highly significantp < 0.001
The correlation between the measurements obtained by two operators was highly significant in the right diaphragm TF (ICC 0.9, R 2 0.8, p < 0.001, coefficient of repeatability 2.6 % and 8 % respectively) as well as caudal displacement (ICC 0.9, R 2 0.9, p < 0.001, coefficient of repeatability 14.5 %).