Please go through these articles to see that CT-Chest is much superior compared to Chest X-ray to pick up changes in the lungs in asymptomatic or early stage cases of COVID-19.
Article CT imaging and clinical course of asymptomatic cases with CO...
Article Chest CT Findings in Cases from the Cruise Ship “Diamond Pri...
Article Chest CT Findings in Coronavirus Disease-19 (COVID-19): Rela...
This COVID-19 dataset consists of Non-COVID and COVID cases of both X-ray and CT images. The associated dataset is augmented with different augmentation techniques to generate about 17100 X-ray and CT images. The dataset contains two main folders, one for the X-ray images, which includes two separate sub-folders of 5500 Non-COVID images and 4044 COVID images. The other folder contains the CT images. It includes two separate sub-folders of 2628 Non-COVID images and 5427 COVID images.
Cite it in your research work:
El-Shafai, Walid; E. Abd El-Samie, Fathi (2020), “Extensive and Augmented COVID-19 X-Ray and CT Chest Images Dataset”, Mendeley Data, v2