Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Lisa Willats"'
Autor:
Fernando Calamante, David Raffelt, Jacques-Donald Tournier, Robert E. Smith, Alan Connelly, Lisa Willats, Richard A.J. Masterton
Publikováno v:
NeuroImage. 70:199-210
MRI provides a powerful tool for studying the functional and structural connections in the brain non-invasively. The technique of functional connectivity (FC) exploits the intrinsic temporal correlations of slow spontaneous signal fluctuations to cha
Autor:
Lisa Willats, Fernando Calamante
Publikováno v:
NMR in Biomedicine. 26:913-931
Dynamic susceptibility contrast (DSC) MRI is the most commonly used MRI method to assess cerebral perfusion and other related haemodynamic parameters. Although the technique is well established and used routinely in clinical centres, there are still
Autor:
Geoffrey A. Donnan, Soren Christensen, Lisa Willats, Henry Ma, Alan Connelly, Fernando Calamante
Publikováno v:
Journal of Cerebral Blood Flow & Metabolism. 31:2189-2198
In bolus-tracking perfusion magnetic resonance imaging (MRI), temporal dispersion of the contrast bolus due to stenosis or collateral supply presents a significant problem for accurate perfusion quantification in stroke. One means to reduce the assoc
Publikováno v:
NMR in Biomedicine. 21:1126-1137
Bolus-tracking perfusion measurements in patients with vascular abnormalities are often unreliable, because delay and/or dispersion of the bolus within the vessels distorts the measured arterial input function (AIF). Erroneous measurements of perfusi
Publikováno v:
Magnetic Resonance in Medicine. 56:146-156
Cerebral blood flow (CBF) is commonly estimated from the maximum of the residue function deconvolved from bolus-tracking data. The bolus may become delayed and/or dispersed in the vessels feeding the tissue, resulting in the calculation of an effecti
Publikováno v:
Magnetic Resonance in Medicine. 55:1180-1185
Perfusion maps, which are calculated from dynamic-susceptibility contrast (DSC)-MRI data by deconvolution of the arterial input function (AIF), are commonly used to predict tissue infarction in acute stroke. However, since the AIF is commonly measure
Autor:
Robert E. Smith, Lisa Willats, David Raffelt, Jacques-Donald Tournier, Fernando Calamante, Alan Connelly
Publikováno v:
NeuroImage. 87
Recently several novel image contrasts derived from whole-brain fibre tracking-data (tractograms) have been introduced. The novel contrasts of these track-weighted imaging (TWI) methods may provide important information for clinical neuroscience stud
Autor:
Geoffrey A. Donnan, Soren Christensen, Stephen M. Davis, Fernando Calamante, Lisa Willats, Alan Connelly
Publikováno v:
Stroke. 43(4)
Background and Purpose— In combination with diffusion-weighted imaging, perfusion-weighted imaging parameters are hypothesized to detect tissue at risk of infarction in patients with acute stroke. Recent studies have suggested that in addition to p
Autor:
Lisa, Willats, Fernando, Calamante
Publikováno v:
NMR in biomedicine. 26(8)
Dynamic susceptibility contrast (DSC) MRI is the most commonly used MRI method to assess cerebral perfusion and other related haemodynamic parameters. Although the technique is well established and used routinely in clinical centres, there are still