Fig. 3From: Serial ultrasound assessment of diaphragmatic function and clinical outcome in patients with amyotrophic lateral sclerosisAverage time course of ΔTmax as recorded by the ultrasound technique in Survivors (panel a) and Non-survivors (panel b) undergoing NIV. Continuous line indicates the period under unassisted breathing, dotted portion shows the period following NIV commencementBack to article page