Abstract #3750

Fast, Robust and Self-Navigated 3D Cylindrical Imaging: MP-RAGE and FLAIR

Wei Lin¹, Qin Qin²,³, Stewart H. Mostofsky⁴, George Randy Duensing¹

¹Invivo Corporation, Philips Healthcare, Gainesville, FL, United States; ²Radiology, The Johns Hopkins University, Baltimore, MD, United States; ³F.M. Kirby Research Center, Kennedy Krieger Institute, Baltimore, MD, United States; ⁴Neurology and Psychiatry, The Johns Hopkins University, Baltimore, MD, United States

A fast, robust and self-navigated 3D imaging method is proposed, based on sampling k-space with pairs of orthogonal view planes forming a cylinder. Rotation around its main axis is corrected in real-time, while other motions are corrected retrospectively at a temporal resolution of every 1-2 second. The method achieves the same off-resonance behavior and reconstruction speed as the conventional 3D Cartesian imaging. When array coil is used, scan time can be reduced significantly by acquiring less view planes. The efficacy of the proposed technique is demonstrated in healthy volunteers using a T1-weighted MP-RAGE sequence and a T2-weighted FLAIR sequence.