|
|||||
|
|
| DXA测量骨密度的精确度评估 | |
| 引用本文： | 郭郡浩,施慧鹏,赵燕玲.DXA测量骨密度的精确度评估[J].徐州医学院学报,2010,30(1):40-44. |
| 作者姓名： | 郭郡浩 施慧鹏 赵燕玲 |
| 作者单位： | 1. 南京军区南京总医院中西医结合科,江苏,南京,210002 2. 上海交通大学附属第六人民医院骨科,上海,200233 3. 北京和睦家医院妇产科,北京,100029 |
| 摘 要： | 目的分析双能x线吸收测定术（dual—energyX—rayabsorptiometry，DXA）测量骨密度（bonemineraldensity，BMD）的最小有意义变化（1eastsignificantchange，LSC）。方法测量30名受检者腰椎和髋部BMD，连续测量2次，计算其精确度误差、最小有意义变化，预计随访间隔时间。结果L1-L4、L2-L4、左全髋部、右全髋部的精确度误差相对较低，标准差的均方根（RMS—SD）分别为0．006、0．007、0．006、0．007g／cm2，最小有意义变化（LSC—SD）分别为0．016、0．018、0．018、0．019g/cm2；变异系数的均方根（RMS—CV）分别为0．005、0．007、0．006、0．007，最小有意义变化（LSC—CV）分别为0．015、0．020、0．018、0．020。LSC—SD、LSC—CV的变异系数分别为0．238、0．356。预计随访问隔时间随着感兴趣区精确度误差的增加而延长。结论DXA测量骨密度的精确度误差较小，感兴趣区首选L1-L4、L2-L4、全髋部为宜，感兴趣区的精确度误差越大则预计随访时间越长。 |
| 关 键 词： | 骨密度 骨质疏松症 精确度误差 最小有意义变化 预计随访间隔时间 双能X线吸收法 |
Evaluation of the precision error on measurements of bone mineral density with dual-energy X-ray absorptiometry |
|
| GUO Junhao,SHI Huipeng,ZHAO Yanling.Evaluation of the precision error on measurements of bone mineral density with dual-energy X-ray absorptiometry[J].Acta Academiae Medicinae Xuzhou,2010,30(1):40-44. | |
| Authors: | GUO Junhao SHI Huipeng ZHAO Yanling |
| Institution: | 1. Department of Integrated Traditional Chinese and Western Medicine, Nanjing General Hospital of Nanjing Military Command, PLA, Nanjing, Jiangsu 210002, China;2. Department of Orthopedics Surgery, Shanghai Sixth People＇s Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China; 3. Department of Obstetrics and Gynecology, Beijing Hemujia Hospital, Beijing 100029, China) |
| Abstract: | Objective To analyze the least significant change(LSC) of bone mineral density(BMD) measurement with dual energy X-ray absorptiometry(DXA).Methods 30 subjects had their BMD in the lumbar vertebrae and hip measured twice consecutively.The precision error(PE),LSC and monitoring time interval(MTI) were calculated.Results In the region of interest(ROI) of L1-L4,L2-L4,left-hip and right-hip,the root mean square standard deviation(RMS-SD) was 0.006,0.007,0.006 and 0.007 g/cm2,respectively;LSC-SD was 0.016,0.018,0... |
| Keywords: | bone mineral density osteoporosis precision error least significant change monitoring time interval dual-energy X-ray absorptiometry |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |