Ultra-short echo-time (UTE) imaging has many potential applications in clinical diagnosis and scientific researches. Image quality in UTE can be degraded by imperfections in k-space trajectory resulting from eddy currents, gradient delay and so on. In this work, an improved method for k-space trajectory correction in UTE was proposed. Experimental results showed that this method could correct back effects of the trajectory errors, and improve the quality of UTE images significantly. In addition, with the use of the method, UTE would have lower performance requirement for magnetic resonance imaging (MRI) hardware system, which is beneficial for development of routine UTE applications.
ZHANG Zhi
,
WANG Chao
,
ZHOU Bo
,
YANG Chun-sheng
,
CHEN Fang
,
LIU Chao-yang
. Correction of k-Space Trajectory Errors in Ultra-Short TE Imaging[J]. Chinese Journal of Magnetic Resonance, 2016
, 33(4)
: 597
-608
.
DOI: 10.11938/cjmr20160409
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