Results 221 to 230 of about 388,478 (263)

Functional Magnetic Resonance Imaging of the Lung

Seminars in Respiratory and Critical Care Medicine, 2014
Beyond being a substitute for X-ray, computed tomography, and scintigraphy, magnetic resonance imaging (MRI) inherently combines morphologic and functional information more than any other technology. Lung perfusion: The most established method is first-pass contrast-enhanced imaging with bolus injection of gadolinium chelates and time-resolved gradient-
J, Biederer, C P, Heussel, M, Puderbach, M O, Wielpuetz   +3 more
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Use of Functional Magnetic Resonance Imaging

Neurosurgery Clinics of North America, 1996
It has been the goal of this article to provide the reader with a brief background of fMRI, a basic understanding of the techniques of fMRI, and, more importantly, the potential for clinical and experimental studies using fMRI. In contrast to the limited number of installed PET and MEG units, the large installed base of MR imaging scanners (over 1000 ...
C C, Lee, C R, Jack, S J, Riederer
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Functional magnetic resonance imaging: functional mapping

2012
Abstract Blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) is used primarily to identify the location of eloquent brain functions to spare during epilepsy surgery. Motor tapping yields robust identification of the primary motor cortex, and visual checkerboard stimuli identify primary visual cortex.
William D, Gaillard, Madison M, Berl
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Clinical Functional Magnetic Resonance Imaging

Cognitive and Behavioral Neurology, 2007
To describe a new series of evaluation/procedural codes that were approved by the American Medical Association (AMA) CPT Editorial Panel for use in billing for these procedures by physicians or licensed clinical psychologists.As of January of 2007, 3 distinct CPT codes for billing related to the functional magnetic resonance imaging (fMRI) procedure ...
John, Hart, Stephen M, Rao, Marc, Nuwer
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Magnetic resonance imaging of brain function

Annals of Neurology, 1994
New techniques for imaging of brain function are described, which utilize magnetic resonance imaging. Echo-planar imaging (EPI), the preferred method, is introduced and technical issues are discussed. Two recent approaches for measurement of blood flow are explained: contrast agent bolus tracking and black blood perfusion.
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Functional magnetic resonance imaging in children

Seminars in Pediatric Neurology, 1999
Functional magnetic resonance imaging (fMRI) allows for the noninvasive mapping of the anatomical location of disparate functional brain activities. The means for carrying out fMRI involves the use of existing MR technology coupled with a special software image acquisition program or the use of a specially designed head coil.
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Functional Diffusion Magnetic Resonance Imaging

2018
Functional diffusion magnetic resonance imaging (fDMRI) is a noninvasive technique that allows elucidating physiological and anatomical changes at a microscopic scale by detection of water molecular displacements in tissue structures. These displacements likely reflect microstructural changes associated with neuronal or glial cells activation.
Rita Maria Rocha, Oliveira, Irene, Guadilla, Pilar, López-Larrubia   +2 more
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The analysis of functional magnetic resonance images

Statistical Methods in Medical Research, 1997
Functional magnetic resonance imaging (fMRI) is a powerful technique for measuring brain activity associated with the performance of different mental tasks. We briefly describe this technique and the images it produces and review methods of analysis that have been applied to fMRI data.
S, Rabe-Hesketh, E T, Bullmore, M J, Brammer   +2 more
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AUDITORY SYSTEM: Functional Magnetic Resonance Imaging

Neuroimaging Clinics of North America, 2001
Functional MR imaging (fMRI) is being used increasingly to explore the human central auditory system. The considerable background noise produced by echo-planar imaging (EPI) and other fMRI sequences, however, interferes in an unpredictable way with the experimental stimuli. Several approaches exist to overcome this problem.
E. Seifritz, DI SALLE, Francesco, D. Bilecen, E. W. Radü, K. Scheffler   +4 more
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Constrained ICA for functional magnetic resonance imaging

Proceedings of the 2005 European Conference on Circuit Theory and Design, 2005., 2006
Use of physiologically plausible functional constraints on components obtained by functional magnetic resonance scan decomposition is demonstrated to be instrumental in biasing ICA towards more realistic solutions, and to allow to extract only significant components automatically.
BALSI, Marco, FILOSA G., VALENTE G., PANTANO P.   +3 more
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