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高效率,自由呼吸全胸部平衡阶段 bT1RESS MR血管学:初步临床经验

Robert R Edelman¹, Amit Pursnani², Kevin Lee²

¹NorthShore University HealthSystem, Evanston, IL; Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL.

Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance

|June 13, 2025

概括

这项研究引入了一种自由呼吸心血管成像技术,平衡阶段平衡T1放松增强稳定状态 (bT1RESS),在对比剂施用后很长时间后能够进行诊断质量扫描. 这种高效的方法可以进行全面的胸腔血管和心脏评估.

科学领域:

心血管成像 - 心血管成像
磁共振成像是一种磁共振成像技术.

背景情况:

由于图像质量恶化,传统的CTA和CEMRA受限于短的对比后扫描窗口.
平衡阶段平衡的T1放松增强稳定状态 (bT1RESS) 已先前开发用于屏息CEMRA,延长了有用的扫描时间.
实现了bT1RESS的自由呼吸版本,用于快速整胸成像.

研究的目的:

为了评估一个高效的,自由呼吸,导航门的全胸部 bT1RESS 序列用于心血管磁共振 (CMR) 成像.
评估bT1RESS的诊断质量和效率与标准后对比成像窗口相比.

主要方法:

34名患有心血管病症的患者接受了标准的CMR,再加上导航门的原型全胸 bT1RESS 序列.
bT1RESS序列使用了2x2或3x2的GRAPPA加速.
对图像质量和体积数据进行了评估,并对不同加速度因子和对比后时间进行了比较.

主要成果:

扫描时间的中位数为1.25分钟 (3x2加速) 和2.21分钟 (2x2加速).
血池与肌肉信号强度比在对比测试后>20分钟时是<5分钟时的88%.
在所有情况下,图像质量都很好或很好,心室和心房体积的相关性很高.

结论:

自由呼吸,导航器控制的bT1RESS是一种高效和有用的CMR技术.
诊断质量的扫描是可以实现的,无论对比后的时间,允许对胸腔血管和心脏的体积评估.
该技术的简短扫描和重建时间促进了将其集成到标准的CMR协议中,并有可能进行3D功能评估.

关键词:

平衡的T1放松增强稳定状态.一个心脏病患者的心脏病.电心电图 (ECG) 门均衡阶段是平衡阶段.基于加多的对比剂是基于加多的对比剂.伟大的船只伟大的船只通过MR血管造影进行MR血管造影.磁共振是一种磁共振.导航员门的导航员门.整个胸部 - 整个胸部

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