claim: ct scan is a viable standard for coronavirus test
evidence_1: imaging modality chest radiograph (cxr) or computed tomography (ct) is an essential tool for covid-19 diagnosis in clinical practice.", "according to a research article in radiology, ct is far more sensitive, commonly detecting cases the swab misses.", "now, computed tomography (ct) is widely used as the imaging modality for the detection of covid-19 pneumonia.")