Ultrahigh-field MRI whole-slice and localized RF field excitations using the same RF transmit array

IEEE Transactions on Medical Imaging

Volumn 25, Issue 10, 2006, Pages 1341-1347

  Ibrahim, Tamer S ^a,b,c  

^a IEEE   (United States)

^b UNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE   (United States)

^c University of Oklahoma   (United States)

Author keywords

Finite difference time domain (FDTD); Modeling; Optimization; Radio frequency (RF) coils; RF field homogeneity; RF field localization; Ultrahigh field (UHF) magnetic resonance imaging (MRI)

Indexed keywords

FIELD HOMOGENEITY; FIELD LOCALIZATION; RADIO FREQUENCY (RF) COILS;

ANTENNA PHASED ARRAYS; BIOLOGICAL ORGANS; FINITE DIFFERENCE METHOD; NUMERICAL METHODS; OPTIMIZATION; RESONATORS; TIME DOMAIN ANALYSIS;

MAGNETIC RESONANCE IMAGING;

DIAGNOSTIC AGENT;

ALGORITHM; ANATOMY; ARTICLE; BIOLOGICAL MODEL; BRAIN; BRAIN MAPPING; COMPUTER ASSISTED DIAGNOSIS; COMPUTER SIMULATION; EQUIPMENT; EQUIPMENT DESIGN; EVALUATION; HISTOLOGY; HUMAN; IMAGE ENHANCEMENT; INSTRUMENTATION; MALE; METHODOLOGY; NUCLEAR MAGNETIC RESONANCE IMAGING; PHYSIOLOGY; RADIOFREQUENCY RADIATION; REPRODUCIBILITY; SENSITIVITY AND SPECIFICITY; THREE DIMENSIONAL IMAGING; TRANSDUCER;

ALGORITHMS; ANATOMY, CROSS-SECTIONAL; BRAIN; BRAIN MAPPING; COMPUTER SIMULATION; EQUIPMENT DESIGN; EQUIPMENT FAILURE ANALYSIS; HUMANS; IMAGE ENHANCEMENT; IMAGE INTERPRETATION, COMPUTER-ASSISTED; IMAGING, THREE-DIMENSIONAL; MAGNETIC RESONANCE IMAGING; MALE; MODELS, NEUROLOGICAL; RADIO WAVES; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY; TRANSDUCERS;

EID: 33846836945     PISSN: 02780062     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMI.2006.880666     Document Type: Article

References (37)

1. M. Tincher, C. R. Meger, R. Gupta, and D. M. Williams, "Polynomial modeling and reduction of RF body coil spatial inhomogeneity in MRI," IEEE Trans. Med. Imag., vol. 12, no. 2, pp. 361-365, Jun. 1993.
2. S. Li, C. M. Collins, B. J. Dardzinski, C. L. Chin, and M. B. Smith, "A method to create an optimum current distribution and homogeneous B1 field for elliptical birdcage coils," Alagn. Reson. Med., vol. 37, pp. 600-608, Apr. 1997.
3. L. K. Forbes, S. Crozier, and D. M. Doddrell, "An analysis and optimization of RF probes used in magnetic resonance," Imag. Meas. Sci. Technol., vol. 7, pp. 1281-1290, 1987.
4. O. Ocali and E. Atalar, "Ultimate intrinsic signal-to-noise ratio in MRI," Magn. Reson. Med., vol. 39, pp. 462-473, Mar. 1998.
5. T. A. Riauka, N. F. Zanche, R. Thompson, F. E. Vermeulen, C. E. Capjack, and P. S. Allen, "A numerical approach to non-circular birdcage RF coil optimization: verification with a fourth-order coil," Magn. Reson. Med., vol. 41, pp. 1180-1188, 1999.
6. A. Kangarlu, B. A. Baertlein, R. Lee, T. S. Ibrahim, A. M. Abduljalil, L. Yang, and P.-M. L. Robitaille, "Analysis of the dielectric resonance phenomenon in ultra high field magnetic resonance imaging," J. Comput. Assist. Tomogr., vol. 26, pp. 821-831, 1999.
7. T. S. Ibrahim, R. Lee, A. M. Abduljalil, B. A. Baertlein, and P.-M. L. Robitaille, "Dielectric resonances and B1 field inhomogeneity in UHFMRI: Computational analysis and experimental findings," Magn. Reson. Imag., vol. 19, pp. 219-226, 2001.
8. T. S. Ibrahim, C. Mitchell, R. Lee, P. Schmalbrock, and D. W. Chakeres, "Perspective into the operation of RF coils from 1.5 to 11.7 T," Magn. Reson. Med., vol. 54, pp. 683-690, 2005.
9. T. S. Ibrahim, R. Lee, B. A. Baertlein, and P.-M. L. Robitaille, "Effect of RF coil excitation on field inhomogeneity at ultra high fields: A field optimized TEM resonator," Magn. Reson. Imag., vol. 19, pp. 1339-1347, 2001.
10. T. S. Ibrahim, A. Kangarlu, and D. W. Chakeres, "Design and performance issues of RF coils utilized in ultra high field MRI: Experimental and numerical evaluations," IEEE Biol. Med. Eng., vol. 52, pp. 1278-1284, Jul. 2005.
11. P. F. Van de Moortele, G. Adriany, C. Akgun, S. Moeller, J. Ritter, J. T. Vaughan, and K. Ugurbil, "B1 phase spatial pattern at 7 T: Impact on B1 inhomogeneities with a head transceiver," in Proc. Int. Soc. Magn. Reson. Med. Annu. Meeting, Miami, FL, 2005, p. 2748.
12. T. S. Ibrahim, R. Lee, B. A. Baertlein, A. Kangarlu, and P.-M. L. Robitaille, "Application of finite difference time domain method for the design of birdcage RF head coils using multiport excitations," Magn. Reson. Imag., vol. 18, pp. 733-742, 2000.
13. J. T. Vaughan, L. DelaBarre, C. Snyder, G. Adriany, C. M. Collins, P.-F. Van De Moortele, S. Moeller, J. Ritter, J. Strupp, P. Andersen, J. Tian, M. B. Smith, and K. Ugurbil, "RF image optimization at 7 T & 9.4 T," in Proc. Int. Soc. Magn. Reson. Med. Anna. Meeting, Miami, FL, 2005, p. 953.
14. G. Adriany, P. F. Van de Moortele, F. Wiesinger, S. Moeller, J. P. Strupp, P. Andersen, C. Snyder, X. Zhang, W. Chen, K. P. Pruessmann, P. Boesiger, T. Vaughan, and K. Ugurbil, "Transmit and receive transmission line arrays for 7 T parallel imaging," Magn. Reson. Med., vol. 53, pp. 434-445, Feb. 2005.
15. D. I. Hoult, "Sensitivity and power deposition in a high-field imaging experiment," J. Magn. Reson. Imag., vol. 12, pp. 46-67, Jul. 2000.
16. R. F. Lee and C. M. Foresto, "A focused MRI with coupled phased array at 7 T," in Proc. Int. Soc. Magn. Reson. Med. 12th Annu. Sci. Meeting, Kyoto, Japan, 2004, p. 34.
17. T. S. Ibrahim, "RF selective excitation for localized imaging at 9.4 T," in Proc. Int. Soc. Magn. Reson. Med. Annu. Meeting, Miami, FL, 2005, p. 890.
18. B. Keong Li, F. Liu, and S. Crozier, "Focused, eight-element transceive phased array coil for parallel magnetic resonance imaging of the chest-theoretical considerations," Magn. Reson. Med., vol. 53, pp. 1251-1257, Jun. 2005.
19. J. T. Vaughan, H. P. Hetherington, J. O. Otu, J. W. Pan, and J. M. Pohost, "High frequency volume coils for clinical NMR imaging and spectroscopy," Magn. Reson. Med., vol. 32, pp. 206-218, 1994.
20. T. S. Ibrahim, "7 T whole-slice and localized excitation everywhere in the human head," in Proc. Int. Soc. Magn. Reson. Med. Annu. Meeting, Seattle, WA, 2005, p. 700.
21. T. S. Ibrahim and R. Lee, "Evaluation of MRI RF probes utilizing infrared sensors," IEEE Tran. Biomed. Eng., vol. 53, no. 5, pp. 963-967, May 2006.
22. S. M. Wright and L. L. Wald, "Theory and application of array coils in MR spectroscopy," NMR Biomed., vol. 10, pp. 394-110, Dec. 1997.
23. M. A. Griswold, P. M. Jakob, R. M. Heidemann, M. Nittka, V. Jellus, J. Wang, B. Kiefer, and A. Haase, "Generalized autocalibrating partially parallel acquisitions (GRAPPA)," Magn. Reson. Med., vol. 47, pp. 1202-10, 2002.
24. M. P. McDougall and S. M. Wright, "64-channel array coil for single echo acquisition magnetic resonance imaging," Magn. Reson. Med., vol. 54, pp. 386-392, Aug. 2005.
25. C. J. Hardy and H. E. Cline, "Spatial localization in two dimensions using NMR designer pulses," J. Magn. Reson., vol. 82, pp. 647-654, 1989.
26. J. M. Pauly, B. S. Hu, S. J. Wang, D. G. Nishimura, and A. Macovski, "A three-dimensional spin-echo or inversion pulse," Magn. Reson. Med., vol. 29, pp. 2-6, Jan. 1993.
27. S. Conolly, J. Pauly, D. Nishimura, and A. Macovski, "Two- dimensional selective adiabatic pulses," Magn. Reson. Med., vol. 24, pp. 302-313, Apr. 1992.
28. J. W. Carlson and D. M. Kramer, "Rapid radiofrequency calibration in MRI," Magn. Reson. Med., vol. 15, pp. 438-145, 1990.
29. N. P. Davies and P. Jezzard, "Calibration of gradient propagation delays for accurate two-dimensional radiofrequency pulses," Magn. Reson. Med., vol. 53, pp. 231-236, Jan. 2005.
30. S. Rieseberg, J. Frahm, and J. Finsterbusch, "Two-dimensional spatially-selective RF excitation pulses in echo-planar imaging," Magn. Reson. Med., vol. 47, pp. 1186-1193, Jun. 2002.
31. K. St Lawrence, T. Y. Lee, and M. Benkelman, "Spatial localization combining projection presaturation with a two-dimensional excitation pulse," Magn. Reson. Med., vol. 40, pp. 944-947, Dec. 1998.
32. U. Katscher, P. Bornert, C. Leussler, and J. S. van den Brink, "Transmit SENSE," Magn. Reson. Med., vol. 49, pp. 144-150, Jan. 2003.
33. U. Katscher, P. Bornert, and J. S. van den Brink, "Theoretical and numerical aspects of transmit SENSE," IEEE Trans. Med. Imag., vol. 23, no. 4, pp. 520-525, Apr. 2004.
34. S. Saekho, F. E. Boada, D. C. Noll, and V. A. Stenger, "Small tip angle three-dimensional tailored radiofrequency slab-select pulse for reduced B1 inhomogeneity at 3 T," Magn. Reson. Med., vol. 53, pp. 479-484, Feb. 2005.
35. A. Saekho, T. S. Ibrahim, P. Schmalbrock, and A. Stenger, "Simulation of 3D tailored RF pulses for B1 inhomogeneity compensation at 8 T," in Proc. Int. Soc. Magn. Reson. Med. Annu. Meeting, Toronto, ON, Canada, 2003, p. 2483.
36. D. I. Hoult, G. Kolansky, D. Kripiakevich, and S. B. King, "The NMR multi-transmit phased array: A Cartesian feedback approach," J. Magn. Reson., vol. 171, pp. 64-70, Nov. 2004.
37. D. I. Hoult, G. Kolansky, and D. Kripiakevich, "A 'Hi-Fi' Cartesian feedback spectrometer for precise quantitation and superior performance," J. Magn. Reson., vol. 171, pp. 57-63, Nov. 2004.