Alex Frydrychowicz1, Emily Winslow2,
Dan Consigny1, Eric Niespodzany1, Eric Bultman1,
Alejandro Roldn-Alzate1, Kevin M. Johnson3, Oliver
Wieben4, Scott B. Reeder1
1Department of Radiology,
University of Wisconsin - Madison, Madison, WI, United States; 2Department
of Surgery, University of Wisconsin - Madison, Madison, WI, United States; 3Department
of Medical Physics, University of Wisconsin - Madison, Madison, WI, United
States; 4Departments of Radiology & Medical Physics,
University of Wisconsin - Madison, Madison, WI, United States
Hepatic and splanchnic blood flow is of particular interest in liver disease such as cirrhosis and portal hypertension. However, comprehensive assessment of flow and morphology is challenging, especially because of the livers dual blood supply and complex anatomy. 4D MR velocity mapping is a promising approach to overcome shortcomings of existing diagnostic approaches. This validation study compared a novel radially undersampled 5-point velocity encoding strategy that provides high-resolution, large volume coverage and increased velocity sensitivity with the de facto standard of reference perivascular ultrasound. Excellent correlation and an acceptable measurement bias was found for both methods.