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Abstract #3882

Comparison of 2D and 3D EPI for high-resolution functional imaging at 7T MRI

Hankyeol Lee1, Rüdiger Stirnberg2, Tony Stöcker2,3, and Kâmil Uludağ1,4,5
1Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, Republic of Korea, 2German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany, 3Department of Physics and Astronomy, University of Bonn, Bonn, Germany, 4Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea, Republic of, 5Techna Institute & Koerner Scientist in MR Imaging, University Health Network, Toronto, ON, Canada

This study presents the performance of 2D and 3D EPI sequences at 7T for functional imaging. Eleven subjects were scanned with individually optimized 2D and 3D EPI sequences with TR and total parallel imaging acceleration that were matched. Three spatial resolutions: 0.8 mm, 1.1 mm, and 1.7 mm isotropic, were used. Resulting temporal signal-to-noise ratios (tSNR) were compared between 2D and 3D EPI sequences, and their potential functional sensitivities are discussed. The results show images acquired with 3D EPI have higher tSNR at 0.8 mm and 1.1 mm resolutions, while 2D EPI images have higher tSNR at 1.7 mm resolution.

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