FIGURE 3.

Specific field of application of lung ultrasound in the different studies. COVID-19: coronavirus disease 2019. ^#: including evaluation of the diagnostic accuracy of lung ultrasound in comparison with lung computed tomography and chest radiography; ^¶: screening, contrast-enhanced ultrasound, application of lung ultrasound in nursing homes, “self-ultrasound”, guiding therapy, deciding on intubation, wireless ultrasound, assisting in patient resuscitation, application of lung ultrasound with artificial intelligence and with robotics.