高丽香,袁慧书.T1ρ技术定量评估踝关节距骨骨软骨损伤[J].中国医学影像技术,2020,36(3):444~447
T1ρ技术定量评估踝关节距骨骨软骨损伤
T1ρ technique in quantitatively evaluation on ankle osteochondral lesions of talus
投稿时间:2019-04-10  修订日期:2020-02-20
DOI:10.13929/j.issn.1003-3289.2020.03.034
中文关键词:  踝关节  关节疾病  磁共振成像
英文关键词:ankle joint  joint diseases  magnetic resonance imaging
基金项目:
作者单位E-mail
高丽香 北京大学第三医院放射科, 北京 100191  
袁慧书 北京大学第三医院放射科, 北京 100191 huishuy@sina.com 
摘要点击次数: 1205
全文下载次数: 510
中文摘要:
      目的 探讨采用T1ρ技术评估踝关节距骨骨软骨损伤(OLT)的可行性。方法 对40例踝关节损伤患者行常规MRI和T1ρ成像,之后1周内行关节镜检查。根据常规MRI、关节镜及T1ρ成像,依照Hepple改良分型标准将踝关节OLT分为Ⅰ~Ⅳ型(分别为Ⅰ~Ⅳ型组)。随机选取20例患者正常软骨区域为正常对照组,测量各组软骨T1ρ值,并分析其差异;比较常规MRI评估OLT分型与关节镜结果的一致性。结果 T1ρ成像可清晰显示踝关节距骨软骨,且不同损伤程度呈现不同色阶。随损伤程度加重,软骨T1ρ值逐渐延长。Ⅰ型组软骨T1ρ值[(43.07±2.05)ms)与Ⅱ型组[(45.24±2.19)ms]之间差异无统计学意义(P=0.12),其余各组间软骨T1ρ值差异均具有统计学意义(P<0.05)。常规MRI评估OLT分型与关节镜结果的一致性良好(Kappa=0.80,P<0.01)。结论 T1ρ技术可清晰显示踝关节距骨软骨,定量评估OLT,尤其适用于早期OLT患者。
英文摘要:
      Objective To explore the feasibility of T1ρ technique in evaluating ankle osteochondral lesions of talus (OLT). Methods Totally 40 patients with ankle OLT underwent both conventional MRI and T1ρ imaging, also arthroscopy examination within 1 week. Conventional MRI,arthroscopy and T1ρ imaging were observed, and ankle OLT were classified into Ⅰ-Ⅳ type (type Ⅰ-Ⅳ injury group, respectively) according to the improved Hepple classification standards. Then normal cartilage areas of 20 cases were randomly selected as the normal control group. T1ρ values of cartilage in each group were measured and analyzed. The consistency of OLT typing results using conventional MRI and arthroscopy was compared.Results T1ρ images could clearly show ankle talus cartilage, and the colorific orders were different according to the degree of injuries. T1ρ values of cartilage increased with the aggravation of cartilage damage. There was no statistically difference (P=0.12) in T1ρ values of damaged cartilage of type Ⅰ injury group ([43.07±2.05]ms) and type Ⅱ injury group ([45.24±2.19]ms), whereas statistically differences of T1ρ values of damaged cartilage were found among other groups (P<0.05). The consistency of OLT typing results using conventional MRI and arthroscopy was good (Kappa=0.80, P<0.01).Conclusion T1ρ technique can clearly display the talus cartilage of the ankle joint and quantitatively evaluate the degree of talus cartilage damage, especially for patients with early talus cartilage damage.
查看全文  查看/发表评论  下载PDF阅读器