functional MRI


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functional MRI

functional MRI

Fast MRI Imaging A brain imaging technique that measures ↑ blood flow–BF which, like PET, relies on changes in BF and oxygenation due to brain activity; aerobic metabolism in some neurons creates a local ↑ in deoxyHb, which triggers ↑ BF, maintaining O2 in the immediate vicinity, followed by regional ↑ in BF Neuroscience MRI fitted with special hardware to accelerate imaging speeds and advanced software that turns the static images into movies; FM allows real-time evaluation of cerebral activity as the mind thinks, listens, dreams, and imagines. See MRI &uarr. ;.
References in periodicals archive ?
They had a baseline MRI, drank 75 g of glucose, and had a functional MRI scan.
Functional MRI (INIRI) is the technique of using the MRI to observe brain function based on imaging blood flow and oxygen metabolism in the brain.
“We now have a brain scan called the MentScan which uses functional MRI to determine when brain changes first begin- what is termed PreClinical Alzheimer's - before there is any evidence of memory loss or mental impairment.
He applies this approach to all aspects of human behavior, from sensory encoding to moral judgment, using various research tools including genetics, psychophysics, peripheral psychophysiology, and functional MRI.
All modern commercial MRI systems offer functional MRI sequences and data processing packages.
Based on functional MRI and perfusion data, we found support for a model by which life stress interacts with the effect of serotonin transporter genotype on amygdala and hippocampal resting activation, two regions involved in depression and stress.
State space modeling approaches such as the Wiener-Kalman-Akaike are increasingly being applied in analyses of data from neuroscience technologies that measure the living brain (e.g., EEG, functional MRI).
Asiskal noted that on functional MRI, dysthymic patients show significantly more right amygdala, right thalamic, right fusiform gyrus, and left cerebellar activity, compared with controls.
Functional MRI (fMRI) measures signal changes in the brain that occur while the person performs some action; patients have been examined while performing certain tasks or calculations while inside the scanner.
In the study, researchers compared the performance of 40 teenage binge drinkers and 55 non-drinking teenagers in neuropsychological testing, substance use interviews, and tested brain activity by using brain scans through a functional MRI.
Tractography technique shows white matter tracts in the brain and spine and helps to detect their abnormalities, while in Epilepsy patient's evaluation with holistic approach is possible at this center with combination of high resolution images, functional MRI and spectroscopy.
This paper aims to present an overview of two advanced neuroimaging methods: functional MRI (fMRI) and diffusion tensor imaging (DTI).

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