| Presentation | 2017-12-16 0.3T低磁場MRIにおける機能的結合の直接計測に向けたスピンロック撮像法 Hiroaki Seki, Hiroyuki Ueda, Yosuke Ito, Takenori Oida, Yo Taniguchi, Tetsuo Kobayashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, to study human higher brain functions, functional magnetic resonance imaging (fMRI) , based on Blood-Oxygenation-Level-Dependen (BOLD) effect, is widely used. However, its temporal resolution is not sufficient, since it detects hemodynamic changes following neural activities. Spin-lock sequence has been studied as an alternative fMRI to directly detect neural magnetic fields as MR signal attenuation due to magnetic resonance. We examined the spin-lock sequence by phantom experiments using 0.3 T MRI measuring magnetic fields generated from a dipole electrode in a biological phantom and studied influence of the initial phase of the measured magnetic fields on the magnetization using a 0.3 T MRI scanner. Consequently, we demonstrate the feasibility of measurement of neural functional connectivity with low-field MRI. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | functional Magnetic Resonance Imaging / low-field MRI / Bloch equation / spin-lock sequence |
| Paper # | MBE2017-63 |
| Date of Issue | 2017-12-09 (MBE) |
| Conference Information | |
| Committee | MBE / NC |
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| Conference Date | 2017/12/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | ME, general |
| Chair | Kazuki Nakajima(Univ. of Toyama) / Masafumi Hagiwara(Keio Univ.) |
| Vice Chair | Masaki Kyoso(TCU) / Yutaka Hirata(Chubu Univ.) |
| Secretary | Masaki Kyoso(Toyama Pref. Univ.) / Yutaka Hirata(Kindai Univ.) |
| Assistant | Kim Juhyon(Univ. of Toyama) / Takumi Kobayashi(YNU) / Yoshihisa Shinozawa(Keio Univ.) / Keiichiro Inagaki(Chubu Univ.) |
| Paper Information | |
| Registration To | Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing |
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| Language | JPN-ONLY |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | |
| Sub Title (in English) | * |
| Keyword(1) | functional Magnetic Resonance Imaging |
| Keyword(2) | low-field MRI |
| Keyword(3) | Bloch equation |
| Keyword(4) | spin-lock sequence |
| 1st Author's Name | Hiroaki Seki |
| 1st Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 2nd Author's Name | Hiroyuki Ueda |
| 2nd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 3rd Author's Name | Yosuke Ito |
| 3rd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 4th Author's Name | Takenori Oida |
| 4th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 5th Author's Name | Yo Taniguchi |
| 5th Author's Affiliation | Hitachi(Hitachi) |
| 6th Author's Name | Tetsuo Kobayashi |
| 6th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2017-12-16 |
| Paper # | MBE2017-63 |
| Volume (vol) | vol.117 |
| Number (no) | MBE-360 |
| Page | pp.pp.55-60(MBE), |
| #Pages | 6 |
| Date of Issue | 2017-12-09 (MBE) |