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Fig. 6 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 6

From: COVID-19 clinico-radiological mismatch: a proposal for a novel combined morphologic/volumetric CT severity score with blinded validation

Fig. 6

Multiple patients proved with COVID-19, having variable bilateral moderate/border-line or severe/critical lung involvement. a Bilateral large GGOs (extending > 3 cm deep from the pleural lining and implicating around 16% of lung volume) show internal air densities (red arrow) representing “air bubble sign” … COV [M5-S2] … CTSI [10/25] … Moderate degree. b Bilateral large GGOs (involving > 50% of lung volume) with few “air bubble densities”… COV [M5-S4] … CTSI [23/25] … Severe or critical degree. c Bilateral large early secondary fibrotic changes on top of GGOs with parenchymal distortion (around 19% of lung volume) … COV [M6-S2] … CTSI [12/25] … Moderate degree. d Bilateral large early secondary fibrotic changes on top of GGOs with parenchymal distortion (around 40% of lung volume) … COV [M6-S3] … CTSI [18/25] … Severe or critical degree. e Bilateral mid-zonal mainly peripheral patchy GGOs with “crazy paving pattern” (involving around < 18% of lung volume) … COV [M7-S2] … CTSI [12/25] … Moderate degree. f Bilateral multiple variable-sized patchy proximal and peripheral GGOs with “crazy-paving pattern” (around 40% of lung volume) … COV [M7-S3] … CTSI [18/25] … Severe or critical degree

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