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Cranial fixation plates in cerebral magnetic resonance imaging: a 3 and 7 Tesla in vivo image quality study

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Abstract

Objective

This study assesses and quantifies impairment of postoperative magnetic resonance imaging (MRI) at 7 Tesla (T) after implantation of titanium cranial fixation plates (CFPs) for neurosurgical bone flap fixation.

Materials and methods

The study group comprised five patients who were intra-individually examined with 3 and 7 T MRI preoperatively and postoperatively (within 72 h/3 months) after implantation of CFPs. Acquired sequences included T1-weighted magnetization-prepared rapid-acquisition gradient-echo (MPRAGE), T2-weighted turbo-spin-echo (TSE) imaging, and susceptibility-weighted imaging (SWI). Two experienced neurosurgeons and a neuroradiologist rated image quality and the presence of artifacts in consensus reading.

Results

Minor artifacts occurred around the CFPs in MPRAGE and T2 TSE at both field strengths, with no significant differences between 3 and 7 T. In SWI, artifacts were accentuated in the early postoperative scans at both field strengths due to intracranial air and hemorrhagic remnants. After resorption, the brain tissue directly adjacent to skull bone could still be assessed. Image quality after 3 months was equal to the preoperative examinations at 3 and 7 T.

Conclusion

Image quality after CFP implantation was not significantly impaired in 7 T MRI, and artifacts were comparable to those in 3 T MRI.

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Author information

Authors and Affiliations

  1. Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany

    Bixia Chen, Tobias Schoemberg, Oliver Kraff, Philipp Dammann, Andreas K. Bitz, Harald H. Quick, Mark E. Ladd & Karsten H. Wrede

  2. Department of Neurosurgery, University Hospital Essen, Essen, Germany

    Bixia Chen, Tobias Schoemberg, Philipp Dammann, Ulrich Sure & Karsten H. Wrede

  3. Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany

    Andreas K. Bitz & Mark E. Ladd

  4. Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

    Marc Schlamann

  5. Department of Neuroradiology, University Hospital Giessen, Giessen, Germany

    Marc Schlamann

  6. High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany

    Harald H. Quick

Authors
  1. Bixia Chen
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  2. Tobias Schoemberg
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  3. Oliver Kraff
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  4. Philipp Dammann
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  5. Andreas K. Bitz
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  6. Marc Schlamann
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  7. Harald H. Quick
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  8. Mark E. Ladd
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  9. Ulrich Sure
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  10. Karsten H. Wrede
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Corresponding author

Correspondence to Bixia Chen.

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Funding

This study was funded by Interne Forschungsförderung Essen (IFORES), University Hospital Essen, University Duisburg-Essen (grant number D/107-40770).

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Chen, B., Schoemberg, T., Kraff, O. et al. Cranial fixation plates in cerebral magnetic resonance imaging: a 3 and 7 Tesla in vivo image quality study. Magn Reson Mater Phy 29, 389–398 (2016). https://doi.org/10.1007/s10334-016-0548-1

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  • DOI: https://doi.org/10.1007/s10334-016-0548-1

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