Reproducibility of Functional Transcranial Doppler Sonography in Determining Hemispheric Language Lateralization
نویسندگان
چکیده
منابع مشابه
Reproducibility of functional transcranial Doppler sonography in determining hemispheric language lateralization.
BACKGROUND AND PURPOSE Since functional transcranial Doppler ultrasonography (fTCD) allows convenient and fully automated quantification of language lateralization, it seems ideal for longitudinal studies of perfusion changes during deterioration as well as recovery of language functions. However, during serial examinations, the technical, stochastic, and physiological variabilities of cerebral...
متن کاملNoninvasive Determination of Language Lateralization by Functional Transcranial Doppler Sonography
Background and Purpose—Functional transcranial Doppler ultrasonography (fTCD) can assess event-related changes in cerebral blood flow velocities and, by comparison between sides, can provide a measure of hemispheric perfusional lateralization. It is easily applicable, insensitive to movement artifacts, and can be used in patients with less than perfect cooperation. In the present study we inves...
متن کاملNoninvasive determination of language lateralization by functional transcranial Doppler sonography: a comparison with the Wada test.
BACKGROUND AND PURPOSE Functional transcranial Doppler ultrasonography (fTCD) can assess event-related changes in cerebral blood flow velocities and, by comparison between sides, can provide a measure of hemispheric perfusional lateralization. It is easily applicable, insensitive to movement artifacts, and can be used in patients with less than perfect cooperation. In the present study we inves...
متن کاملInvestigating language lateralization during phonological and semantic fluency tasks using functional transcranial Doppler sonography
Although there is consensus that the left hemisphere plays a critical role in language processing, some questions remain. Here we examine the influence of overt versus covert speech production on lateralization, the relationship between lateralization and behavioural measures of language performance and the strength of lateralization across the subcomponents of language. The present study used ...
متن کاملDetermination of cognitive hemispheric lateralization by "functional" transcranial Doppler cross-validated by functional MRI.
BACKGROUND AND PURPOSE Changes of blood flow velocity in the right and left middle cerebral artery (MCA) induced by cognitive demands are detectable by means of "functional" transcranial Doppler sonography (fTCD). Functional MRI (fMRI) is an alternative method for mapping brain activity. The purpose of this study was to determine whether fTCD can detect hemispheric lateralization and to cross-v...
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ژورنال
عنوان ژورنال: Stroke
سال: 1998
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.29.6.1155