نتایج جستجو برای: هسته mre
تعداد نتایج: 12042 فیلتر نتایج به سال:
For the diagnosing modality called MRE (magnetic resonance elastography), the displacement vector of a wave propagating in a human tissue can be measured. The average of the local wavelength from this measured data could be an index for the diagnosing, because the local wave length becomes larger when the tissue is stiffer. By assuming that the local form of the wave is given approximately as m...
OBJECTIVE The aim of this study was to evaluate the sleep breathing patterns and to detect the eventual presence of periodic leg movements (PLMs) in patients affected by Angelman syndrome (AS). METHODS Ten children with AS were recruited to participate in the study; the clinical diagnosis was confirmed by the genetic analysis (maternal 15q deletion, uniparental paternal disomy, or mutation of...
Two classes of algorithms proposed for the blind equalization of multiple channels driven by a single source are the Mutually Referenced Equalizers (MRE) method by Gesbert et al., and the Subspace Intersection (SSI) method by Van der Veen et al. Although these methods seem at first sight unrelated, we show here that a variant of the SSI method and a particular member in the class of MRE methods...
The essence of exploration is acting to try to decrease uncertainty. We propose a new methodology for representing uncertainty in continuous-state control problems. Our approach, multi-resolution exploration (MRE), uses a hierarchical mapping to identify regions of the state space that would benefit from additional samples. We demonstrate MRE’s broad utility by using it to speed up learning in ...
BACKGROUND Crohn's disease (CD) is a lifelong, relapsing and remitting inflammatory condition of the intestine. Medical imaging is crucial for diagnosis, phenotyping, activity assessment and detecting complications. Diverse small bowel imaging tests are available but a standard algorithm for deployment is lacking. Many hospitals employ tests that impart ionising radiation, of particular concern...
Alpha toxin is one of the major virulence factors secreted by Staphylococcus aureus, a bacterium that is responsible for a wide variety of infections in both community and hospital settings. Due to the prevalence of S. aureus related infections and the emergence of methicillin-resistant S. aureus, rapid and accurate diagnosis of S. aureus infections is crucial in benefiting patient health outco...
In general, tissues will deform in three dimensions during MR elastography (MRE). In order to reconstruct elastic modulus by an inverse method, 3 components of displacement must be acquired in order to establish a boundary value problem for numerical solution. Many investigators have assumed twodimensional plane-strain conditions to analyze MRE displacement data, but it has been noted that such...
Introduction: Interstitial lung disease (ILD) induced end-stage fibrosis is a multiphase process that includes: 1) an initial or exposure phase; 2) an exudative phase; and 3) a final stage with one of two outcomes; a) edema clearance associated with alveolar wound healing and recovery, or b) organization of the alveolar space filling material followed by scar formation associated with loss of n...
The noninvasive measurement of the mechanical properties of brain tissue using magnetic resonance elastography (MRE) has emerged as a promising method for investigating neurological disorders. To date, brain MRE investigations have been limited to reporting global mechanical properties, though quantification of the stiffness of specific structures in the white matter architecture may be valuabl...
This paper presents a novel semi-active Variable Stiffness and Damping Isolator (VSDI) for vibration mitigation of structures. The proposed VSDI system consists of a traditional steel-rubber vibration absorber, as the passive fail-safe element, and a magneto-rheological elastomer (MRE) with a controllable (or variable) stiffness and damping behavior, as the passive-active element. MRE is a type...
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