Ferrozzi F, Zuccoli G, Tognini G, Castriota-Scanderbeg A, Bacchini E, Bernasconi S, Campani R
Istituto di Scienze Radiologiche, Università degli Studi, Parma.
Radiol Med. 1999 Dec;98(6):490-4.
Computed tomography (CT) and, more recently, ultrasound (US), have proved excellent tools for quantifying adipose tissue distribution. Body fat distribution is an important factor in the treatment of obesity and its complications. We investigated the correlation between CT and US measurements in pediatric obesity.
Forty obese children and adolescents aged 4.1-14.8 years were submitted to CT and US. Intra-abdominal, subcutaneous and total body fat were calculated (in cm2), with the CT image analysis software. The rectus muscle-spine and rectus muscle-aorta distances, as indicative of visceral fat thickness, were measured on US images with(out) compression. The distance between skin-fat and fat-rectus muscle interfaces was measured as subcutaneous fat thickness. We also compared US-CT findings with other morphometric variables--i.e., patient's (ideal) body weight and skin fold measures.
At US, the rectus muscle-aorta and rectus muscle-spine distances ranged 2.4-7.5 cm (mean: 4.47 cm) and 3.6-8.9 cm (mean: 5.79 cm), respectively. The skin-rectus muscle distance ranged 1.2-7.5 cm (mean: 3.14 cm). A statistically significant correlation was found between the CT measurement of visceral fat and the aorta-rectus muscle and rectus muscle-spine distances (r = 0.80 and 0.74, respectively). The US measurements of subcutaneous fat were correlated with CT subcutaneous fat area (r = 0.82). No correlation was found between overweight, as calculated by body mass index, and CT or US fat.
Our findings indicate that US is as useful as CT in evaluating body fat distribution in pediatric obesity.
计算机断层扫描（CT）以及最近的超声（US）已被证明是量化脂肪组织分布的优秀工具。身体脂肪分布是肥胖症及其并发症治疗中的一个重要因素。我们研究了小儿肥胖症中CT和US测量值之间的相关性。
40名年龄在4.1至14.8岁之间的肥胖儿童和青少年接受了CT和US检查。使用CT图像分析软件计算腹内、皮下和全身脂肪（以平方厘米为单位）。在有（无）压迫的US图像上测量腹直肌-脊柱和腹直肌-主动脉距离，作为内脏脂肪厚度的指标。测量皮肤-脂肪和脂肪-腹直肌界面之间的距离作为皮下脂肪厚度。我们还将US-CT检查结果与其他形态测量变量进行了比较，即患者的（理想）体重和皮褶测量值。
在超声检查中，腹直肌-主动脉和腹直肌-脊柱距离分别为2.4至7.5厘米（平均：4.47厘米）和3.6至8.9厘米（平均：5.79厘米）。皮肤-腹直肌距离为1.2至7.5厘米（平均：3.14厘米）。在内脏脂肪的CT测量值与主动脉-腹直肌和腹直肌-脊柱距离之间发现了统计学上的显著相关性（分别为r = 0.80和0.74）。皮下脂肪的超声测量值与CT皮下脂肪面积相关（r = 0.82）。通过体重指数计算的超重与CT或超声脂肪之间未发现相关性。
我们的研究结果表明，在评估小儿肥胖症的身体脂肪分布方面，超声与CT同样有用。
