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在脏T₂映射的供应商之间MRI协调的改进使用刺激回声补偿

Hao Li^1,2, Alexander J Daniel³, Charlotte E Buchanan³

¹The Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China.

Journal of magnetic resonance imaging : JMRI

|February 21, 2024

概括

使用StimFit的刺激回声校正协调了MRI供应商的脏T2测量. 这种技术减少了变异,提高了T2绘图用于病评估的可靠性.

科学领域:

磁共振成像是一种磁共振成像技术.
腎病理生理學腎病理生理學
量化MRI是指数量化的MRI.

背景情况:

T2映射对于评估病病理生理学至关重要.
在T2测量的跨扫描仪和跨供应商变化需要校正方法.

研究的目的:

在不同MRI供应商平台上协调脏T2测量.
实施基于扩展相图的合适方法 (StimFit) 来进行刺激的回声校正和减少供应商之间的差异.

主要方法:

涉及健康志愿者和ISMRM/NIST幻影的前性研究.
使用了3T多回声旋回声序列.
应用了传统的单指数拟合和StimFit用于T2分析.
统计分析包括CV,混合效应模型,ANOVA,t测试和布兰德-阿尔特曼图.

主要成果:

斯蒂姆菲特显著降低了跨供应商的幻影T2测量的平均绝对百分比误差.
在体内,StimFit消除了供应商之间T2测量的显著差异.
对T2测量的中间供应商变化系数从8.0%降至2.6% (皮质) 和7.1%降至2.8% (骨髓).
在皮质和整个脏中,StimFit减少了T2分布的全宽度至最大半幅.

结论:

刺激回声校正有效地减少了MRI供应商平台的T2变化.
在脏应用中,StimFit提高了定量T2映射的一致性和可靠性.

关键词:

T2映射的映射 T2映射的映射的映射扩展相位图的扩展相位图.统一化和化统一化和化脏脏脏是什么?多声回旋回声多声回声刺激回声补偿刺激回声补偿

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