Quantitation of Muscles and Fat by Ultrasonography: A Useful Method in the Assessment of Malnutrition in Children

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Abstract
We used ultrasonography to measure muscles in the arms and thighs of 16 children with malignant diseases. Thicknesses of transverse sections of the brachial biceps muscle and the femoral quadriceps muscle were measured by ultrasound at the midpoint of the right arm and thigh. These two measures had a linear correlation (r=0.76). The ultrasound measurements did not differ from those obtained by the CT scan which was used as a reference standard. The reproducibility of the measurements was good, the coefficient of variation was 2.4% for the midarm muscles and 2.8% for the midthigh muscles. We conclude that the ultrasound method combined with simple anthropometric measurements is helpful in the assessment of nutritional status of children with potential malnutrition.