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National Institutes of Health

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Highly Cited
2011
Highly Cited
2011
BACKGROUND AND PURPOSE CT perfusion (CTP) is widely and rapidly accessible for imaging acute ischemic stroke but has limited… (More)
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Highly Cited
2010
Highly Cited
2010
PURPOSE To report our preliminary experience with the use of intravoxel incoherent motion (IVIM) diffusion-weighted magnetic… (More)
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Highly Cited
2008
Highly Cited
2008
BACKGROUND AND PURPOSE Perfusion magnetic resonance imaging (pMR) is increasingly used in acute stroke, but its physiologic… (More)
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Highly Cited
2007
Highly Cited
2007
Functional MRI is based on changes in cerebral microvasculature triggered by increased neuronal oxidative metabolism. This change… (More)
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Highly Cited
2005
Highly Cited
2005
BACKGROUND AND PURPOSE The Echoplanar Imaging Thrombolysis Evaluation Trial (EPITHET) tests the hypothesis that perfusion… (More)
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2004
2004
BACKGROUND AND PURPOSE Comparing the temporal characteristics of hemodynamic responses in activated cortical regions of aphasic… (More)
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Highly Cited
2004
Highly Cited
2004
Diffusion-weighted MRI (DWI) in combination with perfusion-weighted MRI (PWI) has become a widely accepted modality for the… (More)
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Highly Cited
2004
Highly Cited
2004
The blood oxygenation level-dependent (BOLD) responses to visual stimuli, using both a 1-s long single trial stimulus and a 20-s… (More)
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Highly Cited
2002
Highly Cited
2002
BACKGROUND AND PURPOSE Various calculation methods are available to estimate the transit-time on MR perfusion-weighted imaging… (More)
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Highly Cited
2000
Highly Cited
2000
BACKGROUND AND PURPOSE Because cerebral perfusion imaging for acute stroke is unavailable in most hospitals, we investigated the… (More)
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