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A combined MR and CT study for precise quantitative analysis of the avian brain

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    SYSNO ASEP0454204
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleA combined MR and CT study for precise quantitative analysis of the avian brain
    Author(s) Jirák, D. (CZ)
    Janáček, Jiří (FGU-C) RID, ORCID
    Kear, B. P. (SE)
    Source TitleScientific Reports. - : Nature Publishing Group - ISSN 2045-2322
    Roč. 5, Oct 30 (2015), s. 16002
    Number of pages7 s.
    Languageeng - English
    CountryGB - United Kingdom
    Keywordsavian brain ; magnetic resonance imaging ; computed tomography ; Fakir probe
    Subject RIVEA - Cell Biology
    R&D ProjectsGAP302/12/1207 GA ČR - Czech Science Foundation (CSF)
    Institutional supportFGU-C - RVO:67985823
    UT WOS000363760700001
    EID SCOPUS84946105807
    DOI10.1038/srep16002
    AnnotationBrain size is widely used as a measure of behavioural complexity and sensory-locomotive capacity in avians but has largely relied upon laborious dissections, endoneurocranial tissue displacement, and physical measurement to derive comparative volumes. As an alternative, we present a new precise calculation method based upon coupled magnetic resonance (MR) imaging and computed tomography (CT). Our approach utilizes a novel interactive Fakir probe cross-referenced with an automated CT protocol to efficiently generate total volumes and surface areas of the brain tissue and endoneurocranial space, as well as the discrete cephalic compartments. We also complemented our procedures by using sodium polytungstate (SPT) as a contrast agent. This greatly enhanced CT applications but did not degrade MR quality and is therefore practical for virtual brain tissue reconstructions employing multiple imaging modalities. To demonstrate our technique, we visualized sex-based brain size differentiation in a sample set of Ring-necked pheasants (Phasianus colchicus). This revealed no significant variance in relative volume or surface areas of the primary brain regions. Rather, a trend towards isometric enlargement of the total brain and endoneurocranial space was evidenced in males versus females, thus advocating a non-differential sexually dimorphic pattern of brain size increase amongst these facultatively flying birds
    WorkplaceInstitute of Physiology
    ContactLucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400
    Year of Publishing2016
Number of the records: 1  

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