A Mobile and Space-saving High-temperature Superconducting Multichannel Magnetocardiograph in a Vertical Magnetically Shielded Cylinder
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概要
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A high-temperature superconducting (HTS) magnetocardiographic system composed of 16-channels HTS-Superconducting Quantum Interference Device (SQUID) magnetometers and a vertical magnetically shielded cylinder has been developed. The cylinder is designed to save space and provide mobility for the entire system, including the magnetically shielded cylinder. It consists of two fixed semicircular shells and a sliding semicircular door, all of which are made from sheets of a flexible nanocrystalline soft-magnetic material. The cardiomagnetic field from a subject seated in the vertical magnetically shielded cylinder is measured by multichannel HTS-SQUID magnetometers that are sensitive to field strengths weaker than 100 fT/(Hz)1/2. The high signal-to-noise ratio of the magnetometer signals makes beat-to-beat measurement of the cardiomagnetic field possible. This HTS-based multichannel MCG system is being applied to medical applications such as the detection of arrhythmias and ischemic heart disease.
- 2004-01-15
著者
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Suzuki Daisuke
Central Research Laboratory Hitachi Ltd
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TSUKAMOTO Akira
Central Research Laboratory, Hitachi, Ltd.
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Yokosawa Koichi
Central Research Laboratory Hitachi Ltd.
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Tsukada Keiji
Central Research Laboratory Hitachi Ltd.
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Kandori Akihiko
Central Research Laboratory Hitachi Ltd.
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Ogata Kuniomi
Central Research Laboratory Hitachi Ltd
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Yokosawa Koichi
Central Research Laboratory, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan
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Ogata Kuniomi
Central Research Laboratory, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan
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