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  Direct Imaging of Microvascular & Macrovasular Contributions by Time Resolved BOLD fMRI Allows Better Separation of Whisker Rows in the Rodent Barrel Cortex

Yu, X., Dodd, S., Silva, A., & Koretsky, A. (2011). Direct Imaging of Microvascular & Macrovasular Contributions by Time Resolved BOLD fMRI Allows Better Separation of Whisker Rows in the Rodent Barrel Cortex. In 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011).

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0002-4F62-8 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0004-7330-4
Genre: Meeting Abstract

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https://cds.ismrm.org/protected/11MProceedings/files/1_program.htm (Zusammenfassung)
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 Urheber:
Yu, X1, Autor           
Dodd, S, Autor
Silva, A, Autor
Koretsky, A, Autor
Affiliations:
1External Organizations, ou_persistent22              

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 Zusammenfassung: High spatial resolution EPI images could visualize the intracortical vasculature and allow separation of voxels containing large intracortical veins from surrounding voxels enriched with microvasculature. Early positive BOLD response at 0.8 s following stimulus onset mainly encompassed voxels containing the microvasculature. By 1.6 s activation was more prominent in veins even at cortical layer 4. Functional maps of whisker-row specific barrel areas were clearly separated at 0.8s, but were overlapped by large vessels at later times. These results demonstrate that early positive BOLD fMRI response has better spatial specificity to active regions due to exclusion of contributions from cortical veins.

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 Datum: 2011-05
 Publikationsstatus: Erschienen
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Veranstaltung

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Titel: 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011)
Veranstaltungsort: Montréal, Canada
Start-/Enddatum: 2011-05-07 - 2011-05-13

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Titel: 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011)
Genre der Quelle: Konferenzband
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: - Artikelnummer: 1589 Start- / Endseite: - Identifikator: -