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 Lüsebrink¹, and Oliver Speck^1,2,3,4

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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