Magnetic sensors using amorphous metal materials: detection of premature ventricular magnetic waves.
Magnetic sensors using amorphous metal materials: detection of premature ventricular magnetic waves.
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DOI：
10.1002/phy2.30
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发表时间：
2013-07
影响因子：
2.5
通讯作者：
Nakayama, Shinsuke
中科院分区：
文献类型：
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作者：
Uchiyama, Tsuyoshi;Nakayama, Shinsuke
磁活动的检测使得能够非接触和非侵入性地评估人类的电活动。我们回顾了使用非晶态金属线基磁性传感器检测生物磁场的研究进展，传感器的灵敏度为皮特斯拉(PT)级。我们测量了一名坐在椅子上的健康受试者胸壁附近的磁场。磁传感头垂直安装在胸壁上。与心电图同步测量表明，磁场的变化与心电活动同步，反映心房和心室电活动的磁波模式也发生了变化，尽管变化很大。此外，在同一健康受试者中也记录到反映室性心律失常的磁波。这些结果表明，该磁传感器技术适用于人体生理学和病理生理学研究。我们还讨论了非晶丝基磁传感器的未来应用以及可能的改进。
The detection of magnetic activity enables noncontact and noninvasive evaluation of electrical activity in humans. We review the detection of biomagnetic fields using amorphous metal wire-based magnetic sensors with the sensitivity of a pico-Tesla (pT) level. We measured magnetic fields close to the thoracic wall in a healthy subject sitting on a chair. The magnetic sensor head was mounted perpendicularly against the thoracic wall. Simultaneous measurements with ECG showed that changes in the magnetic field were synchronized with the cardiac electric activity, and that the magnetic wave pattern changed reflecting electrical activity of the atrium and ventricle, despite a large variation. Furthermore, magnetic waves reflecting ventricular arrhythmia were recorded in the same healthy subject. These results suggest that this magnetic sensor technology is applicable to human physiology and pathophysiology research. We also discuss future applications of amorphous wire-based magnetic sensors as well as possible improvements.