Fig. 1From: The impact of critical illness on the expiratory muscles and the diaphragm assessed by ultrasound in mechanical ventilated childrenUltrasound position and measurements of diaphragmatic thickness in the zone of apposition (a, b) of the 3 abdominal muscles (m. obliquus externus abdominis, m. obliquus internus abdominis, m. transversus abdominis), separate and together (c, d); and of the m. rectus abdominis (e, f) with a 7–15 MHz linear array transducer. Pictures were taken with the informed consent of the legal guardiansBack to article page