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Abstract #1052

Combined Transmit Array and 8-channel Receive Coil Array for 19F/1H for Human Lung Imaging at 1.5 T Utilizing MEMS Transmit-receive Detuning

Adam Maunder1, Madhwesha Rao1, Fraser J. L. Robb1,2, and Jim M Wild1

1Unit of Academic Radiology, University of Sheffield, Sheffield, United Kingdom, 2GE Healthcare Inc., Aurora, OH, United States

MRI of inert fluorinated gases is a developing method for pulmonary ventilation imaging, but image quality is constrained by low spin density. Additionally, proton imaging is desirable for complementary structural information from the lungs. Here, an 8-element transmit/receive coil array for 1.5 T is presented, which is capable of imaging both 19F and 1H nuclei with higher SNR when compared to single-element alternatives. Microelectromechanical systems (MEMS) switches are utilized to provide broadband transmit-receive isolation over the frequency range of both nuclei. Coil channel isolation is demonstrated and MEMS switching performance with phantom imaging of both nuclei.

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