有无体模定量CT测定健康成人椎体骨密度的对照研究  

A Comparative Study of Measuring Vertebral BMD in Healthy Adults with or Without Phantom Quantitative CT

作　　者：朱丽 杜霞 黄震 李彦 陆舜钦 付强[1] 何维明[1] 焦俊 Zhu Li;Du Xia;Huang Zhen;Li Yan;Lu Shun-qin;Fu Qiang;He Wei-ming;Jiao Jun(Department of Imaging,Anshun People's Hospital,Anshun 561000,Guizhou Province,China;Department of Imaging,Affiliated Hospital of Guizhou Medical University,Guiyang 550000,Guizhou Province,China)

机构地区：[1]贵州省安顺市人民医院影像科,贵州安顺561000 [2]贵州医科大学附属医院影像科,贵州贵阳550000

出　　处：《中国CT和MRI杂志》2023年第8期164-166,共3页Chinese Journal of CT and MRI

基　　金：安顺市科技计划立项(安市科社[2020]61号)。

摘　　要：目的 对照定量CT(QCT)评价无体模MSCT骨密度软件测定椎体骨密度的可行性。方法 选取2021年3月至2021年8月在我院行胸部CT体检者,其中包含T12-L2椎体的成人167例,采集扫描数据后均同时用QCT和无体模MSCT骨密度测量软件处理,对比两种方法测量的T12、L1、L2椎体的差异性和相关性,评价无体模MSCT骨密度测量软件的临床应用价值。结果 1.QCT测量的椎体骨密度相对较高,差异具有统计学意义(P<0.05),但差值稳定,无统计学差异(P>0.05);2.两种方法测量的数据相比,无体模MSCT与QCT测量的椎体骨密度存在相关性(P<0.05),且为正相关(r>0);3.年龄和两种方法测量的椎体骨密度之间存在相关性(P<0.05),且为负向的相关性(r<0);4.体型偏瘦、皮下脂肪少者不能使用无体模MSCT骨密度软件测量。结论 无体模MSCT骨密度软件对诊断骨质疏松具有应用价值,相对QCT,无体模MSCT骨密度测量软件假阳率可能性偏高。Objective Compare quantitative CT(QCT)to evaluate the feasibility of phantom modelless MSCT bone mineral density software for measuring vertebral bone mineral density.Methods One hundred and sixty-seven cases who underwent vertebral body CT physical examination in our hospital were enrolled in the current study from Mar.2021 to Aug.2021.The BMD of T12-L2 vertebral bodies measured by modelless MSCT and quantitative CT were compared.P value less than 0.05 was considered as statistical significant difference.Results 1.The vertebral BMD measured by QCT was relatively high,with statistically significant difference(P<0.05),but the difference was stable,without statistical difference(P>0.05);2.Compared with the data measured by the two methods,the vertebral BMD measured by modelless MSCT and QCT was correlated(P<0.05)and positively correlated(r>0);3.There was a negative correlation between age and vertebral BMD measured by the two methods(P<0.05);4.Those who are thin and have less subcutaneous fat cannot use phantom free MSCT bone mineral density software to measure.Conclusion The phantom free MSCT bone mineral density software has application value in diagnosing osteoporosis,and the false positive rate of phantom free MSCT bone mineral density measurement software is higher than QCT.

关 键 词：MSCT QCT 骨密度 椎体 

分 类 号：R445[医药卫生—影像医学与核医学]