DXA在体成分测定方面的应用进展

Progress in the measurement of body composition with dual energy X-ray absorptiometry

在代谢综合征等疾病状态下,体成分测定比体重更有意义。体成分包括体内脂肪组织和瘦组织分布及百分组成,其测定方法有二分法和三分法等。双能X线骨密度测定(DXA)属于三分法,精确度高完全可以替代CT测量腹部和内脏脂肪。

Measurement of body composition is more important than body weight in metabolic syndrome and some other diseases. The body composition includes the distribution and percentage composition of fat tissue and lean tissue. The techniques used to measure body composition include two- and three-compartment method, etc. Dual-energy X-ray absorptiometry （DXA） is a three-compartment method. DXA is more precise than CT in the measurement of abdominal and visceral fat tissue.