Abstract #0709

Diurnal Variation of Renal Blood Flow using 4D Flow MRI

Sylvana García-Rodríguez¹, Alejandro Roldán-Alzate^1,2, Camilo A. Campo¹, Scott B. Reeder¹, Oliver Wieben^1,3, and Christopher J. François¹

¹Radiology, University of Wisconsin-Madison, Madison, WI, United States, ²Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ³Medical Physics, Univerisity of Wisconsin-Madison, Madison, WI, United States

This study investigated the diurnal changes in renal blood flow in healthy volunteers using 4D flow MRI, to determine the optimal time of day to perform renal blood flow measurements. Five 4D flow MRI acquisitions were performed throughout the day in seven healthy subjects to mimic potential imaging scheduling time points. Significant differences in renal blood flow were observed depending upon time of day and prandial status. This study confirms the importance of timing of renal MRI studies assessing kidney function.

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