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Content Provider | IEEE Xplore Digital Library |
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Author | Oida, T. Kawamura, Y. Kobayashi, T. |
Copyright Year | 1965 |
Abstract | An ultra-low field (ULF) magnetic resonance imaging (MRI) system with an optically pumped atomic magnetometer (AM) has recently been proposed. Because AM does not require cryogenic cooling, it can easily measure extremely small magnetic fields. However, to measure magnetic resonance (MR) signals with high sensitivity in ULF-MRI systems with AMs, the resonant frequencies of the sample and alkali metal in the AM must be same. To satisfy this requirement, a flux transformer (FT) has been proposed to detect MR signals. In this study, the simulations in the output coil of the FT and pseudo-MR signal measurements were performed to improve the signal-to-noise ratio (SNR) in the remote detection of MR signals by using AM with FT. The simulations and measurement results indicate that, to improve the SNR of the detector, the output coil of the FT should be placed in the vicinity of a glass cell, and the number of turns and radius of the output coil need to be optimized. |
Sponsorship | IEEE Magnetics Society |
Starting Page | 3074 |
Ending Page | 3077 |
Page Count | 4 |
File Size | 573299 |
File Format | |
ISSN | 00189464 |
Volume Number | 47 |
Issue Number | 10 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-10-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Coils Signal to noise ratio Magnetic resonance imaging Magnetometers Magnetic flux Detectors Glass ultra-low field (ULF) magnetic resonance imaging (MRI) Flux transformer (FT) nuclear magnetic resonance (NMR) optically pumped atomic magnetometer |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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