Reproducibility of abdominal fat assessment by ultrasound and computed tomography

Figure 1. Abdominal ultrasound demonstrating the measurement methods. A: Thickness of the visceral fat in the space between the internal (deep) fascia of the rectus abdominis muscle and the anterior wall of the aorta, determined during expiration. B: Thickness of the subcutaneous fat in the space between the skin and the external (superficial) fascia of the rectus abdominis muscle.

Figure 2. Axial CT scan after manual segmentation of the peritoneal anatomical boundaries and contours of the psoas muscle and vertebral body to determine the area of subcutaneous and visceral fat.