MB-SWIFT functional MRI during deep brain stimulation in rats.

Citation data:

NeuroImage, ISSN: 1095-9572, Vol: 159, Page: 443-448

Publication Year:
2017
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PMID:
28797739
DOI:
10.1016/j.neuroimage.2017.08.012
Author(s):
Lehto, Lauri J, Idiyatullin, Djaudat, Zhang, Jinjin, Utecht, Lynn, Adriany, Gregor, Garwood, Michael, Gröhn, Olli, Michaeli, Shalom, Mangia, Silvia
Publisher(s):
Elsevier BV
Tags:
Neuroscience
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article description
Recently introduced 3D radial MRI pulse sequence entitled Multi-Band SWeep Imaging with Fourier Transformation (MB-SWIFT) having virtually zero acquisition delay was used to obtain functional MRI (fMRI) contrast in rat's brain at 9.4 T during deep brain stimulation (DBS). The results demonstrate that MB-SWIFT allows functional images free of susceptibility artifacts, and provides an excellent fMRI activation contrast in the brain. Flip angle dependence of the MB-SWIFT fMRI signal and elimination of the fMRI contrast while using saturation bands, indicate a blood flow origin of the observed fMRI contrast. MB-SWIFT fMRI modality permits activation studies in the close proximity to an implanted lead, which is not possible to achieve with conventionally used gradient echo and spin echo - echo planar imaging fMRI techniques. We conclude that MB-SWIFT fMRI is a powerful imaging modality for investigations of functional responses during DBS.

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