Human MCG measurements with a high-sensitivity potassium atomic magnetometer

被引：46

作者：

Kamada, K. ^{[1
]}

Ito, Y. ^{[1
,2
]}

Kobayashi, T. ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Nishikyo Ku, Kyoto 6158510, Japan

[2] Kyoto Univ, Ctr Promot Interdisciplinary Educ & Res, Adv Biomed Engn Res Unit, Kyoto 6068501, Japan

来源：

PHYSIOLOGICAL MEASUREMENT | 2012年 / 33卷 / 06期

关键词：

atomic magnetometer; biomagnetic measurement; magnetocardiograms (MCGs);

D O I：

10.1088/0967-3334/33/6/1063

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Measuring biomagnetic fields, such as magnetocardiograms (MCGs), is important for investigating biological functions. To address to this need, we developed an optically pumped atomic magnetometer. In this study, human MCGs were acquired using a potassium atomic magnetometer without any modulating systems. The sensitivity of the magnetometer is comparable to that of high-T-c superconducting quantum interference devices (SQUIDs) and is sufficient for acquiring human MCGs. The activity of a human heart estimated from the MCG maps agrees well with that measured with SQUID magnetometers. Thus, our magnetometer produces reliable results, which demonstrate the potential of our atomic magnetometer for biomagnetic measurements.

引用

页码：1063 / 1071

页数：9

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