Fig. 6From: The “pandemic” increase in lung ultrasound use in response to Covid-19: can we complement computed tomography findings? A narrative reviewRepresentation of the 6-zone model for lung ultrasound score (see Ref. [21]). The parasagittal lines are the midclavicular, anterior and posterior axillary lines; the transverse line is at the 4th intercostal space, roughly equivalent to hilar linesBack to article page