定量CT与双能X线骨密度仪测量腰椎骨密度准确性比较  

Comparative study on the bone mineral density of lumbar vertebrae measured by quantitative CT versus dual-energy X-ray bone densitometer

作　　者：李毅芳[1] 陈丹丹[1] 蔡燕芝 LI Yifang;CHEN Dandan;CAI Yanzhi(Department of Endocrinology,the Second People's Hospital of Hunan Province,Changsha 410007,China)

机构地区：[1]湖南省第二人民医院内分泌科,湖南长沙410007

出　　处：《中国医学物理学杂志》2018年第10期1178-1180,共3页Chinese Journal of Medical Physics

摘　　要：目的:观察并比较定量CT与双能X线骨密度仪测量腰椎各椎体间骨密度的准确性。方法:100例研究对象选自健康体检者,将其按照不同测量方式分为观察组和对照组。观察组采取双能X线方式,对照组采取定量CT方式,测量腰椎体的骨密度,观察两种方式的测量准确性。结果:对照组男性和女性的L_2-L_4椎体骨密度不尽相同,椎体间骨密度值存在明显差异(P<0.05),且由L_2-L_4以递增趋势呈现。观察组男性和女性的L_2-L_4椎体骨密度数值无显著差异(P>0.05)。结论:对腰椎各椎体间骨密度采用定量CT进行测量,可有效提升测量准确度,为临床诊断和治疗疾病提供有效参考。Objective To compare the accuracy of quantitative computed tomography(CT)and double-energy X-ray bone densitometer for measuring the bone mineral density(BMD)between lumbar vertebrae.Methods A total of 100 healthy subjects were selected and divided into observation group and control group according to different measurement methods.Double-energy X ray was adopted in observation group,while quantitative CT was applied in control group.The accuracies of measurements were analyzed and compared.Results The BMD of L2-L4 vertebral body in males and females from control group was different.Moreover,the differences in BMD between the vertebral body were significant(P<0.05),and the BMD was gradually increased by L2-L4.No statistical differences were found in the BMD of L2-L4 vertebral body in males and females from observation group(P>0.05).Conclusion Using quantitative CT for the measurement of BMD between lumbar vertebrae can effectively improve the accuracy of measurement and provide references for clinical diagnosis and treatment of diseases.

关 键 词：腰椎 X线计算机 体层摄影术 骨密度 光密度测定法 

分 类 号：R322.71[医药卫生—人体解剖和组织胚胎学]