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- W3031431489 abstract "Objective To study the accuracy of functional magnetic resonance imaging (fMRI) by comparing the relationship between the preoperative fMRI with blood oxygen level dependent (BOLD) technique and cortical stimulation for cortical mapping of sensorimotor areas in patients with epilepsy.And to estimate the significance of fMRI in localizing the functional areas as well as its clinical application value.Methods A flexion and extension of fingers tasks were used for 14 refractory epilepsy patients,whose EEG demonstrated that the abnormal discharge part was located in sensorimotor areas.A standard 3.0T MR images system was utilized to localize the sensorimotor areas,using the BOLD contrast technique.The BOLD images were integrated with the routine navigational MR images (T1-weighted three-dimensional fast spoiled gradient recalled sequence).All the patients accepted operation twice.In the first operation we implanted cortical electrodes to the abnormal discharge areas.Postoperative continuous CT scan was performed to make sure the relationship between electrodes and skull.The second operation was lesion resection.The CT images were integrated with merged images above by navigation form 3D images,which consisted of activated functional area and electrodes.After the first operation the cortical electrostimulation was also performed,the overlapping was used to adjust the relationship between areas activated by flexion and extension of fingers tasks in BOLD-fMRI and site inducing sensorimotor interruption in postoperative cortical electrostimulatior.Results The activation sites of 14 patients were mainly localized in contralateral precentral gyrus,contralateral postcentral gyrus,supplementary motor area and cerebellum.The cortical electrostimulation results of 11 patients demonstrated that the concordance between fMRI and electrostimulation was found to be 91.7%.Conclusion BOLD-fMRI is a highly sensitive and accuracy technique to locate sensorimotor areas and has a significant clinical application value.Key words: Functional magnetic resonance imaging; Cortical electrostimulation; Refractory epilepsy; Sensorimotor areas; Neuronavigator" @default.
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- W3031431489 date "2010-12-28" @default.
- W3031431489 modified "2023-09-25" @default.
- W3031431489 title "fMRI in preoperative assessment of sensorimotor areas: correlation with direct cortical stimulation" @default.
- W3031431489 doi "https://doi.org/10.3760/cma.j.issn.1001-2346.2010.12.015" @default.
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