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Abstract #0746

Prospective motion correction for ultra-high resolution Time of Flight angiography at 7T under SAR constraints

Hendrik Mattern1, Alessandro Sciarra1, Frank Godenschweger1, Daniel Stucht1, Falk L├╝sebrink1, and Oliver Speck1,2,3,4

1Department of Biomedical Magnetic Resonance, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany, 2Leibniz Institute for Neurobiology, Magdeburg, Germany, 3Center for Behavioral Brain Sciences, Magdeburg, Germany, 4German Center for Neurodegenerative Disease, Magdeburg, Germany

At 7T, venous saturation and magnetization transfer for Time of Flight (ToF) angiography cannot be applied directly due to the increased specific absorption rate. Additionally, motion artifacts can degrade the image quality. A sequence with prospective motion correction (PMC) and sparse saturation was implemented to overcome these challenges. In vivo ultra-high resolution ToF angiograms were acquired, providing dramatically improved level of detail and image quality if PMC and sparse saturation is used. Thus, the proposed sequence unleashes the full potential of ToF angiography at 7T.

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