blood oxygen level-dependent
Application of mean-shift clustering to Blood oxygen level dependent functional MRI activation detection
... Blood Oxygen Level Dependent (BOLD) fMRI data were acquired on a Siemens 3 T Trio scanner (Siemens Medical Solutions, Erlangen, Germany). A gradient echo EPI pulse sequence was used with the ...
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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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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 connectivity has ...
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Breath Hold Blood Oxygen Level–Dependent MRI: A Tool for the Assessment of Cerebrovascular Reserve in Children with Moyamoya Disease
... disease. Blood oxygen level– dependent MR imaging assessment of cerebrovascular reactivity, using voluntary breath-hold hypercapnic challenge, is one such simple ...
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Diffusion weighted imaging and blood oxygen level dependent MR imaging of kidneys in patients with lupus nephritis
... BOLD: Blood oxygen level-dependent; MR: Magnetic resonance; SE-EPI: Spin echo-echo planar imaging; mGRE: Multiple gradient-recalled-echo; TR: Repetition time; TE: Echo time; ADC: Apparent ...
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Abnormal Blood Oxygen Level–Dependent Fluctuations in Focal Cortical Dysplasia and the Perilesional Zone: Initial Findings
... CONCLUSIONS: Abnormalities in spontaneous blood oxygen level– dependent fluctuations were seen up to 2 cm distant from the radiologically visible boundary. It was demonstrated that functional ...
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Blood oxygen level dependent magnetic resonance imaging for detecting pathological patterns in lupus nephritis patients: a preliminary study using a decision tree model
... The Blood oxygen level dependent magnetic resonance imaging (BOLD-MRI) was used to obtain functional magnetic resonance parameter, R2* ...
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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- ...
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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
... of blood oxygen level– dependent MR imaging data identified regions with compromised hemodynamics as defined by DSC, though performance deteriorated in patients with bilateral ...
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Multivariate Classification of Blood Oxygen Level–Dependent fMRI Data with Diagnostic Intention: A Clinical Perspective
... Approximately 70 studies at the proof-of-principle level that use MVPA of fMRI data with a diagnostic intention have been re- ported. However, there is wide range of different methodologic decisions, from ...
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The Influence of Gliomas and Nonglial Space occupying Lesions on Blood oxygen level–dependent Contrast Enhancement
... Holodny et al (36) proposed that the reduction of BOLD contrast enhancement near a glioma could be attributed to a loss of autoregulation of the tumor vasculature. This probably accounts for the area directly adjacent to ...
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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.
... Hydralazine induced significant changes in all the dif- fusion parameters (p < 0.05) for all regions, except the medulla vascular fraction (f ) among the fitted IVIM diffusion parameters (Table 2). Ladder plots of me- ...
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Systemic Theophylline Augments the Blood Oxygen Level—Dependent Response to Forepaw Stimulation in Rats
... anesthetized with subcutaneous injections of 2% mepivacaine hydrochloride (Astra USA, Westborough, MA). Then, a fem- oral artery and vein were catheterized by using 24- and 22- gauge catheters, respectively ...
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Altered blood oxygen level-dependent signal variability in chronic post-traumatic stress disorder during symptom provocation
... Contrast images were then entered into a random-effect two-sample t-test to determine the group difference, with age and education level included as covariates. Subsequently, multiple regression analysis was ...
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Resting State Seed Based Analysis: An Alternative to Task Based Language fMRI and Its Laterality Index
... During the acquisition of language fMRI, the subject is in- structed to perform particular tasks designed to elicit a response from language functional areas. However, not all subjects, such as those with low ...
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Resting State Functional MRI: Everything That Nonexperts Have Always Wanted to Know
... ABBREVIATIONS: ALFF ⫽ Amplitude of Low Frequency Fluctuations; BOLD ⫽ blood oxygen level– dependent; FCD ⫽ functional connectivity density; ICA ⫽ independent component analysis; ReHo ⫽ r[r] ...
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Multiparametric functional magnetic resonance imaging for evaluation of hepatic warm ischemia-reperfusion injury in a rabbit model
... 22]. Blood oxygen level – dependent (BOLD) MRI is a MRI technique that using deoxyhemoglobin as an endogen- ous contrast to reflect alterations in blood oxygenation, blood flow, ...
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Anatomic Location of Tumor Predicts the Accuracy of Motor Function Localization in Diffuse Lower Grade Gliomas Involving the Hand Knob Area
... CONCLUSIONS: This study suggests that the shortest distance from the tumor to the hand knob and the deviation distance for the midpoint of the hand knob on the lesion hemisphere are predictive of the accuracy of ...
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Identifying Significant Changes in Cerebrovascular Reactivity to Carbon Dioxide
... MATERIALS AND METHODS: Cerebrovascular reactivity was the ratio of the blood oxygen level– dependent MR imaging response divided by the change in carbon dioxide stimulus. Two standardized ...
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Cerebrovascular Reactivity Mapping: An Evolving Standard for Clinical Functional Imaging
... SUMMARY: This review article explains the methodology of breath-hold cerebrovascular reactivity mapping, both in terms of acquisition and analysis, and reviews applications of this method to presurgical mapping, ...
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