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博碩士論文 etd-0902104-003559 詳細資訊
Title page for etd-0902104-003559
論文名稱
Title
邊緣場磁共振成像:系統架構,靈敏度增強和應用
Stray field magnetic resonance imaging:system construction, sensitivity enhancement and applications
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
81
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2004-06-18
繳交日期
Date of Submission
2004-09-02
關鍵字
Keywords
梯度、邊緣場、核磁共振、磁共振成像
magnetic resonance imaging, nuclear magnetic resonance, stray field, gradient
統計
Statistics
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The thesis/dissertation has been browsed 5659 times, has been downloaded 2673 times.
中文摘要
固態樣品的磁共振成像或各類材料的快速擴散研究中都需要很高的磁場梯度(∼1000G/cm到∼10T/cm)。超導磁鐵的邊緣場具有穩定且強大的梯度磁場。我們首先將現有的4.7T和11.7T的兩個超導磁鐵的邊緣場作了完整的測量,找出磁場及梯度的分佈。為了得到極小區域的樣品的磁共振信號,我們自製了能提昇靈敏度的微線圈探頭。利用此探頭在選定的幾個磁場(及梯度)下進行了光譜及一維和二維磁共振成像實驗。結果證明此套裝置能提供微米甚至亞微米量級的解析度。另外我們也探討了結合邊緣場成像與新的影像處理技巧而提高影像品質可能性,也展示了邊緣場成像方法在實際系統中的應用。
Abstract
none
目次 Table of Contents
壹、緒論 ………………………………………………………………………01
貳、譜線寬化機制與高解析磁共振成像 ……………………………………04
2-1 偶極偶極寬化機制及線窄化法……………………………………04
2-2 抗磁性磁化率寬化機制與高解析磁共振成像……………………06
參、原理部分 …………………………………………………………………10
肆、實驗部分 …………………………………………………………………17
4-1 儀器…………………………………………………………………17
4-1.1 Varian Inova AS500MHz 固態核磁共振光譜儀……………17
4-1.2 Varian Inova 200MHz 固態核磁共振光譜儀…………………17
4-1.3 自製微線圈探頭 …………………………………………… 17
4-1.4 高斯計 ……………………………………………………… 19
4-2 樣品…………………………………………………………………19
4-3 脈衝序列……………………………………………………………19
4-3.1 CPMG(Carr-Purcell-Meiboom-Gill)序列……………………19
4-3.2 SEMS (Spin-echo Multislice) 序列 ……………………………20
伍、結果與討論……………………………………………………………… 21
5-1 500MHz固態核磁共振光譜儀測量之結果 ……………………… 21
5-1.1 4mm成像固態探頭之一維1H CPMG光譜………………… 21
5-1.2 自制微線圈探頭之一維1H CPMG光譜…………………… 31
5-2 200MHz固態核磁共振光譜儀測量之結果 ………………………41
5-3 高斯計之測量結果…………………………………………………52
5-3.1 500MHz固態核磁共振光譜儀之測量結果…………………52
5-3.2 200MHz固態核磁共振光譜儀之測量結果…………………55
5-4 矽膠假體之影像……………………………………………………57
陸、總結和未來展望 …………………………………………………………62
柒、參考文獻 …………………………………………………………………64
捌、附 錄………………………………………………………………………68
參考文獻 References
1. Lauterbur, P. C. Nature 1973, 242, 190.
2. Mansfield, P. and Grannell, P. K. J. Phys. C:Solid State Phys. 1973, 6, L422.
3. Kumar, P.;Welti, D. and Ernst, R. R. J. Magn. Reson. 1975, 18, 69.
4. Edelstein, W. A.;Hutchison, J. M. S.;Johnson, G. and Redpath, T. Phys. Med. Biol. 1980, 25, 751.
5. Mansfield, P. J. Phys. C:Solid State Phys. 1977, 10, L55.
6. Emid, S. and Creyghton, J. H. Physica B. 1985, 128, 81.
7. Eccles, C. D. E. and Callaghan, P. T. J. Magn. Reson. 1986, 68, 393.
8. Aguayo, J. B.;Blackband, S. J.;Schocniger, J.;Mattingly, M. A. and Hintermann, M. Nature 1986, 322, 190.
9. Blümich, B. and Kuhn, W. (Eds.) Magnetic Resonance Microscopy:Method and Applications in Materials Science. Agriculture and Biomedicine, VCH, Weinheim, 1992.
10. Callaghan, P. T. Principles of Nuclear Magnetic Resonance Microscopy, Clarendon, Oxford, 1991.
11. Bowtell, R. W.;Brown, G. D.;Glover, P. M.;McJury, M. and Mansfield, P. Philos. Trans. R. Soc. Lond. A. 1990, 333, 457.
12. Samoilenko, A. A.;Artemov, D. Yu. and Sibeldina, A. L. JETP Lett. 1988, 47, 417.
13. Samoilenko, A. A.;Artemov, D. Yu. and Sibeldina, A. L. Bruker Rep. 1987, 2, 30.
14. McDonald, P. J. Prog. Nucl. Magn. Reson. Spectrosc. 1997, 30, 69.
15. McDonald, P. J. and Newling, B. Rep. Prog. Phys. 1998, 61, 1441.
16.Godward, J. Ciampi, E. Cifelli, M. and McDonald P. J. J. Magn. Reson. 2002, 155, 92.
17. Benson, T. B. and McDonald, P. J. J. Magn. Reson. A 1995, 112, 17.
18. Bain, A. D. and Randall, E. W. J. Magn. Reson. A 1996, 123, 49.
19. Hürlimann, M. D. J. Magn. Reson. 2001, 148, 367.
20. Zick, K. Technical Report NMR/B353/393,Bruker Anlytische Messtechnik GmbH Silberstreifen, D-7512 Rheinstetten 4/Karlsruhe, 1993.
21. Wang, P. S.;Minor, D. B. and Malghan, S. G. J. Mater. Sci. 1993, 28(18), 4940.
22. Iwamiya, J. H. and Sinton, S.W. S Solid State Nucl. Magn. Reson. 1996, 6, 333.
23. Glover, P. M.;Aptaker, P. S.;Bowler, J. R.;Ciampi, E. and McDonald, P. J. J. Magn. Reson. 1999, 139, 90.
24. Blümich, B.;Blümler, P.;Eidmann, G.;Guthausen, A.;Haken, R.;Schmitz, U.;Saito, K. and Zimmer, G. Magn. Reson. Imaging 1998, 16, 479.
25. Balibanu, F.;Hailu, K.;Eymael, R.;Demco, D. E. and Blümich, B. J. Magn. Reson. 2000, 145, 246.
26. van Vleck, J. H., Phys. Rev. 1948, 74, 1168.
27. Demco, D. E. and Blümich, B. Concepts Magn. Reson. 2000, 12, 269.
28. Conradi, M. S.;Garroway, A. N.;Cory, D. G. and Miller, J. B. J. Magn. Reson. 1991, 94, 370.
29. McDonald, P. J.;Attard, J. J. and Taylor, D.G. J. Magn. Reson. 1987, 72, 224.
30. McDonald, P. J. and Lonergan, A. R. Physica B. 1992, 176, 173.
31. Cory, D. G.;Reichwein, A. M. and Veeman, W. S. J. Magn. Reson. 1988, 80, 259.
32. Chingas, G. C.;Miller, J. B. and Garroway, A. N. J. Magn. Reson. 1986, 66, 530.
33. Ludeke, K. M.;Roschmann, P. and Tischler, R. Magn. Reson. Imaging 1985, 3, 329.
34. Callaghan, P. T. J. Magn. Reson. 1990, 87, 304.
35. Cottrell, S. P.;Halse, M. R. and Strange, J. H. Meas. Sci. Technol. 1990, 1, 624.
36. Mat Daud, Y. and Halse, M. R. Physica B. 1992, 176, 167.
37. McDonald, P. J.;Perry, K. L. and Roberts, S. P. Meas. Sci. Technol. 1993, 3, 896.
38. Randall, E. W., Samoilenko, A. A., Nunes, T. J. Magn. Reson. A 1995, 116, 122.
39. Demco, D. E. and Blümich, B. Concepts Magn. Reson. 2000, 12, 118.
40. Slichter, C. Principles of Magnetic Resonance. 3rdenlarged ed. Berlin: Springer-Verlag; 1989. Chap 5 and 8.
41. Demco, D. E., Hafner, S., Kimmich, R. J. Magn. Reson. 1991, 94, 333.
42. Garroway, A. N., Grannell, P. K., and Mansfield, P. J. Phys. C: Solid State Phys. 1974, 7, L457.
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