Multimodality imaging in COVID-19 patients: A key role from diagnosis to prognosis

Table 1 Comparison of the three imaging methods in patient with coronavirus disease 2019 pneumonia

	Lung ultrasound	Chest X-ray	Chest CT, HCRT
	Lung thickening	Nd	Lung thickening
	Confluent B lines	Aspect of white cottony lung infiltrate	Images of lung infiltrates
	Small peripheral consolidations	Increase in hyperechoic areas	Subpleural consolidations
	Translobar and non-translobar consolidations	Large translobar confluent and white thickening	Translobar consolidations
	Multilobar distributionFront and posterior multiple sector scans (if possible)	Cotton aspect of multilobar and bilateral interstitial pathology	Anomalies with distribution on more than two lobes and bilateral
	Rare pleural effusion	Rare pleural effusion	Rare pleural effusion
Clinical aspect of the patient and three techniques compared
Early stage	Focal B lines	It may be negative or with few interstitial lobular changes	Few multilobar ground glass areas
Mild infection phase	Focal B lines with pleural thickening	Multilobar interstitial alterations with cottony aspect	Confluent opacities with ground glass areas
Severe infection stage	Parenchymal consolidations (hepatization of the parenchyma)	Increase in interstitial consolidations with multilobar thickening phenomena	Interstitial alveolar syndrome consolidations air bronchogram

CT: Computed tomography; HRCT: High resolution computed tomography.