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Abstract #1252

Design of a Permanent Magnet for MRI of the Ankle on the International Space Station

Aaron R. Purchase1, Gordon E. Sarty2, Logi Vidarrson3, Keith Wachowicz1, Piotr Liszkowski4,5, Hongwei Sun1, Jonathan C. Sharp1, and Boguslaw Tomanek1,6
1Department of Oncology, University of Alberta, Edmonton, AB, Canada, 2Department of Psychology and Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, SK, Canada, 3LT Imaging, Toronto, ON, Canada, 4AGH University of Science and Technology, Krakow, Poland, 5MRI-Tech Sp. z o.o, Krakow, Poland, 6Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland

MRI is desired for monitoring bone and muscle deterioration in astronauts during long-term spaceflights and on the International Space Station (ISS). However, the magnet is generally too heavy to be transported to the ISS. Therefore, we designed a light (~10kg) magnet that allows transmit array spatial encoding (TRASE) MRI of the ankle on the ISS. The magnet is based on a sparse Halbach geometry with magnetic block-pairs. The positions of the block-pairs were optimized using a genetic algorithm. We intend to manufacture the magnet and test the entire MRI system on a Falcon 20 jet.

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