Internally stabilized spine: Optimal choice of frequency-encoding gradient direction during MR imaging minimizes susceptibility artifact from titanium vertebral body screws

Vincent I. Frazzini, Nolan J. Kagetsu, Carl E. Johnson, Sylvie Destian

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

In 18 vertebral bodies with titanium fixation screws and in a phantom model, visualization of the vertebral body marrow was improved and susceptibility artifact was reduced on T1-weighted spin-echo magnetic resonance images when the direction of the frequency-encoding gradient was parallel to the long axis of the screw. A perpendicular direction improved image quality only when the region of interest was adjacent to the tip of the screw. In the phantom, the length of the screw was statistically significantly increased and the width and area were reduced (P < .001) when the gradient was parallel to the long axis of the screw.

Original languageEnglish
Pages (from-to)268-272
Number of pages5
JournalRadiology
Volume204
Issue number1
DOIs
StatePublished - Jul 1997
Externally publishedYes

Keywords

  • Magnetic resonance (MR), artifact
  • Magnetic resonance (MR), comparative studies
  • Magnetic resonance (MR), technology
  • Spine, MR
  • Spine, surgery

Fingerprint

Dive into the research topics of 'Internally stabilized spine: Optimal choice of frequency-encoding gradient direction during MR imaging minimizes susceptibility artifact from titanium vertebral body screws'. Together they form a unique fingerprint.

Cite this