Fig. 2
From: Automated computed tomographic scoring of lung disease in adults with primary ciliary dyskinesia
Variation of histogram characteristics according to lung disease severity. Histogram of lung densities in a patient with mild disease (black line; FEV1 = 81%; FVC = 101%;SD = 110.1; kurtosis =31.4). The histogram of lung densities in a patient with severe disease (grey line; FEV1 = 25%; FVC = 54%) demonstrates higher scattering (SD = 213.9) and flattening (kurtosis = 6.7) of the curve