Further Comments about the Diffusion Coefficient
Does Normalised Apparent Diffusion Coefficient Further Improve the Diagnostic Accuracy of Diffusion-Weighted MRI at 3T in Characterising Breast Masses?
... using the proprietary diffusion analysis software provided by the MR imaging manufacturer (Philips Medical Systems) and the Stejkal and Tanner equation. Qualitative DWI analysis of the 51 breast masses was ...
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Further comments on axioms for geometry
... Further comments on axioms for geometry One important feature of the Elements is that it develops geometry from a very short list of ...postulates about these ...
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Vertical variation in diffusion coefficient within sediments
... The high speed camera used was a Photron Fastcam 1024 PCI, capable of 1000fps at full resolution (1024 by 1024 pixels). The lens used was a Nikon 55mm f/2.8 Micro-Nikkor, focused manually. After some experimentation with ...
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The utility of diffusion weighted MRI and apparent diffusion coefficient in characterization of breast masses
... . Diffusion- Weighted MRI (DW-MRI) is an active field of research in ...to diffusion-weighted imaging (DWI), apparent diffusion coefficient (ADC) maps can be created and quantitative measurements can ...
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Determination of the gas diffusion coefficient of a peat grassland soil
... shrinkage. Further research into the importance of soil type as a control of gas movement through the profile of peatland soils, conducted at a greater range of air- filled porosities, would be useful to ...
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Evaluation of Cervical Myelopathy Using Apparent Diffusion Coefficient Measured by Diffusion Weighted Imaging
... information about spinal cord compression, and more than half of patients with CSM show intramedullary high signal intensity on T2-weighted imag- ing, 1 mainly in the spinal gray matter, but the exact mecha- nism ...
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The Efficacy of Diffusion Weighted Imaging and Apparent Diffusion Coefficient Mapping for Meniscal Tears in the Knee
... MR imaging (MRI) is a reliable method of evaluating the meniscal tears and injuries. MRI provides important datas about bone and soft tissue disorders in and around the knee joint. This imaging method is also ...
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Further comments on research militancy. Footnotes on procedures and (in)decisions
... what about (the topic might change), as long as in this ‘journey’ we all experiment substantial changes, that is, that we emerge with new capacities to empower (potenciar) ...
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Evolution of Apparent Diffusion Coefficient, Diffusion weighted, and T2 weighted Signal Intensity of Acute Stroke
... help further clarify the time course of stroke evolution, which may have important implications for establishing ratio- nal time windows for acute stroke ...
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Evaluation of the efficacy of chemoradiotherapy in cervical cancer using diffusion-weighted imaging and apparent diffusion coefficient
... a predictor for smaller tumor size, 6 which is consistent with the result of this study. In this study, ADC values at different time points before and after CRT treatment were different. The increased rate of ADC values ...
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Bias in MRI Measurements of Apparent Diffusion Coefficient and Kurtosis: Implications for Choice of Maximum Diffusion Encoding
... to limit measurement error in the compartment with the larger value of DK will automatically also limit measurement error in the other compartment. A similar approach can be taken with non-Gaussian measurements, with the ...
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On the numerical solution of Fisher’s equation with coefficient of diffusion term much smaller than coefficient of reaction term
... We tabulate the L 1 and L ∞ errors and CPU time when Problems 1 and 2 are solved using the NSFD scheme at some different values of time-step size k, with spatial step size h = 0.01. The errors are displayed in Tables 6 ...
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Correlation of Apparent Diffusion Coefficient at 3T with Prognostic Parameters of Retinoblastoma
... applied diffusion-weighted MR imaging but did not perform diffusion tensor ...imaging. Further studies with application of diffusion tensor MR imaging with multichannel coils will likely ...
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Hyperglycemia and the Fate of Apparent Diffusion Coefficient–Defined Ischemic Penumbra
... were further investigated by the multivariate sub- group analysis that first confirmed that recanalization reduced the transformation of penumbral area into infarction and then showed that HG was deleterious in ...
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Normative Apparent Diffusion Coefficient Values in the Developing Fetal Brain
... Although fetal DWI is limited by fetal motion, our study demonstrates the feasibility of performing DWI in a large group of healthy nonsedated singleton fetuses, including those at younger gestational ages. This is ...
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Effect of Air Content on the Oxygen Diffusion Coefficient of Growing Media
... information about the gas exchange with the surrounding ...oxygen diffusion coefficient fulfills this requirement and may be better suited as a characteristic parameter to describe the oxygen ...gas ...
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The Value of Apparent Diffusion Coefficient Maps in Early Cerebral Ischemia
... the diffusion-weighted ...at about the level that visual assessment of the changes would become difficult to detect, but this supports the hypothesis that color maps of these changes might aid in visual ...
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Diffusion Coefficient Perry
... In this table are a representative selection of diffusion coefficients. The subsection “Prediction and Correlation of Physical Properties” should be consulted for estimation techniques. As general references, the ...
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Characterization of the diffusion coefficient of blood.
... Another limitation is that blood composition differs between different types of blood vessels. Apart from changes in oxygen and carbon dioxide concentrations, hematocrit (43) and erythrocyte volume (44) differ between ...
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A Search for MRI diffusion coefficient standards
... 16 The diffusion gradient must be one-dimensional (1D), linear, and well characterized. D is often determined. A detailed scientific description of the PGSE sequence can be very lengthy without analogies. The race ...
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