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Abstract #4217

High-Resolution Magnetization Transfer Compensated Dynamic Angiography Imaging at 7 Tesla

Ann-Kathrin Homagk1, Alexander Radbruch2, Wolfhard Semmler1

1Dept. of Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany; 2Dept. of Neuroradiology, University Heidelberg, Heidelberg, Germany

In this work, we investigate the suitability of different ASL techniques for high resolution dynamic angiography imaging of the cerebral vasculature at 7 Tesla. As the basic STAR sequence is prone to magnetization transfer effects, an additional inversion pulse was inserted prior to the acquisition of the control image. Furthermore, a PICORE, a FAIR and a FAIRER sequence were implemented. The cerebral vasculature of three volunteers was imaged with an in-plane resolution of 0.57x0.57mm using all five sequences. The acquisition time for the magnetization transfer compensated techniques was increased by up to 20%; however the visibility of peripheral vessels was improved.