Results 221 to 230 of about 154,845 (263)
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2003
Although conventional T2-weighted magnetic resonance imaging (MRI) is sensitive for the detection of multiple sclerosis (MS) lesions, it is not without important limitations. First, MRI lacks specificity with regard to the heterogeneous pathological substrates of individual lesions, and in consequence does not allow tissue damage to be quantified ...
FILIPPI , MASSIMO, Rocca MA
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Although conventional T2-weighted magnetic resonance imaging (MRI) is sensitive for the detection of multiple sclerosis (MS) lesions, it is not without important limitations. First, MRI lacks specificity with regard to the heterogeneous pathological substrates of individual lesions, and in consequence does not allow tissue damage to be quantified ...
FILIPPI , MASSIMO, Rocca MA
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2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
This paper presents a magnetic resonance imaging method that can provide high-resolution images characterizing water diffusion in biological tissues. These images contain information about tissue microstructure, thereby providing a useful means to monitor physiological changes.
Justin P, Haldar, Zhi-Pei, Liang
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This paper presents a magnetic resonance imaging method that can provide high-resolution images characterizing water diffusion in biological tissues. These images contain information about tissue microstructure, thereby providing a useful means to monitor physiological changes.
Justin P, Haldar, Zhi-Pei, Liang
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Diffusion-MRI in neurodegenerative disorders
Magnetic Resonance Imaging, 2015The ability to image the whole brain through ever more subtle and specific methods/contrasts has come to play a key role in understanding the basis of brain abnormalities in several diseases. In magnetic resonance imaging (MRI), "diffusion" (i.e. the random, thermally-induced displacements of water molecules over time) represents an extraordinarily ...
Joseph Goveas a +13 more
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MRI and Diffusion MRI in nonparaneoplastic limbic encephalitis
Computerized Medical Imaging and Graphics, 2002This paper reports an 65-year-old woman with nonparaneoplastic limbic encephalitis. On MRI and diffusion MRI, diffuse and symmetrical, bilateral high-signal lesions were evident in the medial temporal lobes. The affected areas were hyperintense on b= 1000 s/mm(2) (heavily diffusion-weighted or true diffusion) images, a pattern similar to cytotoxic ...
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Fundamentals of diffusion MRI physics
NMR in Biomedicine, 2017Diffusion MRI is commonly considered the “engine” for probing the cellular structure of living biological tissues. The difficulty of this task is threefold. First, in structurally heterogeneous media, diffusion is related to structure in quite a complicated way.
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European Journal of Radiology Extra, 2003
Abstract Acute disseminated encephalomyelitis (ADEM) usually reveals patchy demyelinated lesions with high signal on T2-weighted sequences. Diffusion MRI in a 10-year-old patient with ADEM demonstrated two distinct lesion patterns occurring simultaneously in the cerebral white matter. These were a restricted diffusion pattern (high-signal on b =1000
Sener R.N. +3 more
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Abstract Acute disseminated encephalomyelitis (ADEM) usually reveals patchy demyelinated lesions with high signal on T2-weighted sequences. Diffusion MRI in a 10-year-old patient with ADEM demonstrated two distinct lesion patterns occurring simultaneously in the cerebral white matter. These were a restricted diffusion pattern (high-signal on b =1000
Sener R.N. +3 more
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Diffusion MRI Outside the Brain
2019This manuscript provides an overview of recent developments in Diffusion-Weighted Imaging (DWI) outside the brain, focusing on liver, breast, prostate, muskuloskeletal (MSK) and cardiac applications. A general introduction to cross-cutting acquisition and image processing challenges is first provided. These often include short \(T_2\) relaxation times,
Rita G. Nunes +4 more
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Combining Functional and Diffusion Tensor MRI
Annals of the New York Academy of Sciences, 2005Functional magnetic resonance imaging (fMRI) of the perceptual, motor, and cognitive capacities in humans is of increasing importance for basic and clinical neurosciences. The explanatory power of current fMRI techniques could be greatly expanded, however, if the pattern of the neuronal connections between the active cortical areas
Kim, DS Kim, Dae-Shik, Kim, M
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Diffusion‐weighted MRI of fatty liver
Journal of Magnetic Resonance Imaging, 2011AbstractPurpose:To investigate the effect of fat infiltration on the apparent diffusion coefficient (ADC) of liver, and assess the relationship between ADC and hepatic fat fraction (HFF).Materials and Methods:MRI scans of 120 consecutive patients were included in this retrospective study. Of these, 42 patients were included in the fatty liver group and
POYRAZ, AHMET KÜRŞAD +3 more
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Theory and applications of diffusion MRI
2010 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2010Boosted by the tremendous success of diffusion tensor MRI, which led to the first in vivo and non-invasive characterization of microstructural tissue properties, many advancements in diffusion MRI have been made during the last decade. With new methodological developments in data acquisition, modeling, pre-processing, analysis, and visualization ...
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