Double-frequency birdcage volume coils for 4.7T and 7T

Double-frequency birdcage volume coils for 4.7T and 7T

The aim of this study was to find an optimum design for a volume RF coil for large rodent MRI/MRS at 4.7T and 7T. Three double‐frequency birdcage‐type coils were made and compared with single‐frequency coils. The most efficient design was a birdcage coil with alternate tuned elements. This coil reta...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Concepts in magnetic resonance. Part B, Magnetic resonance engineering Magnetic resonance engineering, 2005-08, Vol.26B (1), p.16-22
Hauptverfasser: Tomanek, Boguslaw, Volotovskyy, Vyacheslav, Gruwel, Marco L.H., McKenzie, Eilean, King, Scott B.
Format: Artikel
Sprache:eng
Schlagworte:
31P spectroscopy
localized MRS
proton imaging
quadrature volume RF coil
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The aim of this study was to find an optimum design for a volume RF coil for large rodent MRI/MRS at 4.7T and 7T. Three double‐frequency birdcage‐type coils were made and compared with single‐frequency coils. The most efficient design was a birdcage coil with alternate tuned elements. This coil retains most of the sensitivity of a single‐tuned coil while preserving B1 homogeneity. Spiral and four‐ring coils suffer lower efficiency at one of two frequencies. Tests of the 7T coil demonstrated high‐quality proton images and phosphorous spectra of a woodchuck liver. © 2005 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 26B: 16–22, 2005
ISSN:1552-5031
1552-504X
DOI:10.1002/cmr.b.20038