Fig. 1
Brightness-mode ultrasound imaging of SAT. a Example of an ultrasound image taken at the site distal triceps. Within the region of interest, the software evaluation algorithm automatically measured subcutaneous adipose tissue thickness (SAT) along 118 vertical lines from the lower border of the dermis to the upper border of the muscle fascia. Mean SAT thickness (d) including embedded fibrous structures (dI) was 8.1 mm, excluding embedded structures (dE), SAT thickness was 7.5 mm. b Ultrasound measurement sites: upper abdomen (UA), lower abdomen (LA), erector spinae (ES), distal triceps (DT), brachioradialis (BR), lateral thigh (LT), front thigh (FT), medial calf (MC). c Series of evaluated ultrasound images: image depth was 30 mm, sum of SAT thicknesses at the eight sites including embedded structures (DI) was 36.1 mm (DE = 33.0 mm). Thicknesses of individual sites dI (dE in parentheses) at UA: 2.1 mm (1.6 mm), LA: 3.8 mm (3.4 mm), ES: 2.9 mm (2.9 mm), DT: 7.2 mm (6.4 mm), BR: 4.4 mm (4.2 mm), LT: 6.3 mm (5.5 mm), FT: 5.9 mm (5.5 mm), MC 3.5 mm (3.5 mm)