Effect of Z-motion in the phase of the K-space MRI data and identification of periodic Z-motion kernels

  • Authors:

  • Jonathan K. Riek;A. Murat Tekalp;Warren E. Smith

  • Affiliations:

  • Department of Electrical Engineering, Universtiy of Rochester, Rochester, NY;Department of Electrical Engineering, Universtiy of Rochester, Rochester, NY;Department of Electrical Engineering, Institute of Optics, Universtiy of Rochester, Rochester, NY

  • Venue:
  • ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: image and multidimensional signal processing - Volume V
  • Year:
  • 1993

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Abstract

In 2-D spin-echo magnetic resonance imaging (MRI), patient motion perpendicular to the selected slice (out-of-plane motion) is difficult to detect. In this paper, we propose a new method to detect sinusoidal motion without using any special pulse sequences. Once the motion is detected, the artifacts arising from different sources may be substantially reduced, leading to better and more efficient diagnosis.