An optimized solenoidal head radiofrequency coil for low-field magnetic resonance imaging

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DOIResolve DOI: http://doi.org/10.1016/j.mri.2009.05.018
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TypeArticle
Journal titleMagnetic Resonance Imaging
Volume27
Issue9
Pages13021308; # of pages: 7
SubjectMRI; RF coil; Solenoidalcoil; Low-field MRI; B1field; SNR
AbstractApplications of low-field magnetic resonance imaging (MRI) systems (<0.3 T) are limited due to the signal-to-noise ratio (SNR) being lower than that provided by systems based on superconductive magnets (> or = 1.5 T). Therefore, the design of radiofrequency (RF) coils for low-field MRI requires careful consideration as significant gains in SNR can be achieved with the proper design of the RF coil. This article describes an analytical method for the optimization of solenoidal coils. Coil and sample losses are analyzed to provide maximum SNR and optimum B(1) field homogeneity. The calculations are performed for solenoidal coils optimized for the human head at 0.2 T, but the method could also be applied to any solenoidal coil for imaging other anatomical regions at low field. Several coils were constructed to compare experimental and theoretical results. A head magnetic resonance image obtained at 0.2 T with the optimum design is presented.
Publication date
LanguageEnglish
AffiliationNRC Institute for Biodiagnostics; National Research Council Canada
Peer reviewedYes
NPARC number20001144
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Record identifier544636c6-cac8-41b2-b642-160af0a36d58
Record created2012-05-25
Record modified2016-05-09
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