Jg. Pipe, An optimized center-out k-space trajectory for multishot MRI: Comparison with spiral and projection reconstruction, MAGN RES M, 42(4), 1999, pp. 714-720
Citations number
9
Categorie Soggetti
Radiology ,Nuclear Medicine & Imaging","Medical Research Diagnosis & Treatment
A method for collecting MRI data on a set of rotated trajectories that begi
n at the center of k-space is outlined, It is theoretically slightly faster
, slightly less susceptible to off-resonance and motion-induced phase, and
produces images with slightly better signal-to-noise ratio than methods usi
ng Archimedean spiral trajectories, particularly for a short sampling durat
ion. It also produces more accurate images than those of projection reconst
ruction methods, which are significantly undersampled azimuthally. This met
hod may be most useful when imaging areas with large inhomogeneities (e.g.,
near metallic implants), short T-2 species, or high turbulence (e.g., gas
imaging). Magn Reson Med 42:714-720, 1999. (C) 1999 Wiley-Liss, Inc.