中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (30): 4866-4870.doi: 10.12307/2024.631

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

MR T2* mapping成像技术定量评价腰椎小关节炎软骨损伤

陈  吉,张  晨,张  濒,黄磊涛   

  1. 南京医科大学第四附属医院骨科,江苏省南京市   210031
  • 收稿日期:2023-06-10 接受日期:2023-07-27 出版日期:2024-10-28 发布日期:2023-12-27
  • 通讯作者: 黄磊涛,硕士,主治医师,南京医科大学第四附属医院骨科,江苏省南京市 210031
  • 作者简介:陈吉,男,1981年生,江苏省南京市人,汉族,副主任医师,主要从事脊柱退行性病变的诊治。
  • 基金资助:
    南京医科大学科技发展基金(NMUB20220153),项目负责人:黄磊涛

Quantitative evaluation of lumbar facet arthritis-induced cartilage injury by MR T2* mapping

Chen Ji, Zhang Chen, Zhang Bin, Huang Leitao   

  1. Department of Orthopedics, Fourth Affiliated Hospital of Nanjing Medical University, Nanjing 210031, Jiangsu Province, China
  • Received:2023-06-10 Accepted:2023-07-27 Online:2024-10-28 Published:2023-12-27
  • Contact: Huang Leitao, Master, Attending physician, Department of Orthopedics, Fourth Affiliated Hospital of Nanjing Medical University, Nanjing 210031, Jiangsu Province, China
  • About author:Chen Ji, Associate chief physician, Department of Orthopedics, Fourth Affiliated Hospital of Nanjing Medical University, Nanjing 210031, Jiangsu Province, China
  • Supported by:
    Science and Technology Development Fund of Nanjing Medical University, No. NMUB20220153 (to HLT)

摘要:


文题释义:

T2* mapping成像技术:在MRI技术的基础上,对机体组织进行T2* mapping扫描成像并测定组织T2*值的一项新成像技术。根据不同病变组织T2*值的差异定量评估组织病变,尤其在关节软骨评价方面具有显著优势。
腰椎小关节炎:腰椎小关节是整个脊柱中唯一的滑膜关节,它与同节段前方的椎间盘构成一个功能单位——三关节复合体,共同承载人体脊柱的负荷,该部位的病变主要起始于关节软骨、关节囊及滑膜组织的炎症,表现为关节软骨的纤维化、腐蚀、微裂及剥脱,最终引起患者一定程度的腰痛等症状。


背景:腰椎小关节炎是引起下腰痛的一个主要原因,目前主要依靠MRI进行初步定性诊断,但仍有一定漏诊、误诊的概率发生,因此MR T2* mapping成像技术有望成为定量检查腰椎小关节炎软骨损伤的重要检测手段。

目的:探讨MR T2* mapping成像技术在定量分析腰椎小关节炎软骨损伤退变中的应用价值。
方法:收集南京医科大学第四附属医院2020年4月至2022年3月门诊或住院合并下腰痛共110例患者,设为病例组;同时招募无症状志愿者80例,设为对照组。对所有纳入对象L1-S1的小关节行3.0 T MR扫描,获取T2* mapping横断位图像和T2WI图像,分别对所有小关节软骨进行Weishaupt分级及T2*值测量,收集数据并行统计学分析。不同小关节Weishaupt分级之间小关节软骨T2*值比较采用单因素方差分析。

结果与结论:①经统计分析发现,病例组腰椎小关节软骨T2*值(17.6±1.5) ms明显较对照组(21.4±1.3) ms降低,差异有显著性意义(P < 0.05);②在病例组中,随着腰椎小关节Weishaupt分级增加,小关节软骨T2*值也呈逐渐下降趋势,且这种差异有显著性意义(P < 0.05);③提示T2* mapping能够较好地显示腰椎小关节软骨损伤的早期病理变化,腰椎小关节软骨的T2*值能够定量评估腰椎小关节的软骨损伤程度;T2* mapping成像技术能为影像学诊断腰椎小关节炎软骨早期损伤提供很好的理论依据,具有重要的临床应用价值。

https://orcid.org/0009-0006-7430-9790 (陈吉);https://orcid.org/0000-0003-0979-1905 (黄磊涛) 

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: 腰椎小关节炎, T2* mapping, T2*值, 小关节软骨退变, 下腰痛

Abstract: BACKGROUND: Lumbar facet arthritis is one of the main causes of low back pain. At present, MRI is mainly used for preliminary diagnosis, and there is still a certain probability of missed diagnosis and misdiagnosis. Therefore, MR T2* mapping imaging technology is expected to become an important means of quantitative detection of cartilage damage in lumbar facet arthritis.  
OBJECTIVE: To investigate the application value of MR T2* mapping imaging technique in quantitative analysis of cartilage damage and degeneration of lumbar facet joint. 
METHODS: A total of 110 outpatient or inpatient patients with low back pain in Fourth Affiliated Hospital of Nanjing Medical University from April 2020 to March 2022 were collected and set as case group. At the same time, 80 asymptomatic volunteers were recruited as the control group. T2* mapping transectal images and T2WI images were obtained by 3.0T MR Scanning for the facet joints of all included subjects L1-S1. Weishaupt grading and T2* value measurement were performed for all facet joint cartilage, and the data were collected for parallel statistical analysis. The comparison of T2* values of facet joint cartilage between different articular Weishaupt grades was performed by one-way analysis of variance.
RESULTS AND CONCLUSION: (1) Statistical analysis found that the T2* value of lumbar facet joint cartilage in the case group (17.6±1.5) ms was significantly lower than that in the control group (21.4±1.3) ms (P < 0.05). (2) In the case group, with the hierarchical increase of lumbar facet joint Weishaupt, the T2* value of facet joint cartilage also showed a gradual decreasing trend, and the difference was statistically significant (P < 0.05). (3) It is concluded that T2* mapping can better display the early pathological changes of lumbar facet joint cartilage injury, and T2* value of lumbar facet joint cartilage can quantitatively evaluate the degree of lumbar facet joint cartilage injury. T2* mapping imaging technique can provide a good theoretical basis for the imaging diagnosis of the early cartilage injury induced by lumbar facet arthritis and has important clinical application value. 

Key words: lumbar facet arthritis, T2* mapping, T2* value, facet joint cartilage degeneration, lower back pain

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