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. 2020 Aug 21;159(1):205–211. doi: 10.1016/j.chest.2020.08.2054

Figure 1.

Figure 1

Proposed scanning protocol, placing extra emphasis on the posterior lung regions given the tendency of coronavirus disease 2019 to manifest in these areas. A, Zone 1, the intercostal spaces in the mid-clavicular line. B, Zone 2, the intercostal spaces in the mid-axillary line, plus the area just above the diaphragm in the posterior axillary line. C, Zone 3 (the intercostal spaces between the spine and scapula) and Zone 4 (the area beneath the scapula). AAL = anterior axillary line; PAL = posterior axillary line; PSL = parasternal line.