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Proceedings Paper

Compensation for MR geometric image distortion caused by the implantable drug infusion pump
Author(s): Haiying Liu; John Kucharczyk; Charles L. Truwit
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Paper Abstract

Implantable devices often cause serious MR image artifacts in the vicinity of their implanted locations as the result of susceptibility-induced image distortion, and the resulting artifacts may render the MR images useless for diagnosis. To reduce the MR artifacts in the stage of image acquisition, we have implemented a scheme by which the field inhomogeneity is compensated in a spin echo imaging sequence by introducing a readout-like gradient pulse along the slice-select gradient direction temporally concurrent with the read-out gradient (TE equals 20 msec). It can be shown that this slice direction compensation gradient pulse during the read-out period compensates the field inhomogeneity during the image data collection period.

Paper Details

Date Published: 28 June 2001
PDF: 3 pages
Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430866
Show Author Affiliations
Haiying Liu, Univ. of Minnesota/Twin Cities (United States)
John Kucharczyk, Univ. of Minnesota/Twin Cities (United States)
Charles L. Truwit, Univ. of Minnesota/Twin Cities (United States)

Published in SPIE Proceedings Vol. 4320:
Medical Imaging 2001: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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