Share Email Print
cover

Proceedings Paper

Compensation for MR geometric image distortion caused by the implantable drug infusion pump
Author(s): Haiying Liu; John Kucharczyk; Charles L. Truwit
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

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)

© SPIE. Terms of Use
Back to Top