RF shimming of the neck using a 2 and a 4 channel travelling wave neck array at 
7T MRI

Koning, W; Bluemink, JH; Boer, VO; Raaijmakers , A; Henning, A; Zwanenburg, JJM; van den Berg , CAT; Luijten, PR; Klomp, DJW

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Meeting Abstract

RF shimming of the neck using a 2 and a 4 channel travelling wave neck array at 7T MRI

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http://www.ismrm.org/12/Session53.htm
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Citation

Koning, W., Bluemink, J., Boer, V., Raaijmakers, A., Henning, A., Zwanenburg, J., et al. (2012). RF shimming of the neck using a 2 and a 4 channel travelling wave neck array at 7T MRI. In 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012).

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-B752-5

Abstract

For neck imaging with 7T MRI the versatility of 2 and a 4 channel transmit array was evaluated. The array consists of a neck pillow filled with D2O. The pillow acts as a leaky waveguide in which a wave is fed by 2 or 4 radiative antenna’s. RF shimming is used to demonstrate versatility: focussing the RF with the 2 channel system allows imaging of carotids and spine. Going from 2 to 4 channels allows for homogeneity improvement and reduction of SAR.