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Abstract #1395

An Improved Power Handling Active Transmit/Receive Switch for Low Field MRI using Reed Relays

Don Straney1, Clarissa Zimmerman Cooley1,2, and Matthew S Rosen1,2,3
1Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 2Harvard Medical School, Boston, MA, United States, 3Department of Physics, Harvard University, Cambridge, MA, United States

An active transmit/receive (T/R) switch based on reed relays shows promise in overcoming the previous limitations at low field of both passive and active T/R switches. We aim to provide a design for other low-field researchers to use which handles a wide range of frequencies (DC to 3.4 Mhz) and power levels (<1 mW to 2 kW pulsed) in a simple, low-parts-count device which is easy to reproduce.

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