Abstract #4280

High Speed Serial ASK Signal Integrity for Wireless MRI

Greig Cameron Scott¹, Audrey Chan², Wonje Lee³, Fraser Robb⁴, John Pauly⁵, and Shreyas Vasanawala⁶

¹Electrical Engineering, Stanford University, Stanford, CA, United States, ²Victoria University of Wellington, Wellington, New Zealand, ³Pediatric Radiology, Stanford University, Stanford, CA, United States, ⁴GE Healthcare, Aurora, OH, United States, ⁵Stanford University, Stanford, CA, United States, ⁶Radiology, Stanford University, Stanford, CA, United States

A major challenge of wireless MRI is how to implement the data link. Here, progress is made using amplitude shift keyed diode ring modulators, serializer/deserializer components and clock/data recovery to demonstrate bit rate transmissions up to 600 Mbps. High gain biquad reflector antennas and UWB antennas are compared for carriers between 3 and 5 GHz. These prototypes also demonstrate bandwidth limitations and electrodynamic interactions in a birdcage test bore on wireless signal integrity. Even if dedicated wireless ICs are not possible, we believe components exist to make an easily integrated modulator for MRI wireless data transmission.

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