标准化定量肌肉MRI:健康成年人的供应商间评估
Johanna Thomä1,2, Lionel Butry1,2, Martijn Froeling3
1Department of Neurology, BG-University Hospital Bergmannsheil, Ruhr-University Bochum, 44789, Bochum, Germany.
Magma (New York, N.Y.)
|February 12, 2026
概括
定量肌肉MRI (qMRI) 在健康受试者中显示出良好的可重现性. 然而,制造商之间的显著差异需要对多中心研究进行校正.
科学领域:
- 医疗成像医学成像
- 神经学 神经学
- 生物物理学的生物物理.
背景情况:
- 定量肌肉MRI (qMRI) 对于检测神经肌肉疾病 (NMD) 的肌肉变化至关重要.
- 多中心研究对于罕见的NMD研究至关重要,需要不同MRI供应商的可比数据.
- 在qMRI参数中,与制造商相关的变异性仍未得到充分研究.
研究的目的:
- 评估 qMRI 参数在健康受试者的供应商间可重复性.
- 评估qMRI测量中的与制造商相关的变异性.
- 为多中心NMD研究的数据协调提供信息.
主要方法:
- 十名健康的志愿者在一周内在西门子和飞利浦3T系统上接受了QMRI.
- 使用迪克森 (脂肪分数,FF),T2映射 (水T2,wT2) 和扩散权重成像 (FA,MD,RD,λ1) 分析了12个腿部肌肉.
- 通过ICC,变化系数,t测试和布兰德-阿尔特曼分析评估可重复性.
主要成果:
- 大多数qMRI参数显示出中度至优异的可重现性 (例如,ICCFF=0.923,ICCwT2=0.792).
- 轴的扩散性 (λ1) 显示出不良的可复制性 (ICC=0.361).
- 在所有参数中观察到显著的供应商间差异 (p<0.05),偏差从3.6% (FA) 到44.2% (FF).
结论:
- qMRI参数通常可以在健康的志愿者中复制.
- 绝对的qMRI值在制造商之间有很大的差异,需要纠正以准确地汇集数据.
- 解决与制造商相关的差异对于可靠的多中心和纵向NMD研究至关重要.
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