Abstract #1071

Abbreviated Three Minute 4D Flow MRI of the Portal Circulation: Prospective Evaluation in Obese Subjects

Thekla Helene Oechtering^1,2, AMK Muntasir Shamim³, David Harris⁴, Nikolaos Panagiotopoulos^1,2, Alma Spahic⁵, Oliver Wieben^1,6, Kevin M Johnson^1,3, Alejandro Roldán-Alzate^1,7,8, and Scott B Reeder^1,6,7,8,9

¹Department of Radiology, University of Wisconsin-Madison, Madison, USA, 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, USA, WI, United States, ⁴University of Wisconsin-Madison, Madison, USA, WI, United States, ⁵Department of Medical Physics, University of Wisconsin-Madison, Madison, USA, WI, United States, ⁶Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, ⁷Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ⁸Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ⁹Department of Emergency Medicine, University of Wisconsin-Madison, Madison, WI, United States

Synopsis

Keywords: Flow, Liver

Constant, non-pulsatile flow in the portal venous system offers the possibility of time-averaged reconstruction for shortening the acquisition time. We acquired both a 10min and 3min radial 4D flow MRI (PCVIPR) in 10 subjects in a test-retest paradigm. Time-averaged 10min and 3min exams were compared to the reference standard, i.e., cardiac-phase resolved 10min exam (14 timeframes). All datasets were analyzable with quality rated as “good” for all 3min exams. Small vessels were best visualized in the time-averaged 10min data. Conservation of mass analysis and test-retest repeatability yielded excellent results for all reconstructions. Quantitative results agreed well between reconstructions.

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