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.