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Functional rearrangement of the primary and secondary motor cortex in patients with primary tumors of the central nervous system located in the region of the central sulcus depending on the histopathological type and the size of tumor : examination by means of functional magnetic resonance imaging

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Functional rearrangement of the primary and secondary motor cortex in patients with primary tumors of the central nervous system located in the region of the central sulcus depending on the histopathological type and the size of tumor : examination by means of functional magnetic resonance imaging

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dc.contributor.author Bryszewski, Bartosz pl
dc.contributor.author Pfajfer, Lucjan pl
dc.contributor.author Antosik-Biernacka, Aneta pl
dc.contributor.author Tybor, Krzysztof pl
dc.contributor.author Śmigielski, Janusz pl
dc.contributor.author Zawirski, Marek pl
dc.contributor.author Majos, Agata pl
dc.date.accessioned 2017-09-07T11:20:20Z
dc.date.available 2017-09-07T11:20:20Z
dc.date.issued 2012 pl
dc.identifier.issn 1733-134X pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/43920
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/pl/legalcode *
dc.title Functional rearrangement of the primary and secondary motor cortex in patients with primary tumors of the central nervous system located in the region of the central sulcus depending on the histopathological type and the size of tumor : examination by means of functional magnetic resonance imaging pl
dc.type JournalArticle pl
dc.description.physical 12-20 pl
dc.description.additional Bibliogr. s. 20 pl
dc.abstract.en Background: The aim of this study was to analyze the reorganization of the centers of the motor cortex in patients with primary neuroepithelial tumors of the central nervous system (CNS) located in the region of the central sulcus in relation to the histopathological type and the size of tumor, as determined by means of functional magnetic resonance imaging (fMRI). Material/Methods: The fMRI was performed prior to the surgical treatment of patients with tumors located in the region of the central sulcus (WHO stage I and II, n=15; WHO stage III and IV, n=25). The analysis included a record of the activity in the areas of the primary motor cortex (M1) and the secondary motor cortex: the premotor cortex (PMA) and the accessory motor area (SMA). The results were correlated with the histopathological type of the tumor and its size expressed in cm3. Results: The frequency of activation of the motor center was higher in the group of patients who had less aggressive tumors, such as low-grade glioma (LGG), as well as in tumors of lower volume, and this was true both for the hemisphere where the tumor was located and in the contralateral one. Mean values of t-statistics of activation intensity, mean numbers of activated clusters, and their ranges were lower in all analyzed motor areas of LGG tumors. The values of t-statistics and activation areas were higher in the case of small tumors located in ipsilateral centers, and in large tumors located in contralateral centers, aside from the SMA area where the values of t-statistics were equal for both groups. The contralateral SMA area was characterized by the highest stability of all examined centers of secondary motor cortex. No significant association (p>0.05) was observed between the absolute value of the mean registered activity (t-statistics) and the size of examined areas (number of clusters) when the groups were stratified with regards to the analyzed parameters. Conclusions: The presence of a neoplastic lesion, its histopathological type and finally its size modulate the functional reorganization of the motor centers as suggested by the differences in the frequency of the neural center activation in the analyzed groups. Processes of functional rearrangement are more pronounced and more precisely defined in patients with less aggressive and/or smaller tumors. The contralateral accessory area is the most frequently activated center in all analyzed groups irrespective of the grade and size of the tumor. pl
dc.subject.en neuroplasticity pl
dc.subject.en motor cortex pl
dc.subject.en functional magnetic resonance imaging pl
dc.subject.en glioma pl
dc.description.volume 77 pl
dc.description.number 1 pl
dc.identifier.doi 10.12659/PJR.882576 pl
dc.identifier.eissn 1899-0967 pl
dc.title.journal Polish Journal of Radiology pl
dc.language.container eng pl
dc.subtype Article pl
dc.rights.original CC-BY-NC-ND; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0; pl


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Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne - Bez utworów zależnych 3.0 Polska