Abstract #0319

Methods to accelerate STAGE: Toward 8 min for Twelve 3D images on 1.5T

Aiqi Sun¹, Feng Huang¹, Yu Wang^1,2, Wei Xu¹, Yiran Wang¹, Hongyu Guo¹, Yongsheng Chen^3,4,5, and Ewart Mark Haccke^2,3,5

¹Neusoft Medical System, Shanghai, China, ²Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, China, ³The MRI Institute for Biomedical Research, Detroit, MI, United States, ⁴Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang, China, ⁵Department of Radiology, School of Medicine, Wayne State University, Detroit, MI, United States

A technique named Strategically Acquired Gradient Echo (STAGE) was recently published, which can acquire 10 images with sufficient resolution, good SNR, and co-registration in one 5-min scan on 3T. With an additional 4-min scan, MRAV and MRA can also be produced. However, to acquire a full set of 12 images on 1.5T takes over 20 minutes, which is still longer than clinical expectation. Novel acquisition and reconstruction schemes are developed in this work to further reduce acquisition time. Feasibility experiments demonstrate it is achievable to acquire 12 high quality clinically meaningful images with 0.67×1.33×2.7 mm³ in 8 minutes on 1.5T.

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