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- W2324896746 abstract "Purpose: To investigate the efficiency or potency of functional MRI (fMRI) for the determination of language dominance by comparing the results of fMRI with those of the Wada test. Materials and Methods: Among 34 patients with intractable seizure who underwent both fMRI and the Wada test, we analyzed the results of 30 (men:women=19:11; mean age=29.7 years). Using echoplanar imaging and the blood oxygen level dependent technique, fMRI was performed using a 1.5 T MR imager with a standard head coil. The language task consisted of two parts: reading words and generating words. For fMRI, a multi-event multi-task paradigm consisting of two sets of activation, rest, and alternative periods was used. Image processing involved the use of the Z test (Z threshold = 1.0 -1.2). To determine the lateralization index, we calculated the activation pixels within the whole frontal cortex., and to ascertain the discrepancy between the two tasks, the clustering grade of activation pixels was measured. After the injection of thiopental, language dominance was determined by means of a modified Wada test. The results of this and the findings of fMRI were compared with the results of Fisher ’s exact test (p 0.05). Conclusion: For the determination of language dominance, fMRI showed good correlation with the Wada test. The word generation task was more efficient than the reading task. fMRI which is non-invasive and repeatable, is therefore more efficient and useful than the invasive Wada test." @default.
- W2324896746 created "2016-06-24" @default.
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- W2324896746 date "2000-01-01" @default.
- W2324896746 modified "2023-09-25" @default.
- W2324896746 title "Determination of Language Dominance Using Functional MRI in Patients with Intractable Seizure: Comparison with Wada Test" @default.
- W2324896746 doi "https://doi.org/10.3348/jkrs.2000.42.5.721" @default.
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