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European Radiology
Published in: European Radiology 6/2005

01-06-2005 | Neuro

Cortical mapping by functional magnetic resonance imaging in patients with brain tumors

Authors: Agata Majos, Krzysztof Tybor, Ludomir Stefańczyk, Bożena Góraj

Published in: European Radiology | Issue 6/2005

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Abstract

The aim of our study was to establish the effectiveness of the functional MRI (fMRI) technique in comparison with intraoperative cortical stimulation (ICS) in planning cortex-saving neurosurgical interventions. The combination of sensory and motor stimulation during fMRI experiments was used to improve the exactness of central sulcus localization. The study subjects were 30 volunteers and 33 patients with brain tumors in the rolandic area. Detailed topographical relations of activated areas in fMRI and intraoperative techniques were compared. The agreement in the location defined by the two methods for motor centers was found to be 84%; for sensory centers it was 83%. When both kinds of activation are taken into account this agreement increases to 98%. A significant relation was found between fMRI and ICS for the agreement of the distance both for motor and sensory centers (p=0.0021–0.0024). Also a strong dependence was found between the agreement of the location and the agreement of the distance for both kinds of stimulation. The spatial correlation between fMRI and ICS methods for the sensorimotor cortex is very high. fMRI combining functional and structural information is very helpful for preoperative neurosurgical planning. The sensitivity of the fMRI technique in brain mapping increases when using both motor and sensory paradigms in the same patient.
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Metadata
Title
Cortical mapping by functional magnetic resonance imaging in patients with brain tumors
Authors
Agata Majos
Krzysztof Tybor
Ludomir Stefańczyk
Bożena Góraj
Publication date
01-06-2005
Publisher
Springer-Verlag
Published in
European Radiology / Issue 6/2005
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-004-2565-0

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