Radiofrequency current source (RFCS) drive and decoupling technique for parallel transmit arrays using a high-power metal oxide semiconductor field-effect transistor (MOSFET)

Magnetic Resonance in Medicine

Volumn 62, Issue 1, 2009, Pages 218-228

  Lee, WonJe ^a   Boskamp, Eddy ^b   Grist, Thomas ^a   Kurpad, Krishna ^a,c  

^a UNIVERSITY OF WISCONSIN MADISON   (United States)

^b GE HEALTHCARE   (United States)

^c 1115 WIMR ^*  (United States)

Author keywords

Decoupling technique; Independent control; RF current source; RFCS; Transmit array

Indexed keywords

DIELECTRIC DEVICES; ELECTRIC BREAKDOWN; METALLIC COMPOUNDS; METALS; MOS DEVICES; OXIDE SEMICONDUCTORS; TRANSISTORS;

DECOUPLING TECHNIQUE; INDEPENDENT CONTROL; RF CURRENT SOURCE; RFCS; TRANSMIT ARRAYS;

POWER MOSFET;

ARTICLE; INTEGRATED CIRCUIT; METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR; NUCLEAR MAGNETIC RESONANCE IMAGING; RADIATION ENERGY; RADIOFREQUENCY CURRENT SOURCE; SEMICONDUCTOR;

EID: 67650091978     PISSN: 07403194     EISSN: 15222594     Source Type: Journal    
DOI: 10.1002/mrm.21988     Document Type: Article

References (35)

1. Frayne R, Goodyear BG, Dickhoff P, Lauzon ML, Sevick RJ. Magnetic resonance imaging at 3.0 Tesla: challenges and advantages in clinical neurological imaging. Invest Radiol 2003;38:385-402.
2. Ross JS. The high-field-strength curmudgeon. AJNR Am J Neuroradiol 2004;25:168-169.
3. Pattany PM. 3T MR imaging: the pros and cons. AJNR Am J Neuroradiol 2004;25:1455-1456.
4. Schmitz BL, Aschoff AJ, Hoffmann MH, Gron G. Advantages and pitfalls in 3T MR brain imaging: a pictorial review. AJNR Am J Neuroradiol 2005;26:2229-2237.
5. Yang QX, Wang J, Zhang X, Collins CM, Smith MB, Liu H, Zhu XH, Vaughan JT, Ugurbil K, Chen W. Analysis of wave behavior in lossy dielectric samples at high field. Magn Reson Med 2002;47:982-989.
6. Collins CM, Liu W, Schreiber W, Yang QX, Smith MB. Central brightening due to constructive interference with, without, and despite dielectric resonance. J Magn Reson Imaging 2005;21:192-196.
7. Alecci M, Collins CM, Smith MB, Jezzard P. Radio frequency magnetic field mapping of a 3 Tesla birdcage coil: experimental and theoretical dependence on sample properties. Magn Reson Med 2001;46:379-385.
8. Katscher U, Bornert P, Leussler C, van den Brink JS. Transmit SENSE. Magn Reson Med 2003;49:144-150.
9. Zhu Y. Parallel excitation with an array of transmit coils. Magn Reson Med 2004;51:775-784.
10. Roemer PB, Edelstein WA, Hayes CE, Souza SP, Mueller OM. The NMR phased array. Magn Reson Med 1990;16:192-225.
11. Jianmin W. A novel method to reduce the signal coupling of surface coils for MRI. In: Proceedings of the 4th Annual Meeting of ISMRM, New York, NY, USA, 1996 (Abstract 1434).
12. Jovan J. Ladder networks for capacitive decoupling in phased-array coils. In: Proceedings of the 9th Annual Meeting of ISMRM, Glasgow, Scotland, 2001 (Abstract 17).
13. Vernickel P, Roeschmann P, Findeklee C, Ludeke KM, Leussler Ch, Overweg J, Katscher U, Grasslin I, Schunemann K. Eight-channel transmit/receive body MRI coil at 3T. Magn Reson Med 2007;58:381-389.
14. Alagappan V, Nistler J, Adalsteinsson E, Setsompop K, Fontius U, Zelinski A, Vester M, Wiggins GC, Hebrank F, Renz W, Schmitt F, Wald LL. Degenerate mode band-pass birdcage coil for accelerated parallel excitation. Magn Reson Med 2007;57:1148-1158.
15. Lee RF, Westgate CR, Weiss RG, Newman DC, Bottomley PA. Planar strip array (PSA) for MRI. Magn Reson Med 2001;45:673-683.
16. Zhang X, Ugurbil K, Chen W. A microstrip transmission line volume coil for human head MR imaging at 4T. J Magn Reson 2003;161:242-251.
17. Zhang X, Ugurbil K, Chen W. Microstrip RF surface coil design for extremely high-field MRI and spectroscopy. Magn Reson Med 2001;46:443-450.
18. Adriany G, Moortele PF, Wiesinger F, Moeller S, Strupp JP, Anderson P, Snyder C, Zhang X, Chen W, Pruessmann KP, Boesiger P. Vaughan T, Ugurbil K. Transmit and receive transmission line arrays for 7 Tesla parallel imaging. Magn Reson Med 2005;53:434-445.
19. Hoult DI, Kolansky G, Kripiakevich D, King SB. The NMR multitransmit phased array: A Cartesian feedback approach. J Magn Reson 2004;171:64-70.
20. Hoult DI, Kolansky G, Kripiakevich D. A "hi-fi" Cartesian feedback spectrometer for precise quantitation and superior performance. J Magn Reson 2004;171:57-63.
21. Kurpad KN, Boskamp EB, Wright SM. Implementation of coil integrated RF power MOSFET as voltage controlled current source in a transmit phased array coil. In: Proceedings of the 12th Annual Meeting of ISMRM, Kyoto, Japan, 2004 (Abstract 1585).
22. Kurpad KN, Boskamp EB, Wright SM. A parallel transmit volume coil with independent control of currents on the array elements. In: Proceedings of the 13th Annual Meeting of ISMRM, Miami Beach, FL, USA, 2005 (Abstract 16).
23. Kurpad KN, Wright SM, Boskamp EB. RF current element design for independent control of current amplitude and phase in transmit phased arrays. Concepts in Magn Reson Part B (Magn Reson Eng) 2006;29B:75-83.
24. Wright SM, Wald LL. Theory and application of array coils in MR spectroscopy. NMR Biomed 1997;10:394-410.
25. Reykowski A, Wright SM, Porter JR. Design of matching networks for low noise preamplifiers. Magn Reson Med 1995;33:848-852.
26. Hoult DI. Fast recovery, high sensitivity NMR probe and preamplifier for low frequencies. Rev Sci Instrum 1979;502:193-200.
27. Chingas GC. Overcoupling NMR probes to improve transient response. J Magn Reson 1983;54:153-157.
28. Hoult DI. Fast recovery with a conventional probe. J Magn Reson 1984;57:394-403.
29. Hoult DI, Deslauriers R. Elimination of signal strength dependency upon coil loading-an aid to metabolite quantitation when the sample volume changes. Magn Reson Med 1990;163:418-424.
30. Anderson A, Dawoud M. The performance of transistor fed monopoles in active antennas. IEEE Trans Antennas Propagation 1973;21:371-374.
31. Heilman JA, Riffe MJ, Heid O, Griswold MA. On-coil current-mode amplifier for parallel transmission arrays with high efficiency and high output power. In: Proceedings of the 15th Annual Meeting of ISMRM, Berlin, Germany, 2007 (Abstract 171).
32. Duncan AG, John G. Power MOSFETS theory and applications. New York: John Wiley & Sons, Inc.; 1989. p 84-85.
33. Steve CC. RF power amplifiers for wireless communications. Norwood, OH: Artech House, Inc; 1999. p 284-288.
34. Lee W, Boskamp EB, Grist TM, Kurpad KN. A novel power MOSFET decoupling technique for parallel transmit arrays. In: Proceedings of the 15th Annual Meeting of ISMRM, Berlin, Germany, 2007 (Abstract 3252).
35. Lee W, Kurpad KN, Boskamp EB, Grist TM. Developments in active rung design for parallel transmit coils. In: Proceedings of the 14th Annual Meeting of ISMRM, Seattle, WA, USA, 2006 (Abstract 3526).