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. 2020 Aug 4;21(11):1256–1264. doi: 10.3348/kjr.2020.0567

Fig. 1. COVID-19 infected 68-year-old male patient with CURB-65 score of 1.

Fig. 1

(A) Non-enhanced axial chest CT, (B) CALP with green color-coded axial image, (C) color-coded axial image, (D) color-coded 3D reconstructed image. Color-coded regions of (C) and (D) were identified by HU according to following; purple, −1000 to −951 HU; blue, −950 to −901 HU; sky blue, −900 to −851 HU; green, −850 to −801 HU; yellow, −800 to −751 HU; and red, −750 to −701 HU. Total lung volume was 4318.0 mL, emphysema %; 10.3%, NALP 77.0%, emphysema volume 444.8 mL, NAPLV 3324.9 mL, and CALPV 168.4 mL. Patient was discharged alive without any ICU admission or mechanical ventilator treatment. CALP = COVID-affected lung proportion, CALPV = CALP volume, CEFS = critical event-free survival, HU = Hounsfield unit, ICU = intensive care unit, NALP = normally aerated lung proportion, NALPV = NALP volume