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Comparability of measurement results obtained with multi-SQUID-systems of different sensor configurations.

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Title: Comparability of measurement results obtained with multi-SQUID-systems of different sensor configurations.
Authors: Burghoff, M.1, Steinhoff, U., Haberkorn, W., Koch, H.
Source: IEEE Transactions on Applied Superconductivity. 1997, Vol. 7 Issue 2, p3465-3468. 4p.
Subjects: Superconducting quantum interference devices, Biomagnetism, Gravimeters (Geophysical instruments), Magnetic fields, Magnetic fields in the heart
Abstract: Currently several brands of multichannel SQUID-systems for application in biomagnetism are commercially available. However, these devices are widely differing in SQUID specifications, gradiometer construction, sensor configuration and other parameters. The distortion of temporal recordings of the magnetic field due to varying sensor constructions has been evaluated. Examples of cardiac measurements show clearly that such data differ from each other. Therefore, these data cannot directly be compared in multicentric clinical studies. This contribution presents a method for comparison of signals recorded with different sensor systems. This method transforms the recorded signals into signals of a reference system. The recorded signals are modeled by means of a multipole virtual generator, which is then used to compute the signals in the reference system. The efficiency of the algorithm is demonstrated for measurements of the heart magnetic field. [ABSTRACT FROM PUBLISHER]
Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Comparability of measurement results obtained with multi-SQUID-systems of different sensor configurations.
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  Data: <searchLink fieldCode="AR" term="%22Burghoff%2C+M%2E%22">Burghoff, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Steinhoff%2C+U%2E%22">Steinhoff, U.</searchLink><br /><searchLink fieldCode="AR" term="%22Haberkorn%2C+W%2E%22">Haberkorn, W.</searchLink><br /><searchLink fieldCode="AR" term="%22Koch%2C+H%2E%22">Koch, H.</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Superconducting+quantum+interference+devices%22">Superconducting quantum interference devices</searchLink><br /><searchLink fieldCode="DE" term="%22Biomagnetism%22">Biomagnetism</searchLink><br /><searchLink fieldCode="DE" term="%22Gravimeters+%28Geophysical+instruments%29%22">Gravimeters (Geophysical instruments)</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields+in+the+heart%22">Magnetic fields in the heart</searchLink>
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  Label: Abstract
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  Data: Currently several brands of multichannel SQUID-systems for application in biomagnetism are commercially available. However, these devices are widely differing in SQUID specifications, gradiometer construction, sensor configuration and other parameters. The distortion of temporal recordings of the magnetic field due to varying sensor constructions has been evaluated. Examples of cardiac measurements show clearly that such data differ from each other. Therefore, these data cannot directly be compared in multicentric clinical studies. This contribution presents a method for comparison of signals recorded with different sensor systems. This method transforms the recorded signals into signals of a reference system. The recorded signals are modeled by means of a multipole virtual generator, which is then used to compute the signals in the reference system. The efficiency of the algorithm is demonstrated for measurements of the heart magnetic field. [ABSTRACT FROM PUBLISHER]
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  Data: <i>Copyright of IEEE Transactions on Applied Superconductivity is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/77.622136
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      – SubjectFull: Biomagnetism
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      – SubjectFull: Gravimeters (Geophysical instruments)
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      – SubjectFull: Magnetic fields
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      – SubjectFull: Magnetic fields in the heart
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      – TitleFull: Comparability of measurement results obtained with multi-SQUID-systems of different sensor configurations.
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              Text: 1997
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              Y: 1997
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