TY - JOUR
T1 - An optimized center-out k-space trajectory for multishot MRI
T2 - Comparison with spiral and projection reconstruction
AU - Pipe, James G.
PY - 1999
Y1 - 1999
N2 - A method for collecting MRI data on a set of rotated trajectories that begin 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 using Archimedean spiral trajectories, particularly for a short sampling duration. It also produces more accurate images than those of projection reconstruction methods, which are significantly undersampled azimuthally. This method may be most useful when imaging areas with large inhomogeneities (e.g., near metallic implants), short T2 species, or high turbulence (e.g., gas imaging).
AB - A method for collecting MRI data on a set of rotated trajectories that begin 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 using Archimedean spiral trajectories, particularly for a short sampling duration. It also produces more accurate images than those of projection reconstruction methods, which are significantly undersampled azimuthally. This method may be most useful when imaging areas with large inhomogeneities (e.g., near metallic implants), short T2 species, or high turbulence (e.g., gas imaging).
KW - K-space
KW - Projection reconstruction
KW - Spiral
KW - Susceptibility
KW - Trajectory
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U2 - 10.1002/(SICI)1522-2594(199910)42:4<714::AID-MRM13>3.0.CO;2-G
DO - 10.1002/(SICI)1522-2594(199910)42:4<714::AID-MRM13>3.0.CO;2-G
M3 - Article
C2 - 10502760
AN - SCOPUS:0032835537
SN - 0740-3194
VL - 42
SP - 714
EP - 720
JO - Magnetic Resonance in Medicine
JF - Magnetic Resonance in Medicine
IS - 4
ER -