Evaluation of the postoperative spine: reducing hardware artifacts during magnetic resonance imaging.

Abstract:

:The magnetic susceptibility artifact created by the hardware that is a mainstay of today's surgical techniques can complicate magnetic resonance (MR) imaging of the postoperative spine. This article reviews the physical principles that underlie production of the magnetic susceptibility artifact, as well as the imaging parameters that can be altered to reduce artifact and improve visualization of the areas of concern. Those imaging parameters that most greatly affect artifact production are the strength of the ambient magnetic field, the type of sequence chosen, echo time, the strength and orientation of the frequency encoding gradient, the resolution along the frequency encoding axis as determined by field of view (FOV) and the number of pixels in the frequency encoding direction, the orientation of the hardware to the main magnetic field, the section thickness, and the orientation of the imaging plane.

authors

Petersilge CA

doi

10.1055/s-2000-9344

subject

Has Abstract

pub_date

2000-01-01 00:00:00

pages

293-7

issue

3

eissn

1089-7860

issn

1098-898X

pii

smr000125

journal_volume

4

pub_type

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