Abstract #4401

Construction of a 4-Channel Transmit Neck Array for PCASL Tagging at 7 Tesla and Comparison with a Head Coil.

Konstantinos Papoutsis¹, James A. Meakin¹, Aaron T. Hess², Jamie Near³, Stephen J. Payne⁴, David Edwards⁴, Peter Jezzard¹

¹FMRIB Centre, University of Oxford, Oxford, Oxfordshire, United Kingdom; ²Department of Cardiovascular Medicine , University of Oxford, Oxford, Oxfordshire, United Kingdom; ³McGill Univeristy, Montreal, Quebec, Canada; ⁴Department of Engineering Science, University of Oxford, Oxford, Oxfordshire, United Kingdom

In this study, a 4-channel neck array has been constructed and used at 7 Tesla as a tagging coil for the pCASL sequence. A comparison of the tagging efficiency and SAR was made between tagging with a 1Tx/32Rx head coil vs tagging with the neck array. Electromagnetic characterization of the neck coil helped to address local SAR risk by estimating the worst case transmission pattern.