Fig. 19
From: Ultrasound and non-ultrasound imaging techniques in the assessment of diaphragmatic dysfunction
Reproduced under Open Access Creative Commons License: Fayssoil et al. PLoS One 2019;14(4):e0214288
Representative tracings of peak velocity of the right hemidiaphragm during a sniff maneuver using tissue Doppler imaging in a healthy volunteer (left panel) and in a patient with Duchenne muscular dystrophy (right panel). The peak velocity in the healthy subject (12Â cm/s) was nearly as twice as fast as the peak velocity in the patient Duchenne muscular dystrophy (7Â cm/s).