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Abstract #2348

The Feasibility of Asymmetrical Loopless Antennas for Therapeutic Ultrasound Catheter Cardiac Ablation Therapies

Mathew Carias 1,2 , Kevan Anderson 1 , Graham Wright 1,2 , and Kullervo Hynynen 1,2

1 Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada, 2 Medical Biophysics, The University of Toronto, Toronto, Ontario, Canada

In this study we propose the use of therapeutic ultrasound as a therapy delivery technique combined with a local asymmetrical loopless antenna for treatment monitoring. It was determined that a 10 mm distal whip length and 80 mm proximal whip length would be best suited for such a catheter. These asymmetrical designs show a decreased SNR when compared to symmetrical loopless antennas, however, SNR measurements are still adequate which enables one to place a transducer on the device. These results suggest that such a catheter can provide a minimally invasive platform for both therapy delivery and treatment monitoring for cardiac ablation therapies.

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