Abstract #0068

4D Flow MRI Reference Values of the Portal Venous System

Andrew Pan Huang^1,2, Grant S Roberts³, Alejandro Roldán-Alzate^4,5, Oliver Wieben³, Scott B Reeder^2,3,5,6,7, and Thekla Oechtering^2,8

¹Department of Surgery, Section of Vascular Surgery, University of Michigan, Ann Arbor, MI, United States, ²Department of Radiology, University of Wisconsin, Madison, WI, United States, ³Department of Medical Physics, University of Wisconsin, Madison, WI, United States, ⁴Department of Mechanical Engineering, University of Wisconsin, Madison, WI, United States, ⁵Department of Biomedical Engineering, University of Wisconsin, Madison, WI, United States, ⁶Department of Medicine, University of Wisconsin, Madison, WI, United States, ⁷Department of Emergency Medicine, University of Wisconsin, Madison, WI, United States, ⁸Department of Radiology and Nuclear Medicine, Universität zu Lübeck, Lübeck, Germany

Synopsis

Keywords: Liver, Vessels

4D flow MRI can aid in diagnosing pathologies associated with hemodynamic changes in the portal vein, such as portal hypertension. Normal reference ranges for portal venous flow are lacking but essential for future clinical implementation. We report reference values based on radial 4D flow MRI measurements of mean flow, velocity, and effective diameter in the portal venous vasculature in 44 healthy subjects (59% female, 18-74 years). Faint helical and linear flow are physiological flow patterns observed in the portal vein. This study provides normative values for emerging clinical applications of 4D flow MRI currently under development.

Keywords: Liver, Velocity&Flow, Vessels

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