Results 311 to 320 of about 802,660 (349)
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Simultaneous magnetic resonance imaging of diffusion anisotropy and diffusion gradient
Magnetic Resonance Imaging, 2008The theory of diffusion gradient-weighted MRI (DGWI) is presented in this paper. The Bloch-Torrey equation was modified to include the effect of intravoxel spatial-location variation of water diffusion (diffusion gradient) on MRI signal, in addition to the effect of intravoxel spatial-direction variation of water diffusion (diffusion anisotropy).
Jie, Huang, David C, Zhu
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Diffusion Tensor Magnetic Resonance Imaging of Brain Tumors
Magnetic Resonance Imaging Clinics of North America, 2005DTI seems to offer the possibility of adding important information to presurgical planning. Although experience is limited, DTI seems to provide useful local information about the structures near the tumor, and this seems to be useful in planning. In the future, DTI may provide an improved way to monitor intraoperative surgical procedures as well as ...
L Celso Hygino, Cruz Júnior +1 more
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Magnetic Resonance Imaging of Diffuse Liver Diseases
Topics in Magnetic Resonance Imaging, 2002The intrinsic soft tissue contrast and exquisite sensitivity to contrast agents are unique attributes of magnetic resonance imaging that are beneficial when evaluating diffuse liver disease. Much like a pathologist uses different tissue or cell marker stains, the magnetic resonance imager can use a variety of imaging strategies to elucidate pathologic ...
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Perfusion/Diffusion Quantitation with Magnetic Resonance Imaging
Investigative Radiology, 1992Quantitation of perfusion and diffusion in tissues using magnetic resonance imaging (MRI) techniques is an active area of research in many laboratories. Several different approaches have been taken to address the problem of determining microcirculatory flow or perfusion in the body with MRI.
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Nonketotic Hyperglycinemia: Diffusion Magnetic Resonance Imaging Findings
Journal of Computer Assisted Tomography, 2003We report about a boy with nonketotic hyperglycinemia who was studied at 15 days of life with a follow-up examination at age 6 months. Magnetic resonance (MR) imaging revealed progressive atrophy, callosal thinning, and delayed myelination. Glycine peaks were shown by proton MR spectroscopy at 3.56 ppm with a long echo time (TE, 135 milliseconds; TR ...
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Diffusion Magnetic Resonance Imaging in Infantile Neuroaxonal Dystrophy
Journal of Computer Assisted Tomography, 2003A 7-month-old girl with infantile neuroaxonal dystrophy is reported. In diffusion MRI, the pyramidal tracts and dentate nuclei had high signal on b = 1,000 s/mm2 images and low apparent diffusion coefficient (ADC) values. This pattern likely reflected the presence of abnormal (dystrophic) axons with restricted mobility of water molecules.
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Three‐dimensional tracking of axonal projections in the brain by magnetic resonance imaging
Annals of Neurology, 1999S. Mori +3 more
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[Diffusion, perfusion and functional magnetic resonance imaging].
Journal des maladies vasculaires, 1995Recent developments in the use of Magnetic Resonance Imaging (MRI) to measure and image molecular diffusion and blood microcirculation (perfusion) hold significant promise in the noninvasive evaluation of normal brain function and functional disorders. Molecular diffusion is the result of spontaneous random motion that involves all molecules and probes
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Developmental Medicine & Child Neurology, 2012
Simon M Scheck, R. Boyd, S. Rose
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Simon M Scheck, R. Boyd, S. Rose
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