KOPS - Das Institutionelle Repositorium der Universität Konstanz

A novel in vivo atlas of human hippocampal subfields using high-resolution 3T magnetic resonance imaging

A novel in vivo atlas of human hippocampal subfields using high-resolution 3T magnetic resonance imaging

Zitieren

Dateien zu dieser Ressource

Dateien Größe Format Anzeige

Zu diesem Dokument gibt es keine Dateien.

WINTERBURN, Julie L., Jens C. PRUESSNER, Sofia CHAVEZ, Mark M. SCHIRA, Nancy J. LOBAUGH, Aristotle N. VOINESKOS, M. Mallar CHAKRAVARTY, 2013. A novel in vivo atlas of human hippocampal subfields using high-resolution 3T magnetic resonance imaging. In: NeuroImage. 74, pp. 254-265. ISSN 1053-8119. eISSN 1095-9572

@article{Winterburn2013-07novel-38449, title={A novel in vivo atlas of human hippocampal subfields using high-resolution 3T magnetic resonance imaging}, year={2013}, doi={10.1016/j.neuroimage.2013.02.003}, volume={74}, issn={1053-8119}, journal={NeuroImage}, pages={254--265}, author={Winterburn, Julie L. and Pruessner, Jens C. and Chavez, Sofia and Schira, Mark M. and Lobaugh, Nancy J. and Voineskos, Aristotle N. and Chakravarty, M. Mallar} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/38449"> <dc:creator>Lobaugh, Nancy J.</dc:creator> <dc:contributor>Chakravarty, M. Mallar</dc:contributor> <dc:creator>Pruessner, Jens C.</dc:creator> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-04-10T09:55:26Z</dc:date> <dc:creator>Voineskos, Aristotle N.</dc:creator> <dc:contributor>Schira, Mark M.</dc:contributor> <dcterms:issued>2013-07</dcterms:issued> <dcterms:abstract xml:lang="eng">The hippocampus is a neuroanatomical structure that has been widely studied in the context of learning, memory, stress, and neurodegeneration. Neuroanatomically, the hippocampus is subdivided into several subfields with intricate morphologies and complex three-dimensional relationships. Recent studies have demonstrated that the identification of different subfields is possible with high-resolution and -contrast image volumes acquired using ex vivo specimens in a small bore 9.4 T scanner and, more recently, in vivo, at 7 T. In these studies, the neuroanatomical definitions of boundaries between subfields are based upon salient differences in image contrast. Typically, the definition of subfields has not been possible using commonly available magnetic resonance (MR) scanners (i.e.: 1.5 or 3T) due to resolution and contrast limitations. To overcome the limited availability of post-mortem specimens and expertise in state-of-the-art high-field imaging, we propose a coupling of MR acquisition and detailed segmentation techniques that allow for the reliable identification of hippocampal anatomy (including subfields). High-resolution and -contrast T1- and T2-weighted image volumes were acquired from 5 volunteers (2 male; 3 female; age range: 29-57, avg. 37) using a clinical research-grade 3T scanner and have final super-sampled isotropic voxel dimensions of 0.3mm. We demonstrate that by using these acquisition techniques, our data results in contrast-to-noise ratios that compare well with high-resolution images acquired with long scan times using post-mortem data at higher field strengths. For the subfields, the cornus ammonis (CA) 1, CA2/CA3, CA4/dentate gyrus, stratum radiatum/stratum lacunosum/stratum moleculare, and subiculum were all labeled as separate structures. Hippocampal volumes are reported for each of the substructures and the hippocampus as a whole (range for hippocampus: 2456.72-3325.02 mm(3)). Intra-rater reliability of our manual segmentation protocol demonstrates high reliability for the whole hippocampus (mean Dice Kappa of 0.91; range 0.90-0.92) and for each of the subfields (range of Dice Kappas: 0.64-0.83). We demonstrate that our reliability is better than the Dice Kappas produced by simulating the following errors: a translation by a single voxel in all cardinal directions and 1% volumetric shrinkage and expansion. The completed hippocampal atlases are available freely online (info2.camh.net/kf-tigr/index.php/Hippocampus) and can be coupled with novel computational neuroanatomy techniques that will allow for them to be customized to the unique neuroanatomy of different subjects, and ultimately be utilized in different analysis pipelines.</dcterms:abstract> <dc:contributor>Winterburn, Julie L.</dc:contributor> <dc:creator>Chavez, Sofia</dc:creator> <dc:contributor>Pruessner, Jens C.</dc:contributor> <dcterms:title>A novel in vivo atlas of human hippocampal subfields using high-resolution 3T magnetic resonance imaging</dcterms:title> <dc:creator>Chakravarty, M. Mallar</dc:creator> <dc:contributor>Lobaugh, Nancy J.</dc:contributor> <dc:contributor>Voineskos, Aristotle N.</dc:contributor> <dc:creator>Winterburn, Julie L.</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/38449"/> <dc:creator>Schira, Mark M.</dc:creator> <dc:contributor>Chavez, Sofia</dc:contributor> <dc:language>eng</dc:language> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-04-10T09:55:26Z</dcterms:available> </rdf:Description> </rdf:RDF>

Das Dokument erscheint in:

KOPS Suche


Stöbern

Mein Benutzerkonto