Fig. 2From: Muscle ultrasound to diagnose sarcopenia in chronic kidney disease: a systematic review and bayesian bivariate meta-analysisUltrasound assessment of shear wave elastography and cross-sectional area (CSA). (a) The region of rectus femoris was selected in transverse and longitudinal images followed by the calculation with echo intensity analysis [27]; (b) CSA of the rectus femoris [35]. Copyright, Oxford University Press and John Wiley and SonsBack to article page