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Abstract #3288

Current-Controlled Alternating Reversed DESS MREIT for Joint Estimation of Tissue Relaxation and Electrical Properties

Hyunyeol Lee 1 and Jaeseok Park 2

1 Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Sungkyunkwan University, Suwon, Gyeonggi, Korea, 2 Department of Global Biomedical Engineering, Sungkyunkwan University, Suwon, Gyeonggi, Korea

Conventional MREIT suffers from long imaging time and low phase sensitivity, potentially resulting in inefficient conductivity estimation. Current-controlled alternating SSFP-FID was proposed as an alternative to achieve rapid encoding as well as high nonlinear phase sensitivity. Nevertheless, since the nonlinear phase model includes both tissue relaxation and Bz properties, the former has to be known as a priori for conductivity estimation, which requires multiple separate acquisitions. In this work, we propose a novel, current-controlled alternating reversed dual echo steady state (DESS) MREIT for joint estimation of tissue relaxation and electrical properties in a single measurement.

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