Table 1: Stages based on CT image in SARS-CoV-2 virus.
S. No | Stages based on CT image | Conditions according to each stage |
1 | Ultra-early stage | No clinical manifestation in this stage, laboratory results are negative but tests positive for throat swab generally between 1-2 weeks after exposure to contaminated areas. |
2 | Early stage | Initial period within three days once encountered with cold, wheeze, dry cough, pyrexia etc., it shows particular numerous strewed irregulars or groups of ground-glass opacities, and divided by beehive-like stiffen interlobular septa. |
3 | Rapid Progression stage | Period of three to seven days after being influenced by the virus, a merged &huge-scale light coalesce with air-bronchogram inside was manifested by CT. |
4 | Consolidation stage | Period of about one to two weeks after exposure to clinical manifestation, CT image portrayed several strewed coalesce in lower density and lesser range than the before stage. |
5 | Dissipation stage | Hardly between 2-3 weeks after clinical manifestation, furthermore was the range of lesions reduced. Patchy consolidation or strip-like opacity was shown by CT image, after sometime grid-like denser interlobular septum, thickening and strip-like twist of bronchial wall and less scattered patchy consolidations was observed. |