Cranial Fixation Plates in Cerebral Magnetic Resonance Imaging: a 3 and 7 Tesla in Vivo Image Quality Study

Overview

Journal MAGMA

Publisher Springer

Date 2016 Mar 31

PMID 27026243

Citations 7

Authors

Bixia Chen

Tobias Schoemberg

Oliver Kraff

Philipp Dammann

Andreas K Bitz

Marc Schlamann

Harald H Quick

Mark E Ladd

Ulrich Sure

Karsten H Wrede

Affiliations

Soon will be listed here.

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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