Assessment of Tissue Viability by Apparent Diffusion Coefficient in Acute Human Stroke
نویسندگان
چکیده
منابع مشابه
Is there an apparent diffusion coefficient threshold in predicting tissue viability in hyperacute stroke?
BACKGROUND AND PURPOSE Rapid and precise identification of the penumbra is important for decision-making in acute stroke. We sought to determine whether an early and moderate decrease in the apparent diffusion coefficient (ADC) may help to identify, within the diffusion/perfusion (DWI/PWI) mismatch, those areas that will eventually evolve toward infarction. METHODS We reviewed 48 patients not...
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Figure 2. (a) ADC (unit 1×10 mm/s) changes in the presence and absence of reperfusion; (b)histogram of tp2 ADC in the reperfused ROI that did (infarct) and did not (noninfarct) go on infarction. The two vertical lines show ADC abnormal threshold (left) and normal mean (right). Figure 1. Representative ADC, MTT at tp1 and tp2 and FLAIR at tp3 from two patients. The range of the colorbar is from ...
متن کاملEvolution of apparent diffusion coefficient, diffusion-weighted, and T2-weighted signal intensity of acute stroke.
BACKGROUND AND PURPOSE Serial study of such MR parameters as diffusion-weighted imaging (DWI), apparent diffusion coefficient (ADC), ADC with fluid-attenuated inversion recovery (ADC(FLAIR)), and T2-weighted imaging may provide information on the pathophysiological mechanisms of acute ischemic stroke. Our goals were to establish the natural evolution of MR signal intensity characteristics of ac...
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BACKGROUND AND PURPOSE We sought to describe the frequency of normalization of apparent diffusion coefficient (ADC) values that are decreased in hyperacute stroke and to identify characteristics of tissue demonstrating normalization. METHODS Sixty-eight acute ischemic stroke patients underwent MRI examination (including diffusion/perfusion imaging and MR angiography) within 6 hours (mean, 2.8...
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Introduction: Most common glioma tumors are tumors of the central nervous system (CNS) which are the cause of about 40 to 50 percent of brain tumors. This type of cancer includes 2 to 3 percent of cancers in the world. Conventional MRI is powerless in the detection and differentiation of benign and malignant tumors. In this case, diffusion weighted imaging (DWI) can create cont...
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ژورنال
عنوان ژورنال: Surgery for Cerebral Stroke
سال: 2005
ISSN: 0914-5508,1880-4683
DOI: 10.2335/scs.33.30