Ono K, Hosaka H, He B
R&D Center, Nihon Kohden Corporation, Tokyo, Japan.
Methods Inf Med. 1997 Dec;36(4-5):336-9.
The objective of this study is to evaluate the spatial resolution of body surface Laplacian maps (BSLMs) in localizing ventricular electrical activity by means of computer simulation. A 3-D computer heart-torso model was used to simulate cardiac electrical activity and the body surface maps. A two-site pacing protocol was used to generate two simultaneously activated myocardial events on the anterior epicardial wall and the anterior endocardial wall. Following the pacing, the BSLMs and the body surface potential maps (BSPMs) were calculated and compared with the known activation pattern. As a result, the BSLMs showed superior resolution than the BSPMs for localized initial ventricular activity. In summary, the present study suggests that body surface Laplacian mapping may provide a useful methodology for the clinical diagnosis of cardiac electrical abnormalities.
本研究的目的是通过计算机模拟评估体表拉普拉斯图（BSLMs）在定位心室电活动方面的空间分辨率。使用三维计算机心脏-躯干模型来模拟心脏电活动和体表图。采用双部位起搏方案在心脏前壁的心外膜和心内膜上同时产生两个激活的心肌事件。起搏后，计算BSLMs和体表电位图（BSPMs），并与已知的激活模式进行比较。结果表明，对于局部心室初始活动，BSLMs显示出比BSPMs更高的分辨率。总之，本研究表明体表拉普拉斯映射可能为心脏电异常的临床诊断提供一种有用的方法。
