Centric scan SPRITE magnetic resonance imaging

Meghan Halse; David J Goodyear; Bryce MacMillan; Pavol Szomolanyi; David Matheson; Bruce J Balcom

doi:10.1016/j.jmr.2003.08.004

Centric scan SPRITE magnetic resonance imaging

J Magn Reson. 2003 Dec;165(2):219-29. doi: 10.1016/j.jmr.2003.08.004.

Authors

Meghan Halse¹, David J Goodyear, Bryce MacMillan, Pavol Szomolanyi, David Matheson, Bruce J Balcom

Affiliation

¹ Department of Physics, MRI Centre, PO Box 4400, University of New Brunswick, Fredericton, NB, Canada E3B 5A3.

PMID: 14643703
DOI: 10.1016/j.jmr.2003.08.004

Abstract

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.