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Figure 1 | Critical Care

Figure 1

From: Limits of normality of quantitative thoracic CT analysis

Figure 1

Frequency distribution of Hounsfield unit numbers. Frequency distribution of attenuation divided into intervals of 50 Hounsfield units (HU). Vertical lines indicate the ranges of lung inflation used in the literature: overinflated, between -1,000 and -901 HU; well aerated, between -900 and -501 HU; poorly aerated, between -500 and -101 HU; not aerated, <-100 HU. Note that frequency distribution refers to volume and not to weight. CT, computed tomography

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Critical Care

ISSN: 1364-8535