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Determination of the dominant language hemisphere by functional MRI in patients with temporal lobe epilepsy
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Abstract
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Objective To determine the dominant language hemisphere in patients with intractable temporal lobe epilepsy before surgical treatment by using functional MRI (fMRI). Methods Twelve patients underwent fMRI. Among them, 4 patients also underwent the Wada test. Anterior temporal lobectomy was performed on patients with epileptic focus on the non-dominant hemisphere, and selective amygdalo-hippocampectomy on patients with epileptic focus on the dominant hemisphere. Results Ten patients had left dominance, and 2 right dominance. The fMRI results were concordant with Wada test results in the 4 patients who accepted the Wada. test. Seven patients underwent anterior temporal lobectomy, and 5 underwent selective amygdalo-hippocampectomy. There was no post-operative dysphasia. Conclusion fMRI is an alternative method of noninvasive functional mapping for language dominance in patients with temporal lobe epilepsy.
Keywords:
functional MRI
temporal lobe epilepsy
language
operation
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