Abstract #1067

Digital Synthesis at the Coil in a WiFi-enabled Modular Switch Mode RFPA Platform for Gradient-Free Imaging

N Reid Bolding¹, Chris Vaughn², Aria Patel¹, Snow Lin¹, Andrew Dupuis¹, William A Grissom², and Mark A Griswold¹

¹Case Western Reserve University, Cleveland, OH, United States, ²Vanderbilt University, Nashville, TN, United States

Synopsis

Keywords: RF Arrays & Systems, Low-Field MRI, Gradient Free ImagingWe present here the development of a wireless flat amplitude 2 MHz radiofrequency transmitter for under $100, focusing on the pulse synthesis stage. We gave special consideration to simplifications that can be made with high speed digital synthesis and switch mode amplifier topology. This is a component of a distributed transmit receive system, meeting the special requirements of gradient free low field quantitative imaging techniques, such as selective encoding through nutation and fingerprinting (SENF).

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