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Fig. 4 | Respiratory Research

Fig. 4

From: Spirometric assessment of emphysema presence and severity as measured by quantitative CT and CT-based radiomics in COPD

Fig. 4

Maximal expiratory flow-volume curves of two representative subjects with severe emphysema or no emphysema. Patient with severe emphysema (left panel) had %LAA-950insp = 24 whereas the patient with no emphysema (right panel) had %LAA-950insp = 4 at CT. Note the flatter slope in the former when flow was plotted against expired volume (black lines) but not pletysmographic thoracic volume (grey lines), indicating greater thoracic gas compression at high-to-mid lung volumes

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Respiratory Research

ISSN: 1465-993X

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