双能X线吸收测量法（DEXA）测定成年人单纯性肥胖症脂肪含量研究

 为研究肥胖症定量诊断分析与价值,应用双能X线吸收测量法(DEXA)对120例肥胖者及对照组80例正常体质量者进行全身脂肪含量测定,研究不同年龄段、性别的肥胖症患者及正常体质量人体内脂肪含量及分布规律,探讨肥胖症患者及正常体质量者DEXA的诊断指标。结果显示利用DEXA测定脂肪含量与体质量指数法（BMI）关系比较,男性相关系数r＝0.871（P<0.001）,表明两种评价方法的一致性较好;女性相关系数r＝0.521（P<0.001）,两种评价方法的一致性一般;诊断单纯性肥胖最佳“切点”男性为19.45%,女性为34.00%。故DEXA测量人体内全身的脂肪含量可进行诊断肥胖症及定量分析。

Study on Fat Content of Simple Obesity in Adults with Dual-energy X-ray Absorptiometry Method(DEXA)

To study the diagnosis of obesity quantitative analysis and the value, 120 cases of obesity and the control group, 80 cases of normal weight body fat content were measured by the application of dual energy, X-ray absorptiometry (DEXA) , to study the body fat content and distribution in different ages, gender of obesity patients and normal body mass; explored the DEXA diagnostic indicators in patients with obesity and normal body mass. The results showed that, compared by the relationship between using of DEXA determined fat content and body mass index (BMI)the male correlation coefficient r= 0.871 (P<0.001), two evaluation methods showed that’s good of the consistency; Female correlation coefficient r= 0.521 (P<0.001), the consistency of the two evaluation methods is in general; diagnosis of simple obesity best "cut point" for males 19.45 %, 34.00 % for females. Therefore, whole body DEXA measurement of body fat content can diagnose obesity and quantitative analysis.