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Densely-Populated Transceiver Surface Coil Array for the Human Brain Studies at 7T

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Avdievich, N., Pan, J., & Hetherington, H. (2013). Densely-Populated Transceiver Surface Coil Array for the Human Brain Studies at 7T. Poster presented at 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013), Salt Lake City, UT, USA.


Cite as: http://hdl.handle.net/21.11116/0000-0001-557C-5
Abstract
Transceiver surface coil arrays improve transmit performance and B1 homogeneity for head imaging up to 9.4T. Arrays with larger number of smaller elements further improve SNR and parallel imaging. Overlapping adjacent elements optimizes both the loading and the penetration depth, but complicates the decoupling. First, the adjacent coils generate substantial mutual resistance and cannot be decoupled using common methods, which compensate only for the mutual reactance. Second, in a densely-populated overlapped array, coupling exists between non-adjacent elements. We have developed a single-row (1x16) overlapped surface coil transceiver head array with decoupling of both the adjacent and the next-to-one neighboring elements.