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Paper Abstract and Keywords
Presentation 2012-01-26 10:55
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 (TUT) SCE2011-20
Abstract (in Japanese) (See Japanese page) 
(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 270 mT 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 $\pi$/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 32 mT.
Keyword (in Japanese) (See Japanese page) 
(in English) HTS-rf-SQUID / NMR / MRI / Ultra-low field / Permanent magnet / Sample transfer / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 418, SCE2011-20, pp. 7-10, Jan. 2012.
Paper # SCE2011-20 
Date of Issue 2012-01-19 (SCE) 
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 SCE2011-20

Conference Information
Committee SCE  
Conference Date 2012-01-26 - 2012-01-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. B3-2 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Superconducting sensing technologies and their applications, etc. 
Paper Information
Registration To SCE 
Conference Code 2012-01-SCE 
Language Japanese 
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  
Keyword(7)  
Keyword(8)  
1st Author's Name Shohei Fukumoto  
1st Author's Affiliation Toyohashi University of Technology (TUT)
2nd Author's Name Shingo Tsunaki  
2nd Author's Affiliation Toyohashi University of Technology (TUT)
3rd Author's Name Hayaki Murata  
3rd Author's Affiliation Toyohashi University of Technology (TUT)
4th Author's Name Takumi Chigasaki  
4th Author's Affiliation Toyohashi University of Technology (TUT)
5th Author's Name Yoshimi Hatsukade  
5th Author's Affiliation Toyohashi University of Technology (TUT)
6th Author's Name Saburo Tanaka  
6th Author's Affiliation Toyohashi University of Technology (TUT)
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Speaker Author-1 
Date Time 2012-01-26 10:55:00 
Presentation Time 25 minutes 
Registration for SCE 
Paper # SCE2011-20 
Volume (vol) vol.111 
Number (no) no.418 
Page pp.7-10 
#Pages 4 
Date of Issue 2012-01-19 (SCE) 

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