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Whole-body radiofrequency coil for 31 P MRSI at 7 T

2016; Wiley; Volume: 29; Issue: 6 Linguagem: Inglês

10.1002/nbm.3517

1099-1492

J. Löring, Wybe J. M. van der Kemp, Salam Almujayyaz, Joep W. M. van Oorschot, Peter R. Luijten, Dennis W. J. Klomp,

Atomic and Subatomic Physics Research

NMR in BiomedicineVolume 29, Issue 6 p. 709-720 Research article Whole-body radiofrequency coil for 31P MRSI at 7 T J. Löring, J. Löring Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorW. J. M. van der Kemp, W. J. M. van der Kemp Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorS. Almujayyaz, S. Almujayyaz MR Coils BV, Zaltbommel, the NetherlandsSearch for more papers by this authorJ. W. M. van Oorschot, J. W. M. van Oorschot Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorP. R. Luijten, P. R. Luijten Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorD. W. J. Klomp, Corresponding Author D. W. J. Klomp Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands MR Coils BV, Zaltbommel, the Netherlands Correspondence to: D. W. J. Klomp, Department of Radiology, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands. E-mail: d.w.j.klomp-2@umcutrecht.nlSearch for more papers by this author J. Löring, J. Löring Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorW. J. M. van der Kemp, W. J. M. van der Kemp Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorS. Almujayyaz, S. Almujayyaz MR Coils BV, Zaltbommel, the NetherlandsSearch for more papers by this authorJ. W. M. van Oorschot, J. W. M. van Oorschot Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorP. R. Luijten, P. R. Luijten Department of Radiology, University Medical Center Utrecht, Utrecht, the NetherlandsSearch for more papers by this authorD. W. J. Klomp, Corresponding Author D. W. J. Klomp Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands MR Coils BV, Zaltbommel, the Netherlands Correspondence to: D. W. J. Klomp, Department of Radiology, University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, the Netherlands. E-mail: d.w.j.klomp-2@umcutrecht.nlSearch for more papers by this author First published: 01 April 2016 https://doi.org/10.1002/nbm.3517Citations: 18Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Widespread use of ultrahigh-field 31P MRSI in clinical studies is hindered by the limited field of view and non-uniform radiofrequency (RF) field obtained from surface transceivers. The non-uniform RF field necessitates the use of high specific absorption rate (SAR)-demanding adiabatic RF pulses, limiting the signal-to-noise ratio (SNR) per unit of time. Here, we demonstrate the feasibility of using a body-sized volume RF coil at 7 T, which enables uniform excitation and ultrafast power calibration by pick-up probes. The performance of the body coil is examined by bench tests, and phantom and in vivo measurements in a 7-T MRI scanner. The accuracy of power calibration with pick-up probes is analyzed at a clinical 3-T MR system with a close to identical 1H body coil integrated at the MR system. Finally, we demonstrate high-quality three-dimensional 31P MRSI of the human body at 7 T within 5 min of data acquisition that includes RF power calibration. Copyright © 2016 John Wiley & Sons, Ltd. Citing Literature Volume29, Issue6June 2016Pages 709-720 RelatedInformation