Expansion:
spiral Echo Planar Imaging
Multi-Shot spiral Echo Planar Imaging
spiral k-space trajectory
Technique:
An imaging sequence closely related to EPI imaging is spiral k-space imaging, which also utilizes rapidly switching gradients. In spiral k-space imaging, the X and Y gradients are oscillated 90 degrees out of phase with each other and k-space is filled in a spiral fashion, with the central views acquired first, with the advantages of decreased motion sensitivity and disadvantage of being sensitive to susceptibility artifacts. Multi-shot spiral k-space imaging utilizes multiple spiral trajectories and achieves higher spatial resolution.
Typical Paramaters:
Reference:
All You Really Need to Know About MRI Physics, 8-10
Contributor:
Related Sequences/Terms:
GRE, SE, FE, GE, ETL, EPI
Comments:
Pulse Sequence Diagrams:
