Determining the tuning and matching requirements of RF coils using electromagnetic simulation and electric circuit analysis

Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering

Volumn 25, Issue 1, 2005, Pages 27-41

  Cassidy, P J ^a,b   Clarke, K ^a   Edwards, D J ^b  

^a UNIVERSITY OF OXFORD   (United Kingdom)

^b UNIVERSITY OF OXFORD   (United Kingdom)

Author keywords

Impedance matching; Magnetic resonance imaging; Radio frequency coils; Transmission line modelling; Tuning

Indexed keywords

BUFFER;

ANALYTIC METHOD; ARTICLE; COMPARATIVE STUDY; ELECTRIC CAPACITANCE; ELECTROMAGNETIC FIELD; INSTRUMENTATION; MATHEMATICAL ANALYSIS; MATHEMATICAL MODEL; NUCLEAR MAGNETIC RESONANCE IMAGING; RADIOFREQUENCY; SIMULATION; VALIDATION PROCESS;

EID: 20144382076     PISSN: 10437347     EISSN: None     Source Type: Journal    
DOI: 10.1002/cmr.b.20029     Document Type: Article

References (26)

1. Dardzinski BJ, Li S, Collins CM, Williams GD, Smith MB. 1998. A birdcage coil tuned by RF shielding for application at 9.4 T. J Magn Reson 131:32-38.
2. Robinson EM, Mackenzie IS, Freemont A, Jansani MK. 1988. High resolution nuclear magnetic resonance imaging of pig knees at 4.7 T. Magn Reson Imaging 6:591-594.
3. Su S, Saunders JK. 1996. A new miniaturizable birdcage resonator design with improved electric-field characteristics. J Magn Reson B 110:210-212.
4. Villa P, Vaquero JJ, Chesnick S, Ruiz-Cabello J. 1999. Probe efficiency improvement with remote and transmission line tuning and matching. Magn Reson Imaging 17:1083-1086.
5. Decorps M, Blondet P, Reutenauer H, Albrand JP, Remy C. 1985. An inductively coupled, series-tuned NMR probe. J Magn Reson 65:100-109.
6. Froncisz F, Jesmanowicz A, Hyde JS. 1986. Inductive (flux linkage) coupling to local coils in magnetic resonance imaging and spectroscopy. J Magn Reson 66: 135-143.
7. Schnall MD, Barlow C, Harihara Subramanian V, Leigh JR. 1986. Wireless implanted magnetic resonance probes for in vivo NMR. J Magn Reson 68:161-167.
8. Kuhns PL, Lizak MJ, Lee SH, Conradi MS. 1988. Inductive coupling and tuning in NMR probes; applications. J Magn Reson 78:69-76.
9. Chen CN, Hoult DI. 1989. Biomedical magnetic resonance technology. New York: IOP.
10. Andris P. 1999. Matching RF coils for NMR tomograph. J Elect Eng 50:147-150.
11. Tropp J. 2002. Dissipation, resistance, and rational impedance matching for TEM and birdcage resonators. Concepts Magn Reson (Magn Reson Eng) 15:177-188.
12. Hoult DI, Tomanek B. 2002. Use of mutually inductive coupling in probe design. Concepts Magn Reson (Magn Reson Eng) 15:262-285.
13. Johns PB, Beurle RL. 1971. Numerical solutions to 2-dimensional scattering problems using a transmission-line matrix. Proc IEE 118:1203-1208.
14. Cassidy PJ, Grieve S, Clarke K, Edwards DJ. 2002. Electromagnetic characterization of MR RF coils using the transmission-line modelling method. MAGMA 14: 20-29.
15. Alderman DW, Grant DM. 1979. An efficient decoupler coil design which reduces heating in conductive samples in superconducting spectrometers. J Magn Reson 36:447-451.
16. Hayes CE, Edelstein WA, Schenck JF, Mueller OM, Eash M. 1985. An efficient, highly homogeneous radiofrequency coil for whole-body NMR imaging at 1.5 T. J Magn Reson 63:622-628.
17. Tropp J. 1989. The theory of the bird-cage resonator. J Magn Reson 82:51-62.
18. Pascone RJ, Garcia BJ, Fitzgerald TM, Vullo T, Zipagan R, Cahill PT. 1991. Generalized electrical analysis of low-pass and high-pass birdcage resonators. Magn Reson Imaging 9:395-408.
19. Leifer MC. 1997. Resonant modes of the birdcage coil. J Magn Reson 124:51-60.
20. Chin CL, Collins CM, Li S, Dardzinski BJ, Smith MB. 2002. Birdcage builder: design of specified-geometry birdcage coils with desired current pattern and resonant frequency. Concepts Magn Reson (Magn Reson Eng) 15:156-163.
21. Vullo T, Zipagan R, Pascone RJ, Whalen JP, Cahill PT. 1992. Experimental design and fabrication of birdcage resonators for magnetic resonance imaging. Magn Reson Med 24:243-252.
22. Gandhi OP, Chen XB. 1999. Specific absorption and induced current densities for an anatomy-based model of the human for exposure to time-varying magnetic fields. Magn Reson Med 41:816-823.
23. Feynman RP, Leighton RB, Sands M. 1977. The Feynman lectures on physics, vol. 2. Reading, MA: Addison-Wesley.
24. Terman FE. 1943. Radio engineers' handbook. New York: McGraw-Hill.
25. Murphy-Boesch J, Koretsky AP. 1983. An in vivo NMR probe circuit for improved sensitivity. J Magn Reson 54:526-532.
26. Krauss HL, Bostian CW, Raab FH. 1980. Solid state radio engineering. New York: John Wiley & Sons. p 38-82.