Chinese Journal of Magnetic Resonance ›› 2016, Vol. 33 ›› Issue (4): 597-608.doi: 10.11938/cjmr20160409

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Correction of k-Space Trajectory Errors in Ultra-Short TE Imaging

WANG Chao1,2, ZHOU Bo1,2, ZHANG Zhi1, YANG Chun-sheng1, CHEN Fang1, LIU Chao-yang1   

  1. 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan(Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;
    2. University of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-04-26 Revised:2016-10-25 Online:2016-12-05 Published:2016-12-05

Abstract: 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.

Key words: k-space trajectory correction, ultra-short echo-time(UTE) imaging

CLC Number: