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| Presentation | 2015-12-19 09:25 On the imaging strategy of T1 weighted image using compressed sensing in ultra-low field MRI Kazuhiro Tamiwa, Takenori Oida, Tetsuo Kobayashi (Kyoto Univ.)  MBE2015-79 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In recent years, ultra-low field MRI (ULF-MRI) has attracted wide attention. Although the ULF-MRI has a disadvantage that readout time extends according to its narrow bandwidth, it has an advantage enabling to increase T1 contrast. In the ULF-MRI, prepolarized magnetic field is commonly utilized to increase the MR signals. However, the prepolarized magnetic field is more inhomogeneous than static field, so that difference of T1 relaxation rate among tissues becomes small. In this study, we propose an imaging strategy to obtain high contrast T1-weighted images without the prepolarized magnetic field by increasing the number of phase encoding steps combining with compressed sensing. The simulation results of the reconstruction showed that proposed strategy enable to obtain T1-weighted images by shortening readout time by increasing the number of phase encoding steps. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | ultra-low field MRI / compressed sensing / acquisition time reduction / T1-weighted image / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 383, MBE2015-79, pp. 95-100, Dec. 2015. | |
| Paper # | MBE2015-79 | |
| Date of Issue | 2015-12-12 (MBE) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | MBE2015-79 |
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| Conference Information | |
| Committee | MBE NC |
| Conference Date | 2015-12-19 - 2015-12-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | MBE |
| Conference Code | 2015-12-MBE-NC |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On the imaging strategy of T1 weighted image using compressed sensing in ultra-low field MRI |
| Sub Title (in English) | |
| Keyword(1) | ultra-low field MRI |
| Keyword(2) | compressed sensing |
| Keyword(3) | acquisition time reduction |
| Keyword(4) | T1-weighted image |
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| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Kazuhiro Tamiwa |
| 1st Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 2nd Author's Name | Takenori Oida |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Tetsuo Kobayashi |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
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| Speaker | Author-1 |
| Date Time | 2015-12-19 09:25:00 |
| Presentation Time | 25 minutes |
| Registration for | MBE |
| Paper # | MBE2015-79 |
| Volume (vol) | vol.115 |
| Number (no) | no.383 |
| Page | pp.95-100 |
| #Pages | 6 |
| Date of Issue | 2015-12-12 (MBE) |
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