Open birdcage coil for head imaging at 7T.
birdcage coil
brain imaging
head coil
open coil
ultra-high field MRI
Journal
Magnetic resonance in medicine
ISSN: 1522-2594
Titre abrégé: Magn Reson Med
Pays: United States
ID NLM: 8505245
Informations de publication
Date de publication:
10 2021
10 2021
Historique:
revised:
07
04
2021
received:
18
02
2021
accepted:
26
04
2021
pubmed:
4
6
2021
medline:
3
8
2021
entrez:
3
6
2021
Statut:
ppublish
Résumé
To theoretically describe, design, and test the new geometry of the birdcage coil for 7 Tesla anatomical brain imaging, which includes a large window on top, without deliberately jeopardizing its homogeneity and efficiency. This opencage will not only improve patient comfort but also enable the volunteer to follow functional MRI stimuli. This design could also facilitate the tracking of patient compliance and enable better correction of the movement. Via the transfer matrix approach, a birdcage-like coil with a nonperiodic distribution of rungs is constructed with optimized currents in the coil rungs. Subsequently, the coil is adjusted in full-wave simulations. Then, the coil is assembled, fine-tuned, and matched on the bench. Finally, these results are confirmed experimentally on a phantom and in vivo. Indeed, the computed isolation of -14.9 dB between the feeding ports of the coil and the symmetry of the circular polarized mode pattern transmit RF magnetic field ( The proposed opencage coil can be designed and work without a dramatic drop of performance in terms of the
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2290-2300Subventions
Organisme : European Union's Horizon 2020
ID : 736937
Organisme : Fondation Leducq: ERPT program NEUROVASC7T
Organisme : LABEX WIFI
ID : ANR-10-IDEX-0001-02 PSL
Organisme : LABEX WIFI
ID : ANR-10-LABX-24
Informations de copyright
© 2021 International Society for Magnetic Resonance in Medicine.
Références
Hayes CE, Edelstein WA, Schenck JF, Mueller OM, Eash M. An efficient, highly homogeneous radiofrequency coil for whole-body NMR imaging at 1.5 T. J Magn Reson (1969). 1985;63:622-628.
Hayes CE. The development of the birdcage resonator: a historical perspective. NMR Biomed. 2009;22:908-918.
Golestanirad L, Kazemivalipour E, Keil B, et al. Reconfigurable MRI coil technology can substantially reduce RF heating of deep brain stimulation implants: first in-vitro study of RF heating reduction in bilateral DBS leads at 1.5 T. PLoS One. 2019;14:1-17.
Webb AG. Dielectric materials in magnetic resonance. Concepts Magn Reson Part A Bridg Educ Res. 2011;38A:148-184.
Hu R, Kleimaier D, Malzacher M, Hoesl MAU, Paschke NK, Schad LR. X-Nuclei imaging: current state, technical challenges, and future directions. J Magn Reson Imaging. 2020;51:355-376.
Huang RS, Sereno MI. Visual stimulus presentation using fiber optics in the MRI scanner. J Neurosci Methods. 2008;169:76-83.
Frost R, Wighton P, Karahanoğlu FI, et al. Markerless high-frequency prospective motion correction for neuroanatomical MRI. Magn Reson Med. 2019;82:126-144
Salem U, Kumar VA, Madewell JE, et al. Neurosurgical applications of MRI guided laser interstitial thermal therapy (LITT). Cancer Imaging. 2019;19:65.
Ballon D, Graham MC, Miodownik S, Koutcher JA. A 64 MHz half-birdcage resonator for clinical imaging. J Magn Reson (1969). 1990;90:131-140.
Hudson AMJ, Köckenberger W, Bowtell RW. Open access birdcage coils for microscopic imaging of plants at 11.7T. MAGMA. 2000;10:69-74.
Peshkovsky AS, Kennan RP, Fabry ME, Avdievich NI. Open half-volume quadrature transverse electromagnetic coil for high-field magnetic resonance imaging. Magn Reson Med. 2005;53:937-943.
Avdievich NI. Transceiver-phased arrays for human brain studies at 7 T. Appl Magn Reson. 2011;41:483-506.
Sengupta S, Roebroeck A, Kemper VG, et al. A specialized multi-transmit head coil for high resolution fMRI of the human visual cortex at 7T. PLoS One. 2016;11:e0165418.
Clément J, Gruetter R, Ipek Ö. A combined 32-channel receive-loops/8-channel transmit-dipoles coil array for whole-brain MR imaging at 7T. Magn Reson Med. 2019;82:1229-1241.
Wiggins GC, Wiggins CJ, Potthast A, et al. A 32 channel receive-only head coil and detunable transmit birdcage coil for 7 Tesla brain imaging. In Proceedings of the 14th Annual Meeting of ISMRM, Seattle, WA, 2006. p. 415.
Mispelter J, Lupu M, Briguet A. NMR Probeheads for Biophysical and Biomedical Experiments: Theoretical Principles and Practical Guidelines. 2nd ed. London, UK: Imperial College Press; 2015.
Nikulin A, De Rosny J, Haliot K, Larrat B, Ourir A. Opencage radio frequency coil for magnetic resonance imaging. Appl Phys Lett. 2019;114:053503.
Li S, Collins CM, Dardzinski BJ, Chin CL, Smith MB. A method to create an optimum current distribution and homogeneous B1 field for elliptical birdcage coils. Magn Reson Med. 1997;37:600-608.
Leifer MC. Theory of the quadrature elliptic birdcage coil. Magn Reson Med. 1997;38:726-732.
De Zanche N, Yahya A, Vermeulen FE, Allen PS. Analytical approach to noncircular section birdcage coil design: verification with a Cassinian oval coil. Magn Reson Med. 2005;53:201-211.
Caloz C, Itoh T. Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications. The Engineering Approach. Hoboken, NJ: John Wiley & Sons; 2006.
Grover FW. Inductance Calculations: Working Formulas and Tables. Mineola, NY: Dover Publications; 2013.
Pascone R, Vullo T, Farrelly J, Cahill PT. Explicit treatment of mutual inductance in eight-column birdcage resonators. Magn Reson Imaging. 1992;10:401-410.
Li X, Rispoli JV. Toward 7T breast MRI clinical study: safety assessment using simulation of heterogeneous breast models in RF exposure. Magn Reson Med. 2019;81:1307-1321.
Rispoli JV, Wright SM, Malloy CR, McDougall MP. Automated modification and fusion of voxel models to construct body phantoms with heterogeneous breast tissue: application to MRI simulations. J Biomed Graph Comput. 2017;7:1.
IT'IS Foundation. Overview: Database of Tissue Properties. Available at: https://itis.swiss/virtual-population/tissue-properties/overview/. Accessed March 1, 2021.
Alecci M, Jezzard P. Characterization and reduction of gradient-induced eddy currents in the RF shield of a TEM resonator. Magn Reson Med. 2002;48:404-407.
Chung S, Kim D, Breton E, Axel L. Rapid B1+ mapping using a preconditioning RF pulse with turboFLASH readout. Magn Reson Med. 2010;64:439-446.
Saylor CA, inventor; Invivo Corp, assignee. High-Field Mode-Stable Resonator for Magnetic Resonance Imaging. US patent US7345482B2. March 18, 2008.
Vignaud A, Mauconduit F, Gras V, et al. Fast and unconditionally safe in vivo MR head protocol for home-made coil prototype assessment at 7T. J Phys: Conf Ser. 2018;1092:012159.
Nikulin A. Volume RF Coils Based on Metamaterials for Ultra-high Field Magnetic Resonance Imaging [Dissertation]. Paris: Institut Langevin, ESPCI Paris, CNRS, PSL University; 2020.