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Fig. 4 | BMC Pulmonary Medicine

Fig. 4

From: MRI-assessed diaphragmatic function can predict frequent acute exacerbation of COPD: a prospective observational study based on telehealth-based monitoring system

Fig. 4

The morphology of diaphragm and lung hyperinflation at end of maximal breathing in COPD subgroups. a.b. present mild group at the end of maximal inspiration (a) and expiration (b); c.d. present moderate group at the end of maximal inspiration (c) and expiration (d); e.f. present severe group at the end of maximal inspiration (e) and expiration (f); g.h. present very severe group at the end of maximal inspiration (g) and expiration (h). Mild group, FEV1 ≥ 80% predicted; moderate group, 50% ≤ FEV1 < 80% predicted; severe group, 30% ≤ FEV1 < 50% predicted; very severe group, FEV1 < 30% predicted

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