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Improvement of Ultr...
Improvement of Ultra-Low Field Magnetic Resonance Recordings With a Multilayer Flux-Transformer-Based High-T-C SQUID Magnetometer
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- Chukharkin Leonidovich, Maxim, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Kalaboukhov, Alexei, 1975 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Schneiderman, Justin F., 1979 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för neurovetenskap och fysiologi,Institute of Neuroscience and Physiology,University of Gothenburg
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- Öisjöen, Fredrik, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jönsson, Magnus J, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Xie, Minshu, 1988 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Snigirev, O. V. (author)
- M. V. Lomonosov Moscow State University
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- Winkler, Dag, 1957 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2013
- 2013
- English.
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In: Ieee Transactions on Applied Superconductivity. - : Institute of Electrical and Electronics Engineers (IEEE). - 1051-8223 .- 1558-2515. ; 23:3
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Abstract
Subject headings
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- We have developed a multilayer flux-transformer-based high-T-C SQUID (flip-chip) magnetometer that improves signal-to-noise-ratios (SNR) in ultra-low field magnetic resonance (ulf-MR) recordings of protons in water. Direct ulf-MR-based benchmarking of the flip-chip versus a standard planar high-T-C SQUID magnetometer resulted in improvement of the SNR by a factor of 2. This gain is attributable to the improved transformation coefficient (1.9 vs 5.3 nT/Phi(0)) that increased the signal available to the flip-chip sensor and to the lower noise at the measurement frequency (15 vs 25 fT/Hz(1/2) at 4 kHz). The improved SNR can lead to better spectroscopic resolution, lower imaging times, and higher resolution in ulf-MR imaging systems based on high-T-C SQUID technology. The experimental details of the sensors, calibration, and ulf-MR benchmarking are presented in this report.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Keyword
- Flip-chip
- high temperature superconductors
- nuclear magnetic resonance
- SQUIDs
- superconducting
- nuclear magnetic resonance
Publication and Content Type
- ref (subject category)
- art (subject category)
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