Abstract #4970

A Comparison of Spiral-Out, Spiral-In/out and Radial Balanced SSFP Sequences for Dynamic Cardiac Imaging

Xue Feng¹, Michael Salerno², Christopher M. Kramer,²³, Craig H. Meyer^1,3

¹Biomedical Engineering, University of Virginia, Charlottesville, VA, United States; ²Medicine, University of Virginia, Charlottesville, VA, United States; ³Radiology, University of Virginia, Charlottesville, VA, United States

Cartesian and radial balanced SSFP (bSSFP) sequences are widely used clinically for dynamic cardiac imaging. Dynamic spiral sequences have been used in many research studies, but clinical adoption has been slow. One goal of this study is to compare radial and spiral dynamic balanced SSFP scanning. The other goal is to develop a new spiral-in/spiral-out bSSFP pulse sequence to achieve flow compensation through symmetry and to exploit the bSSFP refocusing mechanism at TE = TR/2. We compared this new sequence to radial bSSFP and spiral-out bSSFP with flow-compensated rewinders.