基于CMR的左心房应变用于预测无症状高血压患者的左心室透静功能障碍
Weiwei Liao1, Jianping Zhong1, Song Xu2
1Ganzhou Institute of Medical Imaging, Ganzhou Key Laboratory of Medical Imaging and Artificial Intelligence, Medical Imaging Center, Ganzhou People's Hospital, Ganzhou Hospital-Nanfang Hospital, Southern Medical University, Ganzhou, China.
Quantitative imaging in medicine and surgery
|December 10, 2025
概括
心脏磁共振特征追踪衍生的左心房应变有效地检测高血压患者的左心室扩张功能障碍. 这种非侵入性方法有助于在没有额外扫描的情况下评估左心房压升高.
科学领域:
- 心血管成像 - 心血管成像
- 心脏磁共振 (CMR) 是指心脏的磁共振.
- 透支功能障碍评估 透支功能障碍评估
背景情况:
- 左心室扩张性功能障碍 (LVDD) 在高血压 (HTN) 中很常见,并与心力衰竭与保留射出分数 (HFpEF) 相关.
- 标准的CMR协议缺乏对透气功能的血液动力学参数,限制了LVDD评估.
- CMR特征追踪 (CMR-FT) 为在亚临床HTN中评估左心房 (LA) 功能提供了一个潜在的解决方案.
研究的目的:
- 验证CMR-FT衍生的LA菌株作为检测LVDD的标志物,在HTN患者中检测左心脏压力升高 (LAP).
- 在不需要额外的扫描时间的情况下,提供CMR参数来评估透缩功能障碍.
主要方法:
- 对152名HTN患者和60名对照者的回顾性研究,包括心声学和CMR.
- 根据LVDD严重程度将HTN患者分为正常LAP和高LAP组.
- 使用CMR-FT量化LA菌株 (水库,管道,),进行统计比较和ROC分析以诊断性能.
主要成果:
- 与对照组相比,在HTN组中观察到LA储应变 (εs) 和导管应变 (εe) 的显著损害.
- 在高LAP组中,助推应变 (εa) 降低了.
- 拉维胺菌株参数,特别是 εs (截止值29.55%,AUC 0.896),有效地区分了高LAP;联合的 εs + LAVImin (AUC 0.919) 显示出更高的准确性.
结论:
- 来自CMR的LA菌株是一种强大的非侵入性标志物,用于识别HTN患者心脏功能障碍和高LAP的LVDD.
- 在临床CMR中,LA菌株和最小LA体积指数 (LAVmin) 显示为常规透气功能的评估具有前途.
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