Abstract #4378

Accelerating Phase Contrast MR Angiography by Simplified Skipped Phase Encoding & Edge Deghosting with Array Coil Enhancement (S-SPEED-ACE)

Zheng Chang¹, Xiang Qing-San^2,3, Hao Shen⁴, Jim Ji⁵, Fang-Fang Yin¹

¹Department of Radiation Oncology, Duke University, Durham, NC, United States; ²Department of Physics & Astronomy, University of British Columbia, Vancouver, BC, Canada; ³Department of Radiology, University of British Columbia, Vancouver, BC, Canada; ⁴Applied Science Laboratory, GE Healthcare, Beijing, China, People's Republic of; ⁵Department of Electrical & Computer Engineering, Texas A&M University, College Station, TX, United States

The parallel imaging method of Skipped Phase Encoding and Edge Deghosting with Array Coil Enhancement (SPEED-ACE) has been simplified with enhanced acceleration for imaging sparse objects and is termed S-SPEED-ACE. As demonstrated previously with a computer simulated study, S-SPEED-ACE partially samples k-space with multiple coils in parallel and yields a deghosted image based on a least-square-error solution. Without differential filtering and full central k-space sampling, S-SPEED-ACE uses more straightforward reconstruction and achieves further scan time reduction as compared with SPEED-ACE. In this work, S-SPEED-ACE is further developed to accelerate real human 3D phase-contrast MR angiography.