Abstract #0193

Ultrafast Non-Contrast Enhanced 4D Dynamic MRA with 3D Stack-Of-Stars Golden Angle Radial Acquisition and KWIC Reconstruction

Robert X. Smith¹, Lirong Yan¹, Stanislas Rapacchi², Yiqun Xue³, Subashini Srinivasan², Daniel B. Ennis⁴, Peng Hu⁴, Hee Kwon Song³, Danny J.J. Wang¹,²

¹Neurology, UCLA, Los Angeles, CA, United States; ²Radiology, UCLA, Los Angeles, CA, United States; ³Radiology, University of Pennsylvania, Philadelphia, PA, United States; ⁴Radiology, University of California Los Angeles, Los Angeles, CA, United States

A new method for non-contrast enhanced time-resolved dynamic MRA (dMRA) is presented. A 3D stack-of-stars dynamic radial acquisition with golden angle view increment is combined with k-space weighted image contrast (KWIC) to achieve high spatial and temporal resolution dMRA images with significantly reduced scan time when compared with conventional methods. The acquired 4D dMRA demonstrates excellent image quality without discernable temporal blurring compared to standard Cartesian based dMRA approach.