LocaLisa:一种用于实时3维定位正规心内电极的新技术
F H Wittkampf1, E F Wever, R Derksen
1Heart Lung Institute, Department of Cardiology, University Hospital Utrecht, Utrecht, The Netherlands. fredwittkampf@compuserve.com
Circulation
|March 17, 1999
概括
一种新技术为心脏切除提供了准确的实时3D电极定位. 这种方法可以确保精确的病变模式,而不会影响电图质量,从而改善复杂的心律失常治疗.
科学领域:
- 电子生理学 电子生理学
- 医疗成像医学成像
- 生物医学工程 生物医学工程
背景情况:
- 目前使用光镜的3D电极定位不足以在复杂的心律失常中创建系统性损伤模式.
- 精确的电极定位对于有效治疗心律失常基质至关重要.
研究的目的:
- 开发和验证一种新的技术,用于在线实时3D定位心内电极.
- 评估这种新的定位方法在心脏映射和切除中的准确性,可重现性和适用性.
主要方法:
- 使用普通导管电极作为皮肤电极产生的高频跨胸部电场中的传感器.
- 通过比较测量和真实电极间距离,研究了右心室,右心室和左心室的定位精度.
- 通过在切除前和切除后定位His束来评估长期稳定性,证实对电图记录没有影响.
主要成果:
- 在所有心脏腔室中,测量和真实电极位置 (相关系数> 0.996) 之间显示出高度线性关系.
- 实现了优于2mm的定位精度,缩放误差在8%至14%之间.
- 在2小时后显示了His束本地化 (1.4+/-1.1毫米) 的高可重现性.
结论:
- 开发的技术为心脏手术提供了准确和可重现的实时3D电极定位.
- 这种方法与标准的电极导管兼容,不损害电图质量.
- 能够提高复杂心律失常的心脏映射和废除的精度.
相关概念视频
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Definition
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Parts of an ECG
An ECG utilizes electrodes on the skin to...
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Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
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