Compensation for MR geometric image distortion caused by the implantable drug infusion pump

Haiying Liu; John Kucharczyk; Charles L. Truwit

doi:10.1117/12.430866

28 June 2001 Compensation for MR geometric image distortion caused by the implantable drug infusion pump

Haiying Liu, John Kucharczyk, Charles L. Truwit

Proceedings Volume 4320, Medical Imaging 2001: Physics of Medical Imaging; (2001) https://doi.org/10.1117/12.430866
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

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.

Citation Download Citation

Haiying Liu, John Kucharczyk, and Charles L. Truwit "Compensation for MR geometric image distortion caused by the implantable drug infusion pump", Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); https://doi.org/10.1117/12.430866

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