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Abstract #4277

STAR MRI With Non-Magnetic, Integrated Circulator based on Switched Transmission Lines

Aravind Nagulu1, Ahmed Kord1, Gehua Tong1, Michael Garwood2, Lance DelaBarre2, Djaudat Idiyatullin2, SungMin Sohn3, J. Thomas Vaughan1, and Harish Krishnaswamy1
1Columbia University, New York, NY, United States, 2University of Minnesota, Minneapolis, MN, United States, 3Arizona State Univeristy, Tempe, AZ, United States

Traditional MRI employs time division duplexing between the receiver (RX) and transmitter (TX) to avoid RX saturation from TX self-interference. Large switching time between the TX and RX modes demands large TX power and constricts the imaging to tissues with large relaxation times. In this work, we propose a magnetic-free, switch-transmission line circulator which is fully compatible with MRI systems and achieve simultaneous transmit and receive (STAR) MRI.

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