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Abstract #2754

Improving B1 Excitation in Head Apex by Combining Birdcage Coil with Crossed Dipole Elements

Karthik Lakshmanan1, Martijn A. Cloos2, Graham C. Wiggins1, Ryan Brown1

1NYU, Newyork, United States; 2New York University School of Medicine, Newyork, United States

Circularly polarized volume coils have been for B1 excitation in head imaging at 7.0 Tesla. However the excitation in head apex produced by CP Volume coil is usually poor. In this work we improved the excitation in Head Apex by combining a crossed dipole Antenna pair with a Birdcage coil. With this setup we were also able to manipulate the excitation pattern in the center of the Head.