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在健康的旅行志愿者中评估心脏2D流MRI可靠性,跨越各种生理,技术和观察者混因素

Ralf F Trauzeddel^1,2,3,4, Thomas H Grandy⁵, Elias Daud^1,2,3,6

¹ECRC Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.

Radiology. Cardiothoracic imaging

|January 8, 2026

概括

阶段对比的二维 (2D) 流动心脏MRI显示出前向流量体积和峰值速度测量的出色可重复性和可重复性. 这项验证证实了心脏MRI研究中的各种技术和观察因素的可靠性.

科学领域:

心血管成像 - 心血管成像
磁共振成像技术磁共振成像技术
医学物理医学物理

背景情况:

阶段对比心脏MRI对于量化血液流动动态至关重要.
评估二维 (2D) 流动心脏MRI的可靠性对于临床应用至关重要.
了解技术和生理因素对测量精度的影响至关重要.

研究的目的:

评估二维流动心脏MRI测量的可重复性和可重复性.
研究生理学,技术和观察者变异对测量准确性的影响.
将二维流动心脏MRI与四维 (4D) 流动心脏MRI进行比较.

主要方法:

一项前性观察性研究,涉及四个MRI站点 (1.5-T和3-T) 的20名健康志愿者.
使用分段梯度回声和实时序列与扫描复扫检查.
评估可重复性,可重复性,序列/场强度效应,以及使用类内相关系数 (ICC) 的观察者间一致性.

主要成果:

优异的序列重复性 (ICC > 0.96) 和扫描-重新扫描可重复性 (ICC > 0.90) 对于向前流量 (FF) 和峰值速度 (PV).
在不同序列类型,场强度和扫描仪配置 (ICC > 0.91) 中,FF的高度一致性.
2D和4D流动心脏MRI之间的FF (ICC> 0.93) 和PV (ICC> 0.76) 的中等相关性很好或很好.

结论:

2D流动心脏MRI为FF提供高度可重复的测量,并为PV提供良好的一致性.
测量结果在不同的序列,场强度和观察者之间显示出可靠性.
生理和技术混因素对2D流动心脏MRI测量的精度的影响最小.

关键词:

2D 流动心脏MRI 磁力共振 4D流动心脏核磁共振心脏磁力共振成像 (MRI)阶段对比核磁共振成像 (MRI) 是一种相对比的功能.后期处理后期处理可靠性可靠性可靠性旅行志愿者旅行志愿者验证验证验证验证

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