Abstract #2185

Hybrid 3T 8-channel Receive Array Using a Metamaterial Slab and Companion Loop Elements: Comparison to a Conventional Array

Léo Rémillard¹, Adam Mitchell Maunder^1,2, Ashwin Iyer¹, and Nicola De Zanche^2,3

¹Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada, ²Oncology, University of Alberta, Edmonton, AB, Canada, ³Medical Physics, Cross Cancer Institute, Edmonton, AB, Canada

Synopsis

Metamaterials (MTMs) have been used as passive elements to improve the receive sensitivity in MRI by enhancing the field locally, but not connected directly as receive elements. We present the design and construction of a novel 2D transmission line based MTM employed as a 4-port element combined with an additional 4-element coil array. Simulation and measurement of receive sensitivity are compared to those of a conventional 8-element coil array covering the same region. The receive sensitivity in a human torso sized phantom is found to be equivalent, while the MTM slab additionally enhances the transmit performance.

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