blood oxygen level dependent imaging
The Effects of Acetazolamide on the Evaluation of Cerebral Hemodynamics and Functional Connectivity Using Blood Oxygen Level–Dependent MR Imaging in Patients with Chronic Steno Occlusive Disease of the Anterior Circulation
... ditionally relied on MR imaging or CT perfusion imaging with the use of a contrast agent. Although the quantitative value of DSC in evaluating patients with chronic cerebrovascular disease remains to be ...
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Quantification of Cerebrovascular Reactivity by Blood Oxygen Level–Dependent MR Imaging and Correlation with Conventional Angiography in Patients with Moyamoya Disease
... collaterals. Blood flow distal to these stenotic vessels is thought to be maintained by a drop in vascular resistance mediated by small artery and arte- riolar ...
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Identification of the Corticospinal Tracts Achieved Using Blood oxygen level–dependent and Diffusion Functional MR Imaging in Patients with Brain Tumors
... MR imaging was performed to define the location of motor cortex in relation to the lesion and to register it to a surgical navigation system for real-time intraoperative localization as described by Maldjian et al ...
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Detection of renal allograft rejection using blood oxygen level-dependent and diffusion weighted magnetic resonance imaging: a retrospective study
... the level of oxygen bioavailability increased in the medulla of AR ...of oxygen delivery by blood ...perfusion, oxygen bioavailability in the kidneys of porcine models and found that ...
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Insights into Adult Postlesional Language Cortical Plasticity Provided by Cerebral Blood Oxygen Level–Dependent Functional MR Imaging
... MR imaging scanner, with preprocessing and statistical analysis conducted by using SPM (SPM99, Wellcome Department of Cognitive Neurology, London, United Kingdom [Friston 4 ]) implemented in Matlab ...
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The effect of intellectual ability on functional activation in a neurodevelopmental disorder: preliminary evidence from multiple fMRI studies in Williams syndrome
... ance imaging (fMRI) to compare individuals with ID to typically developing individuals, there is a possibility that differences in IQ contribute to between-group differ- ences in blood oxygen ...
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The Effect of Prior Surgery on Blood Oxygen Level–Dependent Functional MR Imaging in the Preoperative Assessment of Brain Tumors
... PURPOSE: Blood oxygen level– dependent functional MR imaging (BOLD fMRI) is a clinically useful technique for preoperative mapping of eloquent cortices in patients with brain ...
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The Influence of Gliomas and Nonglial Space occupying Lesions on Blood oxygen level–dependent Contrast Enhancement
... fMR imaging was considered successful if the sensorimotor cortex on the contralateral hemi- sphere could be localized because of the BOLD contrast enhancement or if the participants had co- operated during the ...
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4D Image Analysis And Diagnosis Of Kidney Disease Using Dce-Mri Images
... gray level co-occurrence ...of Blood Oxygen Level Dependent (BOLD) measurement, also the challenges with respiratory and bulk motion of tissues are critical to measure in function renal ...
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Origin of Synchronized Low Frequency Blood Oxygen Level–Dependent Fluctuations in the Primary Visual Cortex
... in blood oxygen level– dependent (BOLD) signal intensity among functionally related brain re- gions, 1 the application of functional MR imaging (fMRI) to studying functional ...
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Multivariate Classification of Blood Oxygen Level–Dependent fMRI Data with Diagnostic Intention: A Clinical Perspective
... Still, imaging-based multivariate tools might be able to provide clinically useful additional infor- mation: When important information (eg, regarding prognosis) is, by definition, not deducible from the course of ...
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The Blood Oxygen Level–Dependent Functional MR Imaging Signal Can Be Used to Identify Brain Tumors and Distinguish Them from Normal Tissue
... correlation level, R, all related signals in the brain are displayed simultaneously; changing the correlation level identifies voxels that are not as closely related to the initial ...
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Systemic Theophylline Augments the Blood Oxygen Level—Dependent Response to Forepaw Stimulation in Rats
... To qualitatively detect areas of BOLD activation, prelimi- nary analysis was performed during the experiment (Func- Tools; GE Medical Systems) on a UNIX-based workstation. Images were then extracted into Digital ...
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Altered blood oxygen level-dependent signal variability in chronic post-traumatic stress disorder during symptom provocation
... Lingjiang Li and Guangming Lu designed the research study. Li Zhang, Weihui Li, and Cailan Hou conducted the clinical assessment. Zhong He collected the imaging data. Rongfeng Qi, Qiang Xu, Yuan Zhong, and ...
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Blood oxygenation level-dependent magnetic resonance imaging during carbogen breathing: differentiation between prostate cancer and benign prostate hyperplasia and correlation with vessel maturity
... unpaired electrons of iron) leads to susceptibility gradients that decrease signal intensity in T2*-weighted MR images. Any increase in hemoglobin oxygen saturation is expected to increase the signal. Our results ...
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Regional dynamic signal changes during controlled hyperventilation assessed with blood oxygen level dependent functional MR imaging
... cerebral oxygen con- sumption in healthy persons ...with oxygen 15 by several research groups (7, ...in blood oxygen level– dependent (BOLD) contrast functional MR im- ...MR ...
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Neurophysiology of the BOLD fMRI Signal in Awake Monkeys
... and blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging (fMRI) in primary visual cortex of anesthetized monkeys demonstrated varying degrees of cor- relation ...
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Modulation of renal oxygenation and perfusion in rat kidney monitored by quantitative diffusion and blood oxygen level dependent magnetic resonance imaging on a clinical 1.5T platform.
... longitudinal imaging methods that in- corporate repeatability measurements can reduce the number of animals by using each as its own control, har- nessing statistical power through the use of paired statis- tical ...
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Diffusion weighted imaging and blood oxygen level dependent MR imaging of kidneys in patients with lupus nephritis
... disturbance and hypoxia within kidneys. Chronic hyp- oxic injury may further induce glomerular sclerosis, interstitial fibrosis and tubular atrophy, which result in lower metabolism and reduction of oxygen ...
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Application of mean-shift clustering to Blood oxygen level dependent functional MRI activation detection
... Using the proposed CCA + MSC technique, true positive rates were plotted to examine the behavior of the tech- nique at various kernel sizes. The statistical threshold was applied at Z = 3. The kernel sizes used were in ...
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