Novena Rangwala1,2, Xiaohong Joe Zhou2,3
1Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States; 2Center for Magnetic Resonance Research, University of Illinois Medical Center, Chicago, IL, United States; 3Departments of Radiology, Neurosurgery & Bioengineering, University of Illinois Medical Center, Chicago, IL, United States
A technique is proposed to reduce ghosts arising from constant, linear, and oblique phase errors in EPI-PROPELLER with an arbitrary (oblique) imaging plane. Phase correction parameters for each blade of EPI-PROPELLER were calculated from three reference scans acquired along each of the three orthogonal axes. This technique was validated on a phantom and human volunteers. The results showed a reduction of the Nyquist ghosts by at least 80% in both long- and short-axis EPI-PROPELLER images.