Abstract #0081

Fat mitigation strategies to improve image quality of radial 4D flow MRI in obese subjects

Thekla Helene Oechtering^1,2, A M K Muntasir Shamim³, Alma Spahic⁴, Nikolaos Panagiotopoulos^1,2, Oliver Wieben^1,4, Alejandro Roldán-Alzate^1,5,6, Scott B Reeder^1,4,5,6,7, and Kevin M Johnson^1,4

¹Department of Radiology, University of Wisconsin-Madison, Madison, WI, United States, ²Department of Radiology and Nuclear Medicine, Universität zu Lübeck, Lübeck, Germany, ³Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, United States, ⁴Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, ⁵Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ⁶Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ⁷Department of Emergency Medicine, University of Wisconsin-Madison, Madison, WI, United States

Synopsis

4D flow MRI of the abdomen is challenging in obese patients due to confounding streak artifacts from fat and large imaging volume. This ongoing study aims to test different fat mitigation strategies to improve image quality. We acquired three 10-min contrast-enhanced, radial 4D flow sequences: 1) with clinically used standard parameters, 2) with inner volume excitation, and 3) with fat saturation. Preliminary results confirm best signal-to-noise ratio, longest streamlines and fewest streak-artifacts using inner volume excitation. Flow rate and repeatability did not differ between sequences.

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