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@ARTICLE{Gembris:810622,
author = {Gembris, Daniel and Taylor, John G. and Schor, Stefan and
Frings, Wolfgang and Suter, Dieter and Posse, Stefan},
title = {{F}unctional magnetic resonance imaging in real time
({FIRE}): {S}liding-window correlation analysis and
reference-vector optimization},
journal = {Magnetic resonance in medicine},
volume = {43},
number = {2},
issn = {0740-3194},
address = {New York, NY [u.a.]},
publisher = {Wiley-Liss},
reportid = {FZJ-2016-03282},
pages = {259-268},
year = {2000},
abstract = {New algorithms for correlation analysis are presented that
allow the mapping of brain activity from functional MRI
(fMRI) data in real time during the ongoing scan. They
combine the computation of the correlation coefficients
between measured fMRI time-series data and a reference
vector with “detrending,” a technique for the
suppression of non-stimulus-related signal components, and
the “sliding-window technique.” Using this technique,
which limits the correlation computation to the last N
measurement time points, the sensitivity to changes in brain
activity is maintained throughout the whole experiment. For
increased sensitivity in activation detection a fast and
robust optimization of the reference vector is proposed,
which takes into account a realistic model of the
hemodynamic response function to adapt the parameterized
reference vector to the measured data. Based on the
described correlation method, real-time fMRI experiments
using visual stimulation paradigms have been performed
successfully on a clinical MR scanner, which was linked to
an external workstation for image analysis.},
cin = {JSC / IME / ZAM},
ddc = {610},
cid = {I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)VDB54 /
I:(DE-Juel1)VDB62},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000084993500013},
doi = {10.1002/(SICI)1522-2594(200002)43:2<259::AID-MRM13>3.0.CO;2-P},
url = {https://juser.fz-juelich.de/record/810622},
}