双能X线骨密度仪在15cm水深中测量骨密度的准确性  

Accuracy of dual energy X-ray absorptiometry in determining bone mineral dens ity 15 cm under water

作　　者：杨小明[1] 熊海[1] 刘静[1] 李轩[2] 潘小平[3] 尚家云[1] 雷梅[1] 吕先慧[1] 兰丹壁 

机构地区：[1]四川大学华西附属第四医院老年科,四川省成都市610000 [2]射洪县中医院骨科,四川省射洪县610000 [3]四川大学公共卫生学院卫生统计教研室,四川省成都市610000 [4]宜宾县中医院内科,四川省宜宾县610000

出　　处：《中国临床康复》2004年第15期2894-2895,共2页Chinese Journal of Clinical Rehabilitation

摘　　要：目的:探讨双能X线骨密度仪(dualenergyX-rayabsorptiometry,DXA)测量骨密度的准确性。方法:用DXA(前后位扫描)测量5具浸泡在15cm水深中的猪腰段脊柱,共计20例椎骨,计算测量的结果与灰重及灰重密度相关性。结果:骨矿含量与灰重呈显著正相关性(r=0.95,P<0.01),而骨密度与灰重无明显相关性(r=0.41,P>0.05)。结论:DXA测量骨密度中骨矿含量较准确,而骨密度较差。AIM:To study the accuracy of dual energy X-ray absorptiometry(DXA) in measuri ng bone mineral density. METHODS:Twenty lumbar vertebraes from 5 pigs were measured by DXA(anterior-po sterior view, AP) 15 cm below water.The data of DXA were compared with bone ash and bone ash density to calculate the correlation. RESULTS: Bone mineral content (BMC) had a significantly positive relation with bone ash mass(r=0.95,P< 0.01), while BMD was not significantly related with bon e ash mass (r=0.41,P >0.05). CONCLUSION: DXA can accurately evaluate bone mineral content, but not bone min eral density

关 键 词：双能X线骨密度仪 15cm水深 骨密度测量 准确性 骨质疏松 

分 类 号：R681[医药卫生—骨科学] R816.8[医药卫生—外科学]