使用定量磁力共振成像 (MRI) 进行关节软骨厚度的形态评估,用于腿骨关节的骨关节
Aaron Dees1, Niccolo M Fiorentino1,2, Mickey Krug1
1Department of Orthopedics and Rehabilitation, McClure Musculoskeletal Research Center, Robert Larner College of Medicine, University of Vermont, Burlington, Burlington, Vermont, USA.
概括
定量MRI (qMRI) T1ρ序列可以准确测量膝关节关节软骨的厚度,与传统的形态MRI方法相匹配. 这允许同时评估软骨组成和厚度,有助于创伤后关节炎 (PTOA) 研究.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 整形外科 整形外科 整形外科
- 放射学 放射学是一门学科.
背景情况:
- 创伤后关节炎 (PTOA) 发生在膝盖受伤之后,例如前十字带 (ACL) 撕裂.
- 评估PTOA包括测量关节软骨形态 (厚度) 和矩阵组成.
- 目前的方法使用单独的MRI技术来测量厚度和组成,因此需要采用统一的方法.
研究的目的:
- 调查定量MRI (qMRI) 序列是否可以提供与形态MRI相比的软骨厚度测量.
- 探索单一MRI技术在同时评估软骨厚度和组成方面的潜力.
主要方法:
- 健康的参与者接受了他们的膝盖的三维 (3D) 核磁共振扫描,使用形态 (T1FFE) 和定量 (T1ρ,T2*) 序列.
- 从所有序列中通过手动细分生成关节软骨厚度图.
- 来自qMRI图的厚度测量与固定解剖点的形态图进行了比较.
主要成果:
- 对于软骨厚度,T1ρ qMRI 序列与 T1FFE 形态MRI 强烈一致 (在 11/12 个区域的 ICC > 0.8).
- 在T1ρ和T1FFE厚度测量之间观察到最小偏差.
- 与T1FFE相比,T2* qMRI序列显示出较低的一致性和显著偏差.
结论:
- T1ρ qMRI 序列能够同时获得膝关节关节软骨厚度的定量和形态可比测量.
- 这一发现支持使用T1ρ qMRI作为单次会议工具,用于在PTOA研究中全面评估膝关节软骨.
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