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使用商用0.55T扫描仪进行心脏影像核磁共振

Martin Segeroth¹, David J Winkel¹, Jan Vosshenrich¹

¹From the Department of Radiology (M.S., D.J.W., J.V., H.C.B., J.B., F.S., M.P.) and Clinic of Cardiology (P.H., M.J.Z.), University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland; and Magnetic Resonance, Siemens Healthcare, Erlangen, Germany (D.G.).

Radiology. Cardiothoracic imaging

|July 11, 2024

概括

低场0.55-T心脏电影MRI提供与1.5-T扫描仪相比较的双心室体积和功能结果. 这项比较研究证实0.55-TMRI是心血管MRI的可行替代品,特别是当获取时间被调整时.

科学领域:

心血管成像 - 心血管成像
磁共振成像 (MRI) 是一种磁共振成像技术.
评估心脏功能的评估

背景情况:

标准的心脏电影MRI使用1.5-T扫描仪来评估左心室 (LV) 和右心室 (RV) 功能.
低强度磁场MRI扫描仪 (0.55 T) 在可访问性和成本方面具有潜在的优势,但需要对定量心脏分析进行验证.

研究的目的:

为了比较从0.55T低场心脏影像核磁共振扫描仪与标准的1.5T扫描仪中得出的定量双心室体积和功能参数.
评估0.55-T心脏MRI的诊断等价性,用于临床心血管评估.

主要方法:

这是一项前性研究,涉及健康的志愿者和患者,他们在0.55T和1.5TMRI扫描仪上接受同一天的影像成像.
两位独立的阅读专家评估了体积和功能参数.
数据分析包括布兰德-阿尔特曼图表,以可视化协议,并计算两个系统之间的平均相关性和偏差.

主要成果:

在健康志愿者和患者的0.55-T和1.5-T系统之间观察到非常强的平均相关性 (r = 0.98).
LV和RV参数的平均偏差很小,志愿者报告为1.6%,患者报告为1.1%,表明高度一致.
通过0.55-T扫描仪实现了可比量的双心膜体积和功能参数,前提是获得时间翻了一番.

结论:

用0.55T低场扫描仪进行的心脏影像核磁共振 (MRI) 的结果与用1.5T扫描仪获得的双心室参数结果相似.
0.55-T系统显示出高可靠性和一致性,用于对心脏功能和体积的定量评估.
0.55-T心脏MRI是用于心血管成像的1.5TMRI的可行的替代方案,需要仔细考虑采集协议.

关键词:

一个心脏病患者的心脏病.心血管核磁共振 (MRI) 是一种心血管核磁共振.电影电影电影电影电影进行比较研究.心灵心灵心灵心灵心灵心灵在心肌中,心肌.

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