Abstract #0532

Non-Contrast-Enhanced Renal & Abdominal MRA Using Velocity-Selective Inversion Preparation

Taehoon Shin¹, Pauline W. Worters², Shreyas S. Vasanawala², Bob S. Hu³,⁴, Dwight G. Nishimura¹

¹Electrical Engineering, Stanford University, Stanford, CA, United States; ²Radiology, Stanford University; ³Palo Alto Medical Foundation, Palo Alto, CA, United States; ⁴Heart Vista Inc., Palo Alto, CA, United States

Inflow slab-selective (SS) inversion-recovery (IR) 3D imaging has been widely used for non-contrast-enhanced (NCE) renal MR angiography, but with limited craniocaudal coverage due to the usability of upstream arterial blood only. We propose a novel NCE MRA method that allows visualization of renal and abdominopelvic arteries over a large field-of-view. This is achieved by employing a velocity-selective inversion preparation that preserves arterial blood within the imaging volume while inverting background tissues. The capability of the proposed method to depict various abdominal arteries is demonstrated in-vivo with a comparison to the SS IR method.