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Abstract #3789

Synchronous 1 H and 23 Na dual-nuclear MRI on a clinical MRI system, equipped with a time-shared second transmit channel

Joshua D Kaggie 1,2 , Nabraj Sapkota 1,2 , Kyle Jeong 2 , Xianfeng Shi 3 , Glen R Morrell 1 , Neal K Bangerter 1,4 , and Eun-Kee Jeong 1

1 Utah Center for Advanced Imaging Research, Radiology, University of Utah, Salt Lake City, UT, United States, 2 Physics, University of Utah, Salt Lake City, UT, United States, 3 The Brain Institute and Department of Psychiatry, University of Utah, UT, United States, 4 Electrical and Computer Engineering, Brigham Young University, UT, United States

This study acquires proton and sodium images within the same sequence at 3T, without internal modification of the clinical hardware. Proton GRE and SE MR images were separately acquired, synchronously with 23Na GRE images. To overcome scanner limitations: the 1H/23Na transmit pulses were interleaved; additional hardware was added to the scanner to down-convert the 1H signal, so that both the 23Na and 1H signal were acquired at 23Na frequency through the scanner; the sequence allowed multiple 23Na acquisitions to occur between 1H acquisitions for 1H SE imaging. Both phantom and in vivo 1H/23Na synchronous images were obtained.

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