| Online-Ressource |
Verfasst von: | Partovi, Sasan [VerfasserIn]  |
| Rapps, Nora [VerfasserIn]  |
| Rengier, Fabian [VerfasserIn]  |
| Stippich, Christoph [VerfasserIn]  |
Titel: | Clinical standardized fMRI reveals altered language lateralization in brain tumor patients |
Verf.angabe: | S. Partovi, B. Jacobi, N. Rapps, L. Zipp, S. Karimi, F. Rengier, J. K. Lyo, C. Stippich |
Jahr: | 2012 |
Umfang: | 7 S. |
Fussnoten: | Published online December 13, 2012 ; Gesehen am 25.06.2018 |
Titel Quelle: | Enthalten in: American journal of neuroradiology |
Ort Quelle: | Oak Brook, Ill. : Soc., 1980 |
Jahr Quelle: | 2012 |
Band/Heft Quelle: | 33(2012), 11, Seite 2151-2157 |
ISSN Quelle: | 1936-959X |
Abstract: | BACKGROUND AND PURPOSE: Brain tumors affecting language-relevant areas may influence language lateralization. The purpose of this study was to systematically investigate language lateralization in brain tumor patients using clinical language fMRI, comparing the results with a group of healthy volunteers. MATERIALS AND METHODS: Fifty-seven strictly right-handed patients with left-hemispheric-space intracranial masses (mainly neoplastic) affecting either the Broca area (n = 19) or Wernicke area (n = 38) were prospectively enrolled in this study. Fourteen healthy volunteers served as a control group. Standardized clinical language fMRI, using visually triggered sentence- and word-generation paradigms, was performed on a 1.5T MR scanner. Semiautomated analyses of all functional data were conducted on an individual basis using BrainVoyager. A regional lateralization index was calculated for Broca and Wernicke areas separately versus their corresponding right-hemisphere homologs. RESULTS: In masses affecting the Broca area, a significant decrease in the lateralization index was found when performing word generation (P = .0017), whereas when applying sentence generation, the decrease did not reach statistical significance (P = .851). Masses affecting the Wernicke area induced a significant decrease of the lateralization index when performing sentence generation (P = .0007), whereas when applying word generation, the decrease was not statistically significant (P = .310). CONCLUSIONS: Clinical language fMRI was feasible for patients with brain tumors and provided relevant presurgical information by localizing essential language areas and determining language dominance. A significant effect of the brain masses on language lateralization was observed, with a shift toward the contralesional, nondominant hemisphere. This may reflect compensatory mechanisms of the brain to maintain communicative abilities. |
DOI: | doi:10.3174/ajnr.A3137 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: http://dx.doi.org/10.3174/ajnr.A3137 |
| Volltext: http://www.ajnr.org/content/early/2012/05/17/ajnr.A3137 |
| DOI: https://doi.org/10.3174/ajnr.A3137 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1576821617 |
Verknüpfungen: | → Zeitschrift |
Clinical standardized fMRI reveals altered language lateralization in brain tumor patients / Partovi, Sasan [VerfasserIn]; 2012 (Online-Ressource)