Basic diaphragm ultrasound training: Curriculum implementation and learning trajectory among diaphragm ultrasound naive trainees

Figure 1 The measurements of diaphragmatic thickness. A: Correct ways of measurements of diaphragm thickness at peak inspiration and end-expiration. Measurements A: Calipers placed within the two lines and not including the two lines into the total thickness; B: Examples of incorrect measurements of diaphragmatic thickness. Measurements A: Includes the two white lines into the measurement; measurements B: Includes the bottom white line into the measurement.