| Presentation | 2011-01-24 Development of ultra-low field MRI system using HTS-rf-SQUID Shohei FUKUMOTO, Yukihiro KATSU, Miho SUZUKI, Ryosuke MORITA, Yusuke NAGANUMA, Yoshimi HATSUKADE, Saburo TANAKA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this study, we constructed a ultra-low field (ULF) NMR/MRI system employing a high-temperature superconductor (HTS)-rf-SQUID magnetometer and room-temperature coils. In the system, we employed a pulsed polarizing field B_p of approximately 30 mT perpendicular to a measurement field B_m of approximately 45 μT. We measured the ^1H-NMR signals for water and mineral oil and found a clear difference in their signal amplitudes. The longitudinal relaxation times T_1 of water and the oil were also estimated by changing the polarizing time of B_p. By applying a field gradient dB_z/dz of approximately 10 nT/cm to a sample, which was designed to contain water in two compartments, a ^1H-NMR spectrum with two peaks was observed. The frequency difference between the two peaks roughly corresponded to the distance between each center of the water in the two parts. From these results, it was suggested that ^1H and T_1-weighted contrast imaging will be realized by this system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HTS-rf-SQUID / MRI / NMR / Ultra-low field |
| Paper # | SCE2010-38 |
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| Committee | SCE |
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| Conference Date | 2011/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Superconductive Electronics (SCE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of ultra-low field MRI system using HTS-rf-SQUID |
| Sub Title (in English) | |
| Keyword(1) | HTS-rf-SQUID |
| Keyword(2) | MRI |
| Keyword(3) | NMR |
| Keyword(4) | Ultra-low field |
| 1st Author's Name | Shohei FUKUMOTO |
| 1st Author's Affiliation | Toyohashi University of Technology() |
| 2nd Author's Name | Yukihiro KATSU |
| 2nd Author's Affiliation | Toyohashi University of Technology |
| 3rd Author's Name | Miho SUZUKI |
| 3rd Author's Affiliation | Toyohashi University of Technology |
| 4th Author's Name | Ryosuke MORITA |
| 4th Author's Affiliation | Toyohashi University of Technology |
| 5th Author's Name | Yusuke NAGANUMA |
| 5th Author's Affiliation | Toyohashi University of Technology |
| 6th Author's Name | Yoshimi HATSUKADE |
| 6th Author's Affiliation | Toyohashi University of Technology |
| 7th Author's Name | Saburo TANAKA |
| 7th Author's Affiliation | Toyohashi University of Technology |
| Date | 2011-01-24 |
| Paper # | SCE2010-38 |
| Volume (vol) | vol.110 |
| Number (no) | 385 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |