MR diffusion imaging in stroke: review and controversies.

Beauchamp, Norman J.; Ulug, Aziz M.; Passe, Theodore J.; Zijl, Peter C. van

doi:10.1148/radiographics.18.5.9747619

Cited by 100 publications

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“…The experimentally measurable diffusion coefficient in tissue is therefore referred to as the apparent diffusion coefficient (ADC). 13 In white matter, diffusion is more restricted perpendicularly than parallel to the axonal fibres, causing diffusion to be orientation dependent. This anisotropy can be quantified by the fractional anisotropy index (FA).…”

Section: Introductionmentioning

confidence: 99%

Corticospinal tract degeneration and possible pathogenesis in ALS evaluated by MR diffusion tensor imaging

Karlsborg

Rosenbaum

Wiegell

et al. 2004

Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders

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Section: Introductionmentioning

confidence: 99%

Corticospinal tract degeneration and possible pathogenesis in ALS evaluated by MR diffusion tensor imaging

Karlsborg

Rosenbaum

Wiegell

et al. 2004

Amyotrophic Lateral Sclerosis and Other Motor Neuron Disorders

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“…The isolated radiological finding of high signal intensity lesions in DW-Mri without the presence of any clinical symptoms is categorized as silent strokes. Often high signal intensity lesions in DW-Mri are therefore used as a surrogate parameter for post-angiographic acute ischemic infarct [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Acetylsalicylic Acid Does Not Prevent Digital Subtraction Angiography-Related High Signal Intensity Lesions in Diffusion-Weighted Imaging in Cerebrovascular Patients

et al. 2011

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The use of oral antiplatelet therapy by ASA (100 mg/day) in cerebrovascular patients did not prevent DSA-related high signal intensity lesions in DW-MRI in this study. Despite a potential bias of this retrospective analysis the findings challenge the current theory of thromboembolisms being the predominant origin of silent stroke. The findings therefore support alternative hypotheseses of the etiology of silent strokes, such as air embolism and mobilized embolic material by the catheter at the vessel wall.

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“…The signal detection is based in protons dephased and rephased after the application of the magnetic gradients 8 . Only stationary protons will rephased completely, so when a pathology causes restriction of the diffusion or reduces the translational movement, the decreased ADC in the lesion will be represented by a bright area in DWI in comparison to the unaffected tissue 9 .…”

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confidence: 99%

“…The most important clinical applications of the DWI is the evaluation of acute cerebral ischemia 9 , but new uses have been studied like in the differential diagnosis between intracerebral necrotic tumors and abscesses 10,11 , arachnoid cysts and epidermoid tumors 12 and the evaluation of brain neoplasias 13,14 . The DWI also seems to provide complementary information in traumatic brain injury, demyelination disease and Creutzfeldt-Jakob disease 15 .…”

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confidence: 99%

Diffusion-weighted MR imaging of cystic lesions of neurocysticercosis: a preliminary study

Raffin

Bacheschi

Machado

et al. 2001

Arq. Neuro-Psiquiatr.

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-Neurocysticercosis is an endemic disease in some developing countries. It has pleomorfic clinical and imaging findings, which are variable from patient to patient. In this preliminary note, we studied the magnetic resonance (MR) diffusion-weighted images (DWI) of sixteen patients presenting with cystic lesions of this disease diagnosed by clinical and laboratorial findings. All the lesions had hypointense signal and the similar apparent diffusion coeficient (ADC) values as the cerebrospinal fluid (CSF).KEY WORDS: neurocysticercosis, cystic lesion, MRI, diffusion images. Imagens por difusão de ressonância magnética em lesões císticas da neurocisticercose: estudo preliminarRESUMO -Neurocisticercose é doença endêmica em alguns países em desenvolvimento. Ela apresenta aspectos clínicos e de imagem que variam em cada paciente. Nesta nota preliminar expomos um estudo utilizando imagens ponderadas em difusão em dezesseis pacientes que apresentavam lesões císticas da neurocisticercose comprovada clínica e laboratorialmente. Todas as lesões examinadas apresentaram hiposinal com intensidade de sinal e valores de coeficiente de difusão aparente (CDA) similares ao do líquido cefalorraquiano.PALAVRAS-CHAVE: neurocisticercose, cistos intracranianos, ressonância magnética, imagem por difusão.

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MR diffusion imaging in stroke: review and controversies.

Cited by 100 publications

References 0 publications

Corticospinal tract degeneration and possible pathogenesis in ALS evaluated by MR diffusion tensor imaging

Corticospinal tract degeneration and possible pathogenesis in ALS evaluated by MR diffusion tensor imaging

Acetylsalicylic Acid Does Not Prevent Digital Subtraction Angiography-Related High Signal Intensity Lesions in Diffusion-Weighted Imaging in Cerebrovascular Patients

Diffusion-weighted MR imaging of cystic lesions of neurocysticercosis: a preliminary study

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