Abstract #3232
Effect of Cranial Fixation Plates on Brain MR Imaging at 7T in Neurosurgical Patients
Bixia Chen 1,2 , Tobias Schoemberg 1,2 , Oliver Kraff 1 , Andreas K. Bitz 1,3 , Harald H. Quick 1,4 , Mark Edward Ladd 1,3 , Ulrich Sure 2 , and Karsten Henning Wrede 1,2
1
Erwin L. Hahn Institute for Magnetic
Resonance Imaging, University Duisburg-Essen, Essen,
NRW, Germany,
2
Department
of Neurosurgery, University Hospital Essen, University
Duisburg-Essen, Essen, NRW, Germany,
3
Medical
Physics in Radiology, German Cancer Research Center
(DKFZ), Heidelberg, BW, Germany,
4
High
Field and Hybrid MR Imaging, University Hospital Essen,
University Duisburg-Essen, Essen, NRW, Germany
The importance of ultra-high-field MRI in neuroimaging
is increasing rapidly. Titanium cranial fixation plates
(CFP) are commonly used during neurosurgical operations,
and have been considered MR-conditional in simulations
and head model studies. We evaluated imaging artifacts
in multiple sequences correlated to CFP in vivo. Five
patients were examined before, within 72 hours after,
and 3 months after surgery at 3T, and in a 7T whole-body
MR system using an 8-channel RF head coil. CFP caused
minor artifacts in TOF and MPRAGE at 7T, depiction of
adjacent brain tissue was impaired in SWI due to
susceptibility artifacts, comparable with 3T artifacts.
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