- Workshop presentation
- Open Access
Design, evaluation and application of a modular 32 channel transmit/receive surface coil array for cardiac MRI at 7T
© Graessl et al; licensee BioMed Central Ltd. 2013
- Published: 30 January 2013
- Coil Array
- Voxel Model
- Loop Element
- Surface Coil Array
- Ultrahigh Field
Cardiac MR (CMR) at ultrahigh fields (≥7.0 T) is challenged by B1+ inhomogeneities and signal voids which bear the potential to spoil the signal-to-noise (SNR) benefits at 7.0 T. There is a trend towards an ever larger number of transmit and receive channels, to support multi-dimensional B1+ shimming and parallel imaging. Therefore this work proposes a modular, two dimensional 32-channel transmit and receive array using loop elements and examines its efficacy for enhanced B1+ homogeneity and improved parallel imaging performance.
Our results demonstrate that the modular 32 channel coil array supports the acquisition of rather uniform images of the heart at 7.0 T. Combining a large number of surface coil elements yielded an excellent SNR and facilitated the depiction of subtle anatomical cardiac details. The parallel imaging performance enabled the acquisition of high resolution images with satisfactory SNR within one breath-hold (Fig. 2).
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.