Abstract #3768

Non-Contrast-Enhanced Renal MRA Using Inflow-Enhanced, Inversion-Recovery at 3T

Thorsten Alexander Bley^1,2, Scott Brian Reeder², Mark Schiebler², Naoyuki Takei³, Jean H. Brittain⁴, Thomas Grist², Christopher J. Francois²

¹Diagnostic and Interventional Radiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; ²Radiology, University of Wisconsin-Madison, Madison, WI, United States; ³Japan Applied Science Laboratory, GE Healthcare, Tokyo, Japan; ⁴Applied Science Laboratory, GE Healthcare, Waukesha, WI, United States

This work presents validation of an inflow-enhanced, inversion-recovery (IR) balanced steady state free precession (bSSFP) based non-contrast-enhanced MRA (NCE-MRA) for assessment of renal arteries at 3T in patients with suspected renal artery stenosis or with a history of renal artery transplant. NCE-MRA with inflow-enhanced IR bSSFP produced consistent results and demonstrated moderate agreement with CE-MRA for both readers and strong inter-observer agreement for grading renal artery stenosis >50%.