Evaluation of gradient inhomogeneity in the optimal design of gradient coils.
The image distortion caused by gradient inhomogeneity was derived from the image equation of Fourier MR imaging. A measurement of gradient inhomogeneity was proposed based on the amount of image distortion. Using the proposed measurement of gradient inhomogeneity in the optimal design of a z-gradient coil reduced image distortion by 39-45% compared to a previously used figure of merit in gradient coil design.
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Department of Radiology, University of Utah Health Sciences Center, Salt Lake City 84132, USA.
Parker
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D000465:Algorithms; D004867:Equipment Design; D005583:Fourier Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D012815:Signal Processing, Computer-Assisted