Snapshot gradient-recalled echo-planar images of rat brains at long echo time at 9.4 T.

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Version: author
Serval ID
serval:BIB_7EA023C848D9
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Snapshot gradient-recalled echo-planar images of rat brains at long echo time at 9.4 T.
Journal
Magnetic Resonance Imaging
Author(s)
Lei H., Mlynárik V., Just N., Gruetter R.
ISSN
0730-725X (Print)
ISSN-L
0730-725X
Publication state
Published
Issued date
2008
Volume
26
Number
7
Pages
954-960
Language
english
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Abstract
With improved B 0 homogeneity along with satisfactory gradient performance at high magnetic fields, snapshot gradient-recalled echo-planar imaging (GRE-EPI) would perform at long echo times (TEs) on the order of T2*, which intrinsically allows obtaining strongly T2*-weighted images with embedded substantial anatomical details in ultrashort time. The aim of this study was to investigate the feasibility and quality of long TE snapshot GRE-EPI images of rat brain at 9.4 T. When compensating for B 0 inhomogeneities, especially second-order shim terms, a 200 x 200 microm2 in-plane resolution image was reproducibly obtained at long TE (>25 ms). The resulting coronal images at 30 ms had diminished geometric distortions and, thus, embedded substantial anatomical details. Concurrently with the very consistent stability, such GRE-EPI images should permit to resolve functional data not only with high specificity but also with substantial anatomical details, therefore allowing coregistration of the acquired functional data on the same image data set.
Keywords
Animals, Brain Mapping/methods, Echo-Planar Imaging/methods, Feasibility Studies, Image Processing, Computer-Assisted, Male, Rats, Rats, Sprague-Dawley, Reproducibility of Results
Pubmed
Web of science
Create date
04/08/2010 15:28
Last modification date
20/08/2019 14:39
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