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Diffusion Magnetic Resonance Imaging of Infants
Magnetic Resonance Imaging Clinics of North America, 2021Diffusion magnetic resonance imaging (MRI) offers a wealth of information regarding the neonatal brain. Diffusion anisotropy values reflect changes in the microstructure that accompany early maturation of white and gray matter. In term neonates with neonatal encephalopathy, diffusion imaging provides a useful means of assessing brain injury during the ...
Jeffrey J, Neil, Christopher D, Smyser
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Diffusion Tensor Magnetic Resonance Imaging
Journal of Neuro-Ophthalmology, 2006Molecular diffusion plays an important role in many biologic phenomena. The ability to study diffusion, therefore, is extremely useful in physiology and medicine. MRI offers a non-invasive window to diffusion, particularly water self-diffusion. MRI techniques, which provide diffusion sensitivity or quantitation (diffusion tensor MRI [DTI]), have found ...
Vikas, Gulani, Pia C, Sundgren
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Diffusion of magnetic resonance imaging in Iran
International Journal of Technology Assessment in Health Care, 2007Objectives:The aim of this article is to describe the diffusion of magnetic resonance imaging (MRI) in Iran, including regional variations during the period of 1990 to 2005 and international comparisons.Methods:Data on the diffusion of MRI were obtained from the Medical Equipment Office of the Ministry of Health (MOH) and, using self-administered ...
Mohammad, Palesh +4 more
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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
Journal of Neuro-Ophthalmology, 2002Diffusion-weighted magnetic resonance imaging is a specialized technique that measures the degree of diffusion of water molecules within extracellular space and between intracellular and extracellular space. Diffusion-weighted imaging signal is high (bright) when diffusion is restricted, as occurs in cytotoxic damage from ischemia, inflammation, trauma,
Suresh K, Mukherji +2 more
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Diffusion Magnetic Resonance Imaging of the Breast
Magnetic Resonance Imaging Clinics of North America, 2011Several studies have investigated the role of advanced magnetic resonance imaging (MRI) techniques, such as diffusion-weighted imaging (DWI), to improve the specificity of MRI for the evaluation of breast lesions. Potential roles for DWI and the apparent diffusion coefficient in characterizing breast tumors and distinguishing malignant from benign ...
Fernanda Philadelpho Arantes, Pereira +2 more
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Magnetic resonance imaging of diffusion and perfusion
Topics in Magnetic Resonance Imaging, 1991Two promising advances in MRI have recently evolved. Water proton directional "diffusion" as well as "perfusion" processes can be imaged in a rapid (on the order of milliseconds) and accurate manner. MR diffusion imaging is shown to effectively allow determination of the presence of anisotropic water diffusion in animal and human cerebral and spinal ...
M E, Moseley +2 more
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Measurement of thermal diffusivity by magnetic resonance imaging
Magnetic Resonance Imaging, 2006Nuclear magnetic resonance (NMR) may be used for monitoring temperature changes within samples based on measurements of relaxation times, the diffusion coefficient of liquids, proton resonance frequency or phase shifts. Such methods may be extended to the explicit measurement of the thermal diffusivity of materials by NMR imaging.
David H, Gultekin, John C, Gore
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Diffusion Magnetic Resonance Imaging in the Head and Neck
Magnetic Resonance Imaging Clinics of North America, 2011Diffusion weighting (DW) represents a magnetic resonance imaging contrast distinct from T1 and T2 in terms of imaging physics and its relationship to underlying physiology and pathophysiology. DW imaging has become a sine qua non of neuroimaging because of its exquisite sensitivity to the molecular motion of water that is altered in many pathologic ...
James, Schafer +2 more
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