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Abstract #1542

Clock Transmission Methods for Wireless MRI: A Study on Clock Jitter & Impact on Data Sampling

Jonathan Y Lu1, Thomas Grafendorfer2, Fraser Robb3, Simone Winkler4, Shreyas Vasanawala4, John M Pauly1, and Greig C Scott1

1Electrical Engineering, Stanford University, Stanford, CA, United States, 2GE Healthcare Inc, Stanford, CA, United States, 3GE Healthcare Inc, Aurora, OH, United States, 4Radiology, Stanford University, Stanford, CA, United States

Creating wireless MRI receive coils requires the clock for the on-coil electronics to be in phase with the clock of the MRI transmit system. Sending a wireless clock using a phase locked loop (PLL) single tone that is divided down versus a dual tone AM double side band suppressed carrier (AM DSB-SC) system can have different results in jitter of the clock. We experiment with these architectures,. The wireless clock transfer methods will ultimately impact SNR of the ADC system and its robustness to phase changes from environmental scenarios such as patient motion or multipath effects.

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