Results 241 to 250 of about 310,808 (292)
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Magnetic resonance: perfusion and diffusion imaging
Neuroradiology, 1990The use of magnetic resonance imaging to detect normal and pathological problems of perfusion and diffusion is reviewed. Motion sensitised spin-echo images can be used to detect changes in slow flow velocity within a voxel (intravoxel coherent motion (IVCM)) as well as intravoxel incoherent motion (IVIM) effects attributable to both diffusion and ...
M, Doran, G M, Bydder
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Diffusion-Weighted Magnetic Resonance Imaging
1997Contrast in magnetic resonance imaging (MRI) is generated by exploiting a variety of physicochemical properties. Conventional clinical MRI techniques are largely based upon disease-induced changes in water relaxation, but these have been complemented by a number of other approaches, including a sensitization to the diffusion of water. It has been shown
King, M. +3 more
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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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Phenylketonuria: Diffusion Magnetic Resonance Imaging and Proton Magnetic Resonance Spectroscopy
Journal of Computer Assisted Tomography, 2003Two patients with phenylketonuria are reported with white matter lesions. Diffusion magnetic resonance (MR) imaging revealed restricted diffusion patterns (high signal) on b = 1000 s/mm2 images associated with low apparent diffusion coefficient values ranging between 0.44 x 10-3 mm2/s and 0.56 x 10-3 mm2/s.
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Canavan Disease: Diffusion Magnetic Resonance Imaging Findings
Journal of Computer Assisted Tomography, 2003A 15-month-old boy with Canavan disease is reported in whom a restricted diffusion pattern on diffusion magnetic resonance imaging (MRI) (high signal on b = 1,000 mm2/s images and low apparent diffusion coefficient [ADC] values) was evident in the affected regions of the brain, including the peripheral white matter, globi pallidi, thalami, brainstem ...
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Pelvic Applications of Diffusion Magnetic Resonance Images
Magnetic Resonance Imaging Clinics of North America, 2011Diffusion-weighted imaging (DWI) is a powerful imaging technique in neuroimaging; its value in abdominal and pelvic imaging has only recently been appreciated as a result of improvements in magnetic resonance imaging technology. There is growing interest in the use of DWI for evaluating pathology in the pelvis. Its ability to noninvasively characterize
Antonio C, Coutinho +4 more
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Magnetization Transfer and Diffusion Tensor Magnetic Resonance Imaging
2002Patients with primary progressive (PP) multiple sclerosis (MS) represent a subgroup with clinical and magnetic resonance (MR) imaging (MRI) characteristics which differ from those of patients with relapsing-remitting (RR) MS or secondary progressive (SP) MS [1,2]. Although they experience a progressive disease course from onset, the burden and activity
Rovaris M +2 more
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[Diffusion magnetic resonance imaging of thorax].
Tuberkuloz ve toraks, 2014Although magnetic resonance imaging (MRI) of Thorax is only useful for morphological evaluation, currently we can use it for functional evaluation such as diffusion weighted imaging. Currently, we can obtain higher quality images because of new technologies such as software that decrease motion artefact, use of multi-channel, parallel imaging and fast ...
ALPER, Fatih +4 more
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Diffusion Magnetic Resonance Imaging in Multiple Sclerosis
Neuroimaging Clinics of North America, 2011Multiple sclerosis (MS) is considered the most common inflammatory autoimmune neurologic disorder and the most frequent cause of nontraumatic neurologic disability in young and middle-age adults. This article reviews the basic features of its magnetic resonance (MR) imaging lesions and, primarily, the use of diffusion MR imaging, which is increasingly ...
da Cruz, L.C.H. +3 more
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Diffusion weighted magnetic resonance imaging in stroke
European Journal of Radiology, 2003Diffusion weighted magnetic resonance imaging has evolved from an esoteric laboratory experiment to a critical aspect of routine clinical care of the patient presenting with symptoms suspicious of acute ischemic stroke. The purpose of this article is to review the basis of diffusion weighted imaging (DWI), to consider its application in acute stroke ...
Timothy P L, Roberts, Howard A, Rowley
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