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Single TrAjectory Radial (STAR) imaging
Author(s) -
Sarty Gordon E.
Publication year - 2004
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20001
Subject(s) - cartesian coordinate system , oversampling , radial velocity , radial line , robustness (evolution) , physics , computer vision , artificial intelligence , computer science , trajectory , star (game theory) , mathematics , optics , geometry , stars , bandwidth (computing) , astrophysics , biochemistry , chemistry , astronomy , gene , computer network
The number of MRI applications that use radial k ‐space data acquisition have been increasing because of their inherent robustness to motion‐induced reconstruction image artifacts relative to Cartesian acquisition methods. However, images reconstructed from radial data are more prone to image degrading effects due to magnetic field inhomogeneities than images made from Cartesian data. Presented here is a method for acquiring several radial k ‐space data lines in one trajectory, the Single TrAjectory Radial, or STAR method, that is a variation of radial EPI. The STAR method allows for angular oversampling without the increase in imaging time that occurs with angularly oversampled single line imaging. It is shown that such oversampling potentially reduces the image degrading effect of magnetic field inhomogeneities so that the motion robust features of radial imaging may be realized in a segmented EPI approach. Magn Reson Med 51:445–451, 2004. © 2004 Wiley‐Liss, Inc.