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Abstract #1783

Transmit volume coil-receive surface coil for proton operating at 14 Tesla

Masoumeh Dehghani M. 1 , Arthur Magill W. 2 , Yves Pilloud 1 , Nicolas Kunz 2 , and Rolf Gruetter 1,2

1 Laboratory for Functional and Metabolic Imaging, Ecole Polytechnique Fdrale de Lausanne, Lausanne, Vaud, Switzerland, 2 Centre dImagerie Biomdicale, Ecole Polytechnique Fdrale de Lausanne, Lausanne, Vaud, Switzerland

The design and operation of a transmit birdcage coil combined with a surface receive loop for small animal imaging and spectroscopy at 600MHz (1H at 14.1T) is presented. The transmit coil is a 16-rung high pass birdcage driven in quadrature and detuned during reception by PIN diodes placed between every rung on one end ring. The receive loop is tuned using a varactor diode, eliminating the need for variable capacitors and detuning PIN diodes on the loop, saving considerable space in the probe design. This system provides homogeneous excitation and high sensitivity for functional, anatomic, and other MRI/S studies.

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