Reproducibility of diaphragm thickness measurements by ultrasonography in patients on mechanical ventilation

Figure 1 Ultrasonography image of a patient taken at end expiration. Diaphragm identified as the last set of parallel line, pleural and peritoneal membranes overlying the less echogenic muscle.

Figure 2 Flow of the patient enrolled into the study. USG: Ultrasonography.

Figure 3 Bland and Altman plots of intraobserver agreement in diaphragm measurement. The result of three occasions (A-C) and between two observers (D).