腹部インピーダンス法を用いた内臓脂肪測定器

抄録

Computed tomography (CT) scan and magnetic resonance imaging (MRI) at the umbilical level are the standard techniques used for the assessment of visceral fat accumulation. Visceral fat area (VFA) measured in a single slice at L4 level correlated significantly with the total abdominal visceral fat volume measured on multislice CT scan. In a large-scale study of Japanese population, the mean number of obesity-related cardiovascular risk factors (hypertension, low high-density lipoprotein-cholesterolemia and/or hyper-triglyceridemia, and hyperglycemia) was greater than 1.0 at 100 cm² of VFA, irrespective of gender, age and body mass index (BMI). Radiation exposure for measurement of VFA is inevitable. Therefore, an alternative simple, rapid, safe, noninvasive, and convenient technique to evaluate visceral fat accumulation is desirable in routine clinical practice. To date, the abdominal bioelectrical impedance analysis (BIA) method represents a simple, rapid, noninvasive, and convenient technique that can specifically measure VFA. The voltage recorded at the flank to the flow of current between the umbilicus and the back correlates significantly with VFA and is unaffected by SFA. The VFA measured by abdominal BIA correlates significantly with VFA determined by CT scan. Routine measurement of VFA by BIA method should provide more information on the importance of visceral fat.