A superconducting quantum interference device magnetometer with a room-temperature pickup coil for measuring impedance magnetocardiograms

被引：17

作者：

Kandori, A ^{[1
]}

Suzuki, D ^{[1
]}

Yokosawa, K ^{[1
]}

Tsukamoto, A ^{[1
]}

Miyashita, T ^{[1
]}

Tsukada, K ^{[1
]}

Takagi, K ^{[1
]}

机构：

[1] Hitachi Ltd, Cent Res Lab, Kokubunji, Tokyo 1858601, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2002年 / 41卷 / 2A期

关键词：

SQUID; magnetometer; impedance-magnetocardiogram; pickup-coil; flux transformer;

D O I：

10.1143/JJAP.41.596

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To measure an impedance magnetocardiogram (I-MCG) signal, we have developed a superconducting quantum interference device (SQUID) magnetometer with a room-temperature pickup coil. The pickup coil (30-mm diameter) is set outside the cryostat and is connected to the input coil in the SQUID. The noise level of the magnetometer is 90 fT Hz(-1/2) at 10 kHz. Using the magnetometer, we measured I-MCG signals (below 15 pT)-which were obtained by applying an ac current (10 kHz) with constant amplitude (7 mA, peak-to-peak) to a subject-from the heart.

引用

页码：596 / 599

页数：4

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