Abstract #1395

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

Don Straney¹, Clarissa Zimmerman Cooley^1,2, and Matthew S Rosen^1,2,3

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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