双能X线骨密度仪测量不同条件椎骨的精度差异初探  

Elementary explore of precision for vertebral bone in different condition by double energry X ray bone-density apprature

作　　者：康后生[1] 赵雨[1] 陈玉华[1] 左莹[1] 严忠逊[1] 

机构地区：[1]川北医学院附属医院,四川南充637000

出　　处：《中国临床康复》2002年第15期2254-2255,共2页Chinese Journal of Clinical Rehabilitation

摘　　要：目的探讨DPX-MD双能X线骨密度仪测量腰椎铝体模、活体腰椎、死体腰椎(带软组织)骨密度(BMD)的短期精密度,以便为骨密度检测质量控制和减少误差提供依据。方法用DPX-MD骨密度仪测量铝体模和3个活体、1个死体腰椎标本,作短期精度研究。结果变异系数铝体模最小,活体以骨密度正常者变异系数较骨密度异常者小,死体最大,其L2～4变异系数各为0.131%、0.542%、1.033%、2.844%和3.442%。结论铝体模短期精度最好,活体以骨密度正常者短期精度较骨密度异常者好,死体最差。说明不同条件椎骨的精度存在差异。Objective To explore the short-time precision for aluminium body model ,vital lumb ar vertebrae and non-vital lumbar ver-tebral by DPX-MD double energy X-ray bone-density apprature.Method Aluminium body model,three vital lu mbar vertebral and one non-vital lumbar vertebral were measured by DPX-MD bone-density apprature.Result Coefficient of variation was the sma llest in aluminium body model,the largest in non-vital lumbar vertebral,larger in normal bone-density than abnormal bone-den sity,in L 2-4 0.131%,3.442%,0.542%,1.033%,2.844%respectively.Conclusion There are different precision in dif ferent vertebral.

关 键 词：双能X线骨密度 铝体膜 腰椎 短期精度 骨质疏松 

分 类 号：R681[医药卫生—骨科学] TH774[医药卫生—外科学]