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使用定量心血管磁共振输液映射的诊断信心随着左心室覆盖率的增加而增加

Henrik Engblom¹, Ellen Ostenfeld¹, Marcus Carlsson¹

¹Clinical Physiology, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden.

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

|February 5, 2024

概括

使用每隔一心跳 (2RR) 进行定量心血管磁共振 (CMR) perfusion 映射,可与每次心跳 (1RR) 采集提供相似的结果. 将视图从3增加到6显著提高了检测心肌缺血的诊断信心.

科学领域:

心血管磁共振 (CMR) 是一种心血管磁共振技术.
心肌输血成像 - - 心肌输血成像
定量成像技术定量成像技术

背景情况:

心血管磁共振 (CMR) perfusion 影像 (3SAX/1RR) 中常规的 3 个短轴 (SAX) 视图不覆盖整个左心室 (LV),特别是顶部.
这种限制可能会影响定量心肌 perfusion (MP) 评估的准确性.

研究的目的:

为了评估3SAX输液图是否获得了其他每一个RR间隔 (2RR),提供了与1RR获取相似的定量MP测量.
为了确定是否获得3个额外的输液视图 (总共6个),每隔另一段RR间隔 (2RR) 增加了对压力诱导性缺血的诊断信心.

主要方法:

在287名怀疑患有缺血性心脏病的患者中,使用1.5TMRI扫描仪进行了定量MP评估.
使用3SAX/1RR,3SAX/2RR,3SAX + 3长轴 (LAX) / 2RR和6SAX/2RR协议获得数据.
对缺血的诊断信心使用利克尔特尺度得分.

主要成果:

在全球MP的3SAX/1RR和3SAX/2RR之间观察到强烈的相关性 (R=0.99).
与3个视图 (p < 0.001) 相比,随着3个视图的添加,诊断信心显著增加 (总共有6个视图).
3SAX+3LAX/2RR和6SAX/2RR协议都显示出诊断信心的显著改善.

结论:

使用2RR采样进行定量MP映射,可获得与1RR采样相似的结果,从而实现扩展视图采集.
通过增加视图来增加LV覆盖率,显著提高了对压力诱导性缺血的诊断信心.
未来的定量CMR输液协议应该旨在增加LV覆盖范围,超出标准的3SAX视图.

关键词:

心血管磁共振是一种心血管磁共振.冠状动脉疾病是一种冠状动脉疾病.诊断的信心诊断的信心心肌输液是心肌输液.量化第一通 perfusion 的第一通 perfusion 的第一通 perfusion.

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