| Presentation | 2012-01-26 Development of ultra-low field MRI system using HTS-rf-SQUID and permanent magnet Shohei FUKUMOTO, Shingo TSUNAKI, Hayaki MURATA, Takumi CHIGASAKI, Yoshimi HATSUKADE, Saburo TANAKA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have constructed an ultra-low field NMR/MRI system using an HTS-rf-SQUID and room-temperature electromagnets. In this study, we introduced a permanent magnet of 270mT instead of the electromagnet for pre-polarization, in order to improve the signal to noise ratio (S/N) of the system. In addition, we constructed an instrument to transfer the magnetized sample from the permanent magnet to under the SQUID about 1.5 m away from the permanent magnet in about 0.5 s. Then, an AC pulse field coil to apply a π/2 pulse after the sample transfer was introduced to measure a free induction decay signal from the sample. By this system, we obtained a NMR signal from a tap water of 10 ml sample. The S/N of the NMR spectrum was about 100, which was 10 times larger than that obtained with the previous system using the electromagnet of 32mT. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HTS-rf-SQUID / NMR / MRI / Ultra-low field / Permanent magnet / Sample transfer |
| Paper # | SCE2011-20 |
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| Committee | SCE |
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| Conference Date | 2012/1/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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 and permanent magnet |
| Sub Title (in English) | |
| Keyword(1) | HTS-rf-SQUID |
| Keyword(2) | NMR |
| Keyword(3) | MRI |
| Keyword(4) | Ultra-low field |
| Keyword(5) | Permanent magnet |
| Keyword(6) | Sample transfer |
| 1st Author's Name | Shohei FUKUMOTO |
| 1st Author's Affiliation | Toyohashi University of Technology() |
| 2nd Author's Name | Shingo TSUNAKI |
| 2nd Author's Affiliation | Toyohashi University of Technology |
| 3rd Author's Name | Hayaki MURATA |
| 3rd Author's Affiliation | Toyohashi University of Technology |
| 4th Author's Name | Takumi CHIGASAKI |
| 4th Author's Affiliation | Toyohashi University of Technology |
| 5th Author's Name | Yoshimi HATSUKADE |
| 5th Author's Affiliation | Toyohashi University of Technology |
| 6th Author's Name | Saburo TANAKA |
| 6th Author's Affiliation | Toyohashi University of Technology |
| Date | 2012-01-26 |
| Paper # | SCE2011-20 |
| Volume (vol) | vol.111 |
| Number (no) | 418 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |