title: Evaluation of a New1H/31P Dual-Tuned Birdcage Coil for31P Spectroscopy.
abstract: We introduce a new dual-tuned Hydrogen/Phosphorus (1H/31P) birdcage coil, referred to as split birdcage coil, and evaluate its performance using both simulations and magnetic resonance (MR) experiments on a 3 T MR scanner. The proposed coil simplifies the practical matters of tuning and matching, which makes the coil easily reproducible. Simulations were run with the Finite Difference in Time Domain (FDTD) method to evaluate the sensitivity and homogeneity of the magnetic field generated by the proposed1H coils. Following simulations, MR experiments were conducted using both a phantom and human thigh to compare the proposed design with a currently available commercial dual-tuned flexible surface coil, referred to as flex surface coil, for signal to noise ratio (SNR) as well as homogeneity for the31P coil. At regions deep within the human thigh, the split birdcage coil was able to acquire spectroscopic signal with a higher average SNR than the flex surface coil. For all regions except those close to the flex surface coil, the split birdcage coil matched or exceeded the performance of the flex surface coil.
authors.affiliation: Department of Physics and Astronomy & BioImaging Research Center, University of Georgia, Athens, GA, USA.
authors.forename: Wm
authors.initials: W
authors.lastname: Potter
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: Kk
authors.initials: K
authors.lastname: McCully
authors.forename: Q
authors.initials: Q
authors.lastname: Zhao
keywords: Chemical Shift Imaging; Dual-Tuned Birdcage; Magnetic Resonance Imaging; Spectroscopy
references.citation: J Magn Reson B. 1994 Feb;103(2):103-14
references.pmid: 8137076
references.citation: IEEE Trans Biomed Eng. 1998 May;45(5):650-9
references.pmid: 9581064
references.citation: Magn Reson Med. 1998 Dec;40(6):847-56
references.pmid: 9840829
references.citation: MAGMA. 2004 Dec;17(3-6):363-71
references.pmid: 15538658
references.citation: NMR Biomed. 2009 Jul;22(6):663-74
references.pmid: 19378301
references.citation: J Magn Reson Imaging. 2007 Jun;25(6):1235-47
references.pmid: 17520721
references.citation: J Appl Physiol (1985). 2011 Jul;111(1):143-8
references.pmid: 21512153
references.citation: MAGMA. 2000 Jun;10(2):69-74
references.pmid: 10873195
references.citation: Magn Reson Q. 1994 Mar;10(1):43-63
references.pmid: 8161485
references.citation: NMR Biomed. 1997 Dec;10(8):394-410
references.pmid: 9542737
references.citation: J Magn Reson Imaging. 2009 Jan;29(1):13-22
references.pmid: 19097097
references.citation: Magn Reson Med. 1994 Jul;32(1):104-9
references.pmid: 8084223
references.citation: J Magn Reson Imaging. 2005 Sep;22(3):427-32
references.pmid: 16104007
references.citation: NMR Biomed. 2009 Nov;22(9):908-18
references.pmid: 19856386
references.citation: NMR Biomed. 2009 Dec;22(10):1063-71
references.pmid: 19579230
references.citation: Magn Reson Med. 2004 Jan;51(1):217-21
references.pmid: 14705065
references.citation: MAGMA. 2000 Jun;10(2):61-8
references.pmid: 10873194
references.citation: Dyn Med. 2009 Dec 15;8:5
references.pmid: 20003509
references.citation: NMR Biomed. 1999 Nov;12(7):413-39
references.pmid: 10654290
references.citation: J Int Neuropsychol Soc. 2009 Sep;15(5):671-83
references.pmid: 19674503
references.citation: Med Sci Sports Exerc. 2003 Jun;35(6):901-7
references.pmid: 12783036
references.citation: J Magn Reson Imaging. 2006 Aug;24(2):439-43
references.pmid: 16786582
references.citation: IEEE Trans Med Imaging. 1989;8(3):286-94
references.pmid: 18230528
references.citation: Magn Reson Med. 1993 Jul;30(1):107-14
references.pmid: 8396709
references.citation: Magn Reson Med. 1997 Dec;38(6):953-63
references.pmid: 9402197
references.citation: J Magn Reson Imaging. 2005 Jan;21(1):66-71
references.pmid: 15611950
references.citation: Am J Physiol Regul Integr Comp Physiol. 2009 Jan;296(1):R161-70
references.pmid: 18945946
references.citation: Phys Med Biol. 2001 Feb;46(2):609-19
references.pmid: 11229737
references.citation: Magn Reson Med. 1999 Jul;42(1):173-82
references.pmid: 10398964
references.citation: J Magn Reson. 2011 Dec;213(2):329-43
references.pmid: 22152352
references.citation: Magn Reson Med. 2009 Feb;61(2):315-34
references.pmid: 19165885
references.citation: J Appl Physiol (1985). 2004 Mar;96(3):871-8
references.pmid: 14578362
references.citation: J Appl Physiol (1985). 2009 Oct;107(4):1095-104
references.pmid: 19679747
references.citation: J Magn Reson B. 1994 May;104(1):26-33
references.pmid: 8025812