Fig. 5From: MRI-assessed diaphragmatic function can predict frequent acute exacerbation of COPD: a prospective observational study based on telehealth-based monitoring systemCorrelation matrix of clinical parameters and diaphragm function. AE, acute exacerbation; BMI, body mass index; CAT, chronic obstructive pulmonary disease assessment test; 6MWT, 6-min walk test; FEV1, forced expiratory volume at 1Â s; FVC, forced vital capacityBack to article page