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Abstract #4973

Fast 3D SSFP Imaging Using a Concentric Cylinders Trajectory

Kie Tae Kwon1, Holden H. Wu, 1,2, Dwight G. Nishimura1

1Electrical Engineering, Stanford University, Stanford, CA, United States; 2Cardiovascular Medicine, Stanford University, Stanford, CA, United States

A 2D concentric rings trajectory is inherently centric-ordered, provides a smooth weighting in k-space, and enables shorter scan times. Extensions of this trajectory for 3D imaging include: stack-of-rings and concentric cylinders. 3D stack-of-rings trajectory directly inherits flexible trade-offs property from 2D concentric rings. 3D concentric cylinders trajectory is similar to stack-of-rings, but it also has a unique property that leads to fewer excitations and benign off-resonance effects. In this work, we revisited the 3D concentric cylinders trajectory and have implemented an SSFP version of this sequence. Among the potential applications of this sequence is non-contrast MR angiography based on SSFP.