Magnetic resonance imaging of titanium anterior cervical spine plating systems

Teiji Tominaga, Hiroaki Shimizu, Keiji Koshu, Takamasa Kayama, Takashi Yoshimoto

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


MAGNETIC RESONANCE IMAGING (MRI) of titanium anterior cervical plating systems and their effect on postoperative images were evaluated ex vivo and in vivo. The Synthes and Caspar plating systems were examined by 0.5- or 1.5-T MRI scanners. A phantom study of these implants showed that in spin-echo modes, the plates and screws were seen as areas of signal loss accompanying a marginal hyperintense band, which was more obvious in higher tesla magnetic fields. Distortion of the magnetic field was more prominent in T2-weighted images. In gradient echo mode, the plate and screws were seen as areas of signal loss larger than the size of the metal because of the magnetic susceptibility effect. Postoperative MRI produced images of the implants similar to those observed ex vivo. The Synthes plating system did not interfere with the evaluation of the spinal cord, and the Caspar screw (which penetrated the posterior cortex of the vertebral body) caused a small artifact to be present at the anterior aspect of the spinal cord. In addition to being able to provide fixation of the cervical spine, titanium anterior cervical plates allow superior MRI of the postoperative spine.

Original languageEnglish
Pages (from-to)951-955
Number of pages5
Issue number5
Publication statusPublished - 1995 May


  • Cervical spine
  • Magnetic resonance imaging
  • Phantom study
  • Spinal fixation
  • Titanium


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