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A systematic research on ultra-low field magnetic resonance imaging (MRI) is conducted based on high-Tc dc-SQUID senor. The coil system is first updated to reach the requirements of MRI experiment. After that one-dimensional and two-dimensional imaging are performed and images consistent well with original phantoms are obtained successfully. Two different methods are used to rebuild the image: direct back projection and Fourier transform reconstruction. Both of them can obtain the profile of water phantom. A comparative discussion between these methods is proposed: the Fourier transform method has a better profile, while the direct back projection has a better signal-to-noise ratio. Imaging of biological sample such as green pepper and celery is also performed, and it is consistent well with the physical object.
[1] Lauterbur P C 1973 Nature 242 190
[2] Mossle M, Han S I, Myers W R, Lee S K, Kelso N, Hatridge M, Pines A, Clarke J 2006 J. Magnetic Resonance 179 146
[3] Clarke J, Hatridge M, Moble M 2007 Annu. Rev. Biomed. Eng. 9 389
[4] Shahverdiev E M, Shore K A 2005 Phys. Rev. E 71 016201
[5] Wang J S, Feng J, Zhan M S 2001 Acta Phys. Sin. 50 299 (in Chinese) [王继锁, 冯健, 詹明生 2001 50 299]
[6] McDermott R, Lee S K, ten Haken B, Trabesinger A H, Pines A, Clarke J 2004 PNAS 101 7857
[7] McDermott R, Kelso N, Lee S K, Moble M, Muck M, Myers W, Haken B T, Seton H C, Trabesinger A H, Pines A, Clarke J 2004 J. Low Temperature Phys. 135 5
[8] Magnelind P E, Gomez J J, Matlashov A N, Owens T, Sandin J H, Volegov P L, Espy M A 2011 IEEE Trans. Appl. Supercond. 21 456
[9] Liao S H, Huang K W, Yang H C, Yen C T, Chen M J, Chen H H, Horng H E, Yang S Y 2010 Appl. Phys. Lett. 97 263701
[10] Qiu L Q, Zhang Y, Krause H J, Braginski A I, Burghoff M, Trahms L 2007 Appl. Phys. Lett. 91 072505
[11] Qiu L Q, Zhang Y, Krause H J, Braginski A I, Burghoff M, Trahms L 2007 Appl. Phys. Lett. 91 072505
[12] Li S, Reng Y F, Wang N, Tian Y, Chu H F, Li S L, Chen Y F, Li J, Chen G H, Zheng D N 2009 Acta Phys. Sin. 58 5744 (in Chinese) [李绍, 任育峰, 王宁, 田野, 陈莺飞, 李洁, 郑东宁 2009 58 5744]
[13] Yang H C, Horng H E, Yang S Y, Liao S H 2009 Supercond. Sci. Technol. 22 045008
[14] Wang N, Jin Y J, Li S, Ren Y F, Tian Y, Chen Y F, Li J, Chen G H, Zheng D N 2011 J. Physics: Conference Beijing, China, August 10-17
[15] Connor C, Chang J, Pines A 1990 Rev. Sci. Instrum. 61 1059
[16] Zu D L 2004 Magnetic Resonance Imaging (Beijing: Higher Education Press) p69 (in Chinese) [俎栋林 2004 核磁共振成像学 (北京: 高等教育出版社) 第69页]
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[1] Lauterbur P C 1973 Nature 242 190
[2] Mossle M, Han S I, Myers W R, Lee S K, Kelso N, Hatridge M, Pines A, Clarke J 2006 J. Magnetic Resonance 179 146
[3] Clarke J, Hatridge M, Moble M 2007 Annu. Rev. Biomed. Eng. 9 389
[4] Shahverdiev E M, Shore K A 2005 Phys. Rev. E 71 016201
[5] Wang J S, Feng J, Zhan M S 2001 Acta Phys. Sin. 50 299 (in Chinese) [王继锁, 冯健, 詹明生 2001 50 299]
[6] McDermott R, Lee S K, ten Haken B, Trabesinger A H, Pines A, Clarke J 2004 PNAS 101 7857
[7] McDermott R, Kelso N, Lee S K, Moble M, Muck M, Myers W, Haken B T, Seton H C, Trabesinger A H, Pines A, Clarke J 2004 J. Low Temperature Phys. 135 5
[8] Magnelind P E, Gomez J J, Matlashov A N, Owens T, Sandin J H, Volegov P L, Espy M A 2011 IEEE Trans. Appl. Supercond. 21 456
[9] Liao S H, Huang K W, Yang H C, Yen C T, Chen M J, Chen H H, Horng H E, Yang S Y 2010 Appl. Phys. Lett. 97 263701
[10] Qiu L Q, Zhang Y, Krause H J, Braginski A I, Burghoff M, Trahms L 2007 Appl. Phys. Lett. 91 072505
[11] Qiu L Q, Zhang Y, Krause H J, Braginski A I, Burghoff M, Trahms L 2007 Appl. Phys. Lett. 91 072505
[12] Li S, Reng Y F, Wang N, Tian Y, Chu H F, Li S L, Chen Y F, Li J, Chen G H, Zheng D N 2009 Acta Phys. Sin. 58 5744 (in Chinese) [李绍, 任育峰, 王宁, 田野, 陈莺飞, 李洁, 郑东宁 2009 58 5744]
[13] Yang H C, Horng H E, Yang S Y, Liao S H 2009 Supercond. Sci. Technol. 22 045008
[14] Wang N, Jin Y J, Li S, Ren Y F, Tian Y, Chen Y F, Li J, Chen G H, Zheng D N 2011 J. Physics: Conference Beijing, China, August 10-17
[15] Connor C, Chang J, Pines A 1990 Rev. Sci. Instrum. 61 1059
[16] Zu D L 2004 Magnetic Resonance Imaging (Beijing: Higher Education Press) p69 (in Chinese) [俎栋林 2004 核磁共振成像学 (北京: 高等教育出版社) 第69页]
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