Search Results - "SOTAK, C. H"

Time-Dependent Diffusion of Water in a Biological Model System by Latour, Lawrence L., Svoboda, Karel, Mitra, Partha P., Sotak, Christopher H.

“…Packed erythrocytes are ideally suited as a model system for the study of water diffusion in biological tissue, because cell size, membrane permeability, and…”
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MRI diffusion mapping of reversible and irreversible ischemic injury in focal brain ischemia by HASEGAWA, Y, FISHER, M, LATOUR, L. L, BARDZINSKI, B. J, SOTAK, C. H

“…The reduction of the apparent diffusion coefficient (ADC) of water shortly after a focal ischemic insult is thought to reflect intracellular water accumulation…”
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Diffusion-weighted magnetic resonance imaging : rapid and quantitative detection of focal brain ischemia by MINEMATSU, K, LI, L, FISHER, M, SOTAK, C. H, DAVIS, M. A, FIANDACA, M. S

“…We examined serial changes of diffusion- (DWI) and T2-weighted (T2WI) magnetic resonance images 30 minutes to 3 hours after intraluminal suture occlusion of…”
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Measurement of the spatial redistribution of water in rabbit Achilles tendon in response to static tensile loading by Helmer, K G, Wellen, J, Grigg, P, Sotak, C H

“…The redistribution of water in response to static tensile loading was investigated in rabbit Achilles tendons in vitro. The distribution of water was measured…”
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Multislice diffusion mapping for 3-D evolution of cerebral ischemia in a rat stroke model by Reith, W, Hasegawa, Y, Latour, L L, Dardzinski, B J, Sotak, C H, Fisher, M

“…Article abstract-Diffusion-weighted magnetic resonance imaging (DWI) can quantitatively demonstrate cerebral ischemia within minutes after the onset of…”
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Temporal evolution of ischemic injury evaluated with diffusion-, perfusion-, and T2-weighted MRI by FUHAI LI, SILVA, M. D, SOTAK, C. H, FISHER, M

“…Ischemic lesions seen on diffusion-weighted imaging (DWI) are reversible if reperfusion is performed within minutes after the onset of ischemia. This study was…”
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The role of spreading depression in focal ischemia evaluated by diffusion mapping by Takano, K, Latour, L L, Formato, J E, Carano, R A, Helmer, K G, Hasegawa, Y, Sotak, C H, Fisher, M

“…This study investigated the role of spontaneous and induced spreading depression (SD) on the evolution of focal ischemia in vivo. We induced focal ischemia in…”
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Reversal of acute apparent diffusion coefficient abnormalities and delayed neuronal death following transient focal cerebral ischemia in rats by Li, Fuhai, Han, Sam S., Tatlisumak, Turgut, Liu, Kai-Feng, Garcia, Julio H., Sotak, Christopher H., Fisher, Marc

“…Twenty‐two rats were subjected to 8, 15, 30, or 60 minutes of temporary middle cerebral artery occlusion (n = 5 per group) or sham occlusion (n = 2) in the…”
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Comparison of evoked cortical activity in conscious and propofol-anesthetized rats using functional MRI by Lahti, Katariina M., Ferris, Craig F., Li, Fuhai, Sotak, Christopher H., King, Jean A.

“…Changes in cortical activity during foot shock were assessed under conscious and propofol‐anesthetized conditions using functional magnetic resonance imaging…”
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Effects of a novel NMDA antagonist on experimental stroke rapidly and quantitatively assessed by diffusion-weighted MRI by MINEMATSU, K, FISHER, M, LI, L, DAVIS, M. A, KNAPP, A. G, COTTER, R. E, MCBURNEY, R. N, SOTAK, C. H

“…We employed diffusion-weighted MRI (DWI) to identify regions of focal brain ischemia during the first 3 hours after permanent occlusion of the middle cerebral…”
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Application of porous-media theory to the investigation of water ADC changes in rabbit Achilles tendon caused by tensile loading by Wellen, J., Helmer, K.G., Grigg, P., Sotak, C.H.

“…The water apparent diffusion coefficient (ADC) in rabbit Achilles tendon is anisotropic, diffusion-time dependent, and changes as a function of tensile load…”
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Reversible focal ischemic injury demonstrated by diffusion-weighted magnetic resonance imaging in rats by Minematsu, K, Li, L, Sotak, C H, Davis, M A, Fisher, M

“…Diffusion-weighted magnetic resonance imaging (DWI) can quantitatively display focal brain abnormalities within minutes after the onset of ischemia. We…”
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Efficacy of intra-arterial and intravenous prourokinase in an embolic stroke model evaluated by diffusion-perfusion magnetic resonance imaging by TAKANO, K, CARANO, R. A. D, TATLISUMAK, T, MEILER, M, SOTAK, C. H, KLEINERT, H. D, FISHER, M

“…To explore the utility of intravenous (i.v.) prourokinase treatment, we compared intra-arterial (i.a.) and i.v. delivery in a rat embolic stroke model, using…”
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Imaging brain activity in conscious animals using functional MRI by Lahti, Katariina M, Ferris, Craig F, Li, Fuhai, Sotak, Christopher H, King, Jean A

“…Functional magnetic resonance imaging (fMRI) in humans has helped improve our understanding of the neuroanatomical organization of behavior. Unfortunately,…”
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Apparent diffusion coefficient mapping of experimental focal cerebral ischemia using diffusion-weighted echo-planar imaging by Dardzinski, B J, Sotak, C H, Fisher, M, Hasegawa, Y, Li, L, Minematsu, K

“…Diffusion-weighted, echo-planar imaging (EPI) was used to map regional changes in the apparent diffusion coefficient (ADC) during experimental focal ischemia…”
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Changes in ADC Caused by Tensile Loading of Rabbit Achilles Tendon: Evidence for Water Transport by Han, S, Gemmell, S.J, Helmer, K.G, Grigg, P, Wellen, J.W, Hoffman, A.H, Sotak, C.H

“…Water diffusion measurements were performed on rabbit Achilles tendons during static tensile loading and tendons in an unloaded state. The apparent diffusion…”
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Spreading waves of a reduced diffusion coefficient of water in normal and ischemic rat brain by Hasegawa, Y, Latour, L L, Formato, J E, Sotak, C H, Fisher, M

“…Using echo planar diffusion-weighted magnetic resonance imaging, we measured three-dimensional changes in the apparent diffusion coefficient (ADC) of water in…”
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Effects of diffusion anisotropy on lesion delineation in a rat model of cerebral ischemia by Lythgoe, M F, Busza, A L, Calamante, F, Sotak, C H, King, M D, Bingham, A C, Williams, S R, Gadian, D G

“…The effects of white and gray matter diffusion anisotropy on ischemic lesion delineation have been studied in the rat model of middle cerebral artery…”
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Spatial characterization of T1 and T2 relaxation times and the water apparent diffusion coefficient in rabbit Achilles tendon subjected to tensile loading by Wellen, J., Helmer, K. G., Grigg, P., Sotak, C. H.

“…Tendons exhibit viscoelastic mechanical behavior under tensile loading. The elasticity arises from the collagen chains that form fibrils, while the viscous…”
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The application of porous-media theory to the investigation of time-dependent diffusion in in vivo systems by Helmer, K G, Dardzinski, B J, Sotak, C H

“…Recent developments in solid-boundary porous-media theory have shown that useful structural information can be extracted from the time-dependent diffusion…”
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