Fig. 3

Relationship among ultrasound, BIA, and CT in muscle mass evaluation. The correlation among ultrasound, BIA, and CT. a Muscle mass. b Muscle mass change. a Muscle mass was compared in 17 patients at day 1. Both ultrasound and BIA were correlated with CT measurements. b Muscle mass change was compared from day 1 to each measurement day (1, 2, 3, and 2 patients at days 3, 5, 7, and 10). Ultrasound, not BIA, was correlated with CT measurements. The correlations were shown under both graphs. Pearson correlation coefficient was used to investigate the relationships. BIA bioelectrical impedance analysis, CT computed tomography