Meeting Banner
Abstract #1457

Development of Asymmetric 8Tx/16Rx Coil Array for Human Cardiac MRI at 7 T: RF Shimming and SAR Safety Study

Ibrahim A. Elabyad1, M. Terekhov1, M. R. Stefanescu1, M. Fischer1, and L. M. Schreiber1

1Chair of Cellular and Molecular Imaging, Comprehensive Heart Failure Center (CHFC), University Hospital Wuerzburg, Wuerzburg, Germany

A novel transceiver 8Tx/16Rx coil array was simulated and developed for cardiac magnetic resonance imaging (cMRI) in humans at 7T. The developed cardiac coil array consists of two independent parts, the semi-curved anterior array and the flat posterior array, each array composed of identical 8-elements. An optimization routine has been developed in MATLAB to find the optimal phases for B1+-field homogeneity with minimal local SAR values within the Duke and Ella human models. RF-shimming improves the B1+-field homogeneity by 30% and 46% for Duke and Ella, respectively. The novel cardiac pTx array has higher Tx-efficiency and flexibility in RF-shimming compared to the 1Tx commercial coil.

This abstract and the presentation materials are available to members only; a login is required.

Join Here