes but also determining patient’s outcome in the progressive and severe stages of COVID-19 (CO-RADS 5). Patients with progressive stage will not need ventilator and patients with severe stage should receive ventilator.

Keywords: HRCT, RT-PCR, COVID-19, Ground glass opacities, Consolidation, Pneumonia.

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Article Details

Year: 2021
Published on: 05 April, 2021
Page: [108 - 114]
Pages: 7
DOI: 10.2174/0250688202666210405153628

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