Fenici Riccardo, Brisinda Donatella, Meloni Anna Maria
Clinical Physiology - Biomagnetism Center, Catholic University of Sacred Heart, Rome, Italy.
Expert Rev Mol Diagn. 2005 May;5(3):291-313. doi: 10.1586/14737159.5.3.291.
Magnetocardiography is a noninvasive contactless method to measure the magnetic field generated by the same ionic currents that create the electrocardiogram. The time course of magnetocardiographic and electrocardiographic signals are similar. However, compared with surface potential recordings, multichannel magnetocardiographic mapping (MMCG) is a faster and contactless method for 3D imaging and localization of cardiac electrophysiologic phenomena with higher spatial and temporal resolution. For more than a decade, MMCG has been mostly confined to magnetically shielded rooms and considered to be at most an interesting matter for research activity. Nevertheless, an increasing number of papers have documented that magnetocardiography can also be useful to improve diagnostic accuracy. Most recently, the development of standardized instrumentations for unshielded MMCG, and its ease of use and reliability even in emergency rooms has triggered a new interest from clinicians for magnetocardiography, leading to several new installations of unshielded systems worldwide. In this review, clinical applications of magnetocardiography are summarized, focusing on major milestones, recent results of multicenter clinical trials and indicators of future developments.
心磁图描记术是一种非侵入性的非接触式方法，用于测量由产生心电图的相同离子电流所产生的磁场。心磁图和心电图信号的时间进程相似。然而，与表面电位记录相比，多通道心磁图测绘（MMCG）是一种用于心脏电生理现象三维成像和定位的更快且非接触式的方法，具有更高的空间和时间分辨率。十多年来，MMCG大多局限于磁屏蔽室，并且最多被认为是研究活动中一个有趣的课题。然而，越来越多的论文证明心磁图描记术对于提高诊断准确性也很有用。最近，用于非屏蔽MMCG的标准化仪器的开发，以及其在急诊室的易用性和可靠性，引发了临床医生对心磁图描记术的新兴趣，导致全球范围内有多个非屏蔽系统的新安装。在这篇综述中，总结了心磁图描记术的临床应用，重点关注主要里程碑、多中心临床试验的最新结果以及未来发展指标。
