2021 ACR:可靠性如何?OMERACT膝关节炎症MRI评分系统

2021-11-27 MedSci原创 MedSci原创

目的是在多读者练习中测试KIMRISS与已建立的方法MOAKS进行比较的可行性、可靠性和响应性。

MRI上的骨髓病变(BML)和滑膜炎与骨关节炎(OA)的严重程度和进展独立相关。随机对照试验的目标是减少BML的大小和滑膜炎的程度以治疗OA。研究人员开发的OMERACT膝关节炎症MRI评分系统(KIMRISS),最近对其进行了改进,以最大限度地提高可靠性和对变化的敏感性。创新包括适用于触摸屏界面的定制设计的电子叠加层,用于评估连续矢状切片上500个子区域的BML、能直接在线评分的基于网络的界面以及正式阅读练习之前的实时迭代校准 (RETIC) 。该研究目的是在多读者练习中测试KIMRISS与已建立的方法MOAKS进行比较的可行性、可靠性和响应性。

KIMRISS合并了股骨、胫骨和髌骨中的每一个基于网络的图形叠加,以对连续矢状切片上500个子区域的BML进行评分。S-E为所有连续矢状切片上流体信号的最大直径(评分范围 0-100)。所有分数按标准化数量的MRI切片按比例计算。在KIMRIISS预读练习中,读者对RETIC模块进行评分使达到熟练程度(定义为ICC0.80BML S-E状态和变化评分≥0.70)。为MOAKS开发了一个新的基于网络的评分平台,该平台具有指定用于评分BML子区域的叠加层。研究者比较了在2项国际多读者练习中,骨关节炎倡议研究中患者的基线和1年后MRI扫描中BMLSE状态和变化评分的可靠性:A. 4 名专家和一名OMERACT研究员对38MOAKS BML评分≥1的病例进行评分。B. 8 位专家和一位OMERACT研究员为MOAKS BML3Kellgren-Lawrence (KL)等级< 3 60个案例评分。通过类内相关系数(ICC)和最小可检测变化(SDC)评估可靠性、标准化响应平均值(SRM)评估响应性,以及使用系统可用性量表(SUS,评分范围 0-100)评估可行性

对于练习A/B,受试者为55.3%/26.7%男性,平均年龄(±SD) 61.7(±9.1)/61.9(8.8) 岁,39.4%/100%中的放射学K-L等级≤2。两种练习的变化都很小(KIMRISSMOAKS BMLS-E的评分范围小于5%),反应能力相当。尽管如此,BMLS-E的改变ICC始终是“好”到“非常好”,并且KIMRIISS始终更好,SDC作为评分范围的百分比较低WOMAC基线疼痛评分与KIMRISSMOAKS基线BML S-E评分之间存在显著相关性WOMAC变化与KIMRISSMOAKS BML变化之间具有相关性。 KIMRISS的平均SUS得分为88.2MOAKS的平均SUS得分为54.3

MOAKS相比,用于BML和滑膜炎-积液评分的KIMRISS方法在可行性方面得分很高,并且表现出始终如一的高可靠性。对于BMLS-E,这两种方法都可以证明与WOMAC疼痛的相关性。MRI特征变化大于OAI数据集的情况下,需要进一步验证响应性。

原始出处

Maksymowych W, Jaremko J, Pedersen S, Eshed I, Weber U, Bird P, McReynolds A, Wichuk S, Paschke J, Lambert R. The OMERACT Knee Inflammation MRI Scoring System: Validation of Quantitative Methodologies and Tri-compartmental Overlays by Comparison with the MRI Osteoarthritis Knee Score [abstract]. Arthritis Rheumatol. 2021; 73 (suppl 10).

 

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    2021-11-29 lmm397
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    2021-11-29 10518094zz
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