Abstract #3952

Measuring stroke volume with wearable RF antennas: a validation study with EM simulations and MRI

Bart Romke Steensma¹, Christina Anna Louka^1,2, Alexander Jurriaan Eberhardt Raaijmakers³, and Cornelis Antonius Theodorus van den Berg¹

¹Center for Image Sciences, Computational Imaging Group, University Medical Center Utrecht, Utrecht, Netherlands, ²School of Applied Mathematical and Physical Sciences, Department of Physics, National Technical University of Athens, Athens, Greece, ³Biomedical Engineering, Medical Imaging Analysis, Eindhoven University of Technology, Eindhoven, Netherlands

Synopsis

We developed a wearable setup to detect heart motion and stroke volume with an RF antenna connected to a miniature network analyzer. EM simulations were used to demonstrate the possibility of measuring changes in stroke volume with an RF antenna and to investigate the spatial sensitivity of the antenna. A Valsalva manoeuver was used to provoke changes in stroke volume, which were observed with the RF antenna and in cine MRI acquisitions.

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