中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (6): 945-949.doi: 10.12307/2023.907

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

女性腰椎退行性病变患者腰椎CT值对骨质疏松症的诊断作用

凯依塞尔•阿布都克力木,麦麦提敏•阿卜力米提,李  磊,杨晓凯,张玉坤,刘  帅   

  1. 新疆医科大学第六附属医院脊柱外科二病区,新疆维吾尔自治区乌鲁木齐市   830002
  • 收稿日期:2022-10-24 接受日期:2022-12-13 出版日期:2024-02-28 发布日期:2023-07-12
  • 通讯作者: 李磊,硕士,主任,新疆医科大学第六附属医院脊柱外科二病区,新疆维吾尔自治区乌鲁木齐市 830002
  • 作者简介:凯依塞尔•阿布都克力木,男,1996年生,新疆医科大学在读硕士,医师,主要从事脊柱外科方面的研究。

Effect of lumbar CT values in the diagnosis of osteoporosis in women patients with lumbar degenerative diseases

Kaiyisaier•Abudukelimu, Maimaitimin•Abulimiti, Li Lei, Yang Xiaokai, Zhang Yukun, Liu Shuai   

  1. Ward II, Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • Received:2022-10-24 Accepted:2022-12-13 Online:2024-02-28 Published:2023-07-12
  • Contact: Li Lei, Master, Ward II, Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • About author:Kaiyisaier•Abudukelimu, Master candidate, Physician, Ward II, Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China

摘要:


文题释义:

CT值:每一个体积单元内的物质对X射线的衰减系数代表了该体积单元的物质密度,记为CT值,单位是亨氏单位(hounsfield unit,HU)。CT值=1 000×(μx-μwater)/μwater,其中μwater和μx分别代表蒸馏水和某体积单元对X射线的衰减系数。骨质密度较高,一般在300-3 000 HU。


背景:双能X射线吸收法可能会错误地抬高严重腰椎退行性病变患者的骨密度值,而腰椎松质骨CT值可能协助双能X射线吸收法减少骨质疏松症的漏诊。

目的:应用腰椎CT值来诊断女性腰椎退行性病变患者中的骨质疏松症。
方法:回顾性分析在新疆医科大学第六附属医院脊柱外科住院诊疗的192例女性患者骨密度检测结果和腰椎CT等临床资料。根据CT上腰椎退变严重程度,将患者分为退变组(n=107)和对照组(n=85)。测量两组患者L1椎体中轴松质骨CT值,记录L2-L4及髋部T值和骨密度均值。参考先前的研究,L1椎体CT值≤110 HU诊断为骨质疏松,比较两组患者通过双能X射线吸收法和CT值诊断骨质疏松的患病率。

结果与结论:①两组患者CT值与L2-L4椎体的T值、骨密度均值均呈显著正相关(P < 0.001),而对照组中相关性更高;②退变组中腰椎T值和骨密度均值显著高于对照组(P < 0.05),CT值明显低于对照组(P=0.001),而两组的髋部T值和骨密度均值相比差异无显著性意义;③所有患者经CT阈值诊断的骨质疏松症患病率高于T值诊断的骨质疏松(51.0%和42.7%);④两组在110例经双能X射线吸收法确诊为非骨质疏松的患者中,CT值诊断的骨质疏松症患病率高达23.6%,而退变组中的患病率比对照组更高(分别为31.7%和14.0%);⑤漏诊的骨质疏松症患病率在退变组中经腰椎双能X射线吸收法确诊的非骨质疏松患者中高达38.6%(27/70),而对照组中为19.6%(11/56);⑥提示骨质疏松症在年龄≥50岁的女性腰椎退行性病变患者中很常见;测量腰椎松质骨CT值可作为此类患者诊断骨质疏松症的有效补充方法,尤其是在严重退变的腰椎退行性病变患者中能够发现更多漏诊的骨质疏松症患者。

https://orcid.org/0000-0003-1730-103X (凯依塞尔•阿布都克力木) 

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 骨质疏松症, 腰椎退行性疾病, 腰椎CT值, 双能X射线吸收法, 骨密度

Abstract: BACKGROUND: Patients with severe lumbar degenerative disease may have their bone mineral density incorrectly raised by dual-energy X-ray absorptiometry. While lumbar cancellous bone Hounsfield unit value can assist dual-energy X-ray absorptiometry in reducing osteoporosis misdiagnosis.  
OBJECTIVE: To identify osteoporosis in woman patients with lumbar degenerative diseases using lumbar CT scans.
METHODS: Bone mineral density test results and lumbar CT data of 192 women patients who were treated at the Department of Spine Surgery, Sixth Affiliated Hospital of Xinjiang Medical University were retrospectively reviewed. All patients were divided into a degeneration group (n=107) and a control group (n=85) according to the criteria of severity of vertebral degeneration as assessed on CT of the lumbar spine. The CT value of axial cancellous bone of L1 vertebral body was measured in the two groups. The T score and bone mineral density of the hip and L2-L4 were recorded. According to previously published studies, osteoporosis was diagnosed at L1 vertebral CT values ≤110. The prevalence of osteoporosis diagnosed by dual-energy X-ray absorptiometry and CT values was compared between the two groups.  
RESULTS AND CONCLUSION:  (1) CT values were significantly and positively correlated with T scores and mean bone mineral density of the L2-L4 vertebrae in both groups (P < 0.001), while the correlation was higher in the control group. (2) Lumbar T scores and bone mineral density values were significantly higher in the degeneration group than those in the control group (P < 0.05) and CT values were significantly lower in the degeneration group than that in the control group (P = 0.001). Hip T scores and bone mineral density were not significantly different in the two groups. (3) The prevalence of osteoporosis diagnosed by CT thresholds was higher in all patients than that diagnosed by T values (51.0% and 42.7%). (4) The prevalence of osteoporosis diagnosed by CT values was as high as 23.6% in the 110 patients diagnosed with non-osteoporosis by dual energy X-ray absorptiometry in both groups, and was higher in the degeneration group than that in the control group (31.7% and 14.0%, respectively). (5) The prevalence of missed osteoporosis was as high as 38.6% (27/70) of non-osteoporosis patients diagnosed by dual-energy X-ray absorptiometry of the lumbar spine in the degeneration group compared to 19.6% (11/56) in the control group. (6) It is concluded that osteoporosis is common in female patients with lumbar degenerative diseases aged ≥50 years. Measurement of lumbar cancellous bone CT values may be a useful complementary method for diagnosing osteoporosis in patients with lumbar degenerative diseases, especially in patients with severe degenerative lumbar degenerative diseases where more missed osteoporosis patients can be identified.

Key words: osteoporosis, lumbar degenerative disease, lumbar CT value, dual-energy X-ray absorptiometry, bone mineral density

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