定量CT测量骨密度的准确性研究  

Accuracy of quantitative CT in measuring bone mineral density

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

机构地区：[1]四川大学华西第四医院老年科,四川省成都市610041 [2]射洪县中医院骨科,四川省射洪县629200 [3]四川大学公共卫生学院卫生统计教研室,四川省成都市610065 [4]宜宾县中医院内科,四川省宜宾县644600

出　　处：《中国临床康复》2004年第18期3594-3595,共2页Chinese Journal of Clinical Rehabilitation

摘　　要：目的:探讨定量CT测量骨密度的准确性。方法:用定量CT测量20例猪腰椎骨,将测得的骨密度与椎体的灰质量及灰质量密度比较。结果:定量CT的骨密度与灰质量密度线性相关性较好(松质r=0.80,皮质r=0.79,P<0.01),与灰质量的相关性较差(皮质r=0.39,松质r=0.38,P>0.05)。结论:定量CT测量骨密度准确性较好。AIM:To study the accuracy of quantitative computed tomography (QCT) for measuring bone mineral density(BMD). METHODS:Totally 20 pig lumbar vertebral bodies were measured by QCT. The BMD assayed by QCT was compared with bone ash weight and bone ash density. RESULTS:BMD measuted by QCT had siguificant linear correlation with bone ash density (spongy r=0.80, cortex r=0.79,P< 0.01), while it did not show significant correlation with bone ash weight(cortex r=0.39, spongy r=0.38,P >0.05). CONCLUSION:Measurement of BMD by QCT is accurate.

关 键 词：骨密度 骨质疏松/放射摄影术 体层摄影术 X线计算机 

分 类 号：R681.4[医药卫生—骨科学]