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.