机电波成像与心电图像:非侵入性心室激活映射方式的直接比较
Johanna B Tonko1,2, Melina Tourni3, Aikaterini Afentouli4
1Institute for Cardiovascular Science University College London, 5 University Street, London, UK.
概括
电机波成像 (EWI) 和心电图像 (ECGI) 能够准确地确定心室心律失常 (VA) 的起源. EWI擅长确定外观源,而ECGI有效地绘制多焦点VA的地图.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 电子生理学 电子生理学
背景情况:
- 准确的非侵入性鉴定出发点 (SOO) 对于心室节律失常 (VA) 对于指导切除策略至关重要.
- 目前的成像技术在精确定位VA起源方面存在局限性.
研究的目的:
- 为了比较基于超声波的机电波成像 (EWI) 和心电图成像 (ECGI) 在估计焦点VA或节奏图的解剖和轴向 (内脏与上心脏) SoO的空间精度.
- 用联系地图作为黄金标准进行比较.
主要方法:
- 在接受导管切除的患者身上进行了手术前的EWI和ECGI.
- 使用商业CT-ECGI系统,ECGI重建了上心脏激活图.
- EWI使用高率的胸前心电回声学与同时的心电图.
- 单极电图形态和率估计轴 SOO,与接触映射作为黄金标准.
主要成果:
- EWI和ECGI都在识别解剖学SoO方面表现出可比的准确性 (EWI:80%,ECGI:77.8%).
- 脑电图显示 septal 和 papillary 肌肉区域存在错误,而 EWI 在流出管和 RV 区域存在错误.
- 在77.1%的病例中,EWI准确地确定了超神经SOO,而ECGI无法可靠地实现这一能力.
结论:
- 在大多数情况下,EWI和ECGI都能定位VA的解剖学SOO,每个模式都有特定的优缺点.
- EWI提供了超模SOO的优质确定,这对于切除计划至关重要.
- 由于其全景,单击映射能力,ECGI在绘制多焦点或不频繁的VA方面提供了优势.
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