Centric scan SPRITE magnetic resonance imaging.
Two rapid, pure phase encode, centric scan, Single Point Ramped Imaging with T1-Enhancement (SPRITE) MRI methods are described. Each retains the benefits of the standard SPRITE method, most notably the ability to image short T2* systems, while increasing the sensitivity and generality of the technique. The Spiral-SPRITE method utilizes a modified Archimedean spiral k-space trajectory. The Conical-SPRITE method utilizes a system of spirals mapped to conical surfaces to sample the k-space cube. The sampled k-space points are naturally Cartesian grid points, eliminating the requirement of a re-gridding procedure prior to image reconstruction. The effects of transient state behaviour on image resolution and signal/noise are explored.
Halse
Meghan
M
Department of Physics, MRI Centre, PO Box 4400, University of New Brunswick, Fredericton, NB, Canada E3B 5A3.
Goodyear
David J
DJ
MacMillan
Bryce
B
Szomolanyi
Pavol
P
Matheson
David
D
Balcom
Bruce J
BJ