نتایج جستجو برای: fluid attenuation inversion recovery
تعداد نتایج: 500322 فیلتر نتایج به سال:
The present paper offers a numerical model which can be applied for the simulation of wave height distribution on a 2-D horizontal soft mud layer. The model is based on mild slope equations and it includes combined wave refraction, diffraction, reflection and breaking. The high energy dissipation of wave height due to the presence of fluid mud layer has also been simulated. Wave height attenuat...
SUMMARY Seismic inversion of amplitude versus offset (AVO) data in viscoelastic media can potentially provide high-resolution subsurface models seismic velocities and attenuation from offset/angle gathers. P- S-wave quality factors (Q), whose inverse represent a measure attenuation, depend on reservoir rock pore fluid properties, particular, saturation, permeability, porosity, viscosity litholo...
We report a case of a 19-year-old woman who developed intracranial hypertension as an unusual clinical complication of severe aseptic meningoencephalitis probably due to a diminished cerebrospinal fluid reabsorption capacity or leptomeningeal transudation as a consequence of blood-brain barrier dysfunction. These severe inflammatory changes were accompanied by prominent leptomeningeal contrast ...
The patient was a 24-year-old man who presented with a 2-month history of headache, gait disturbance and hearing loss. He had no skin or genital manifestations before these symptoms. T2-weighted magnetic resonance imaging (MRI), fluid-attenuated inversion recovery MRI, contrast-enhanced T1-weighted MRI, and diffusion-weighted MRI revealed a mass with extensive edema and dural enhancement in the...
Figure 1. Magnetic resonance imaging of the brain demonstrating peripheral enhancement of the scalp abscess alongside noticeable enhancement of the adjacent soft tissues, pathological bone, and underlying pachymeningeal layer enhanced on a coronal T1W slice (left) with a clear intra-osseous edematous edema in keeping with osteomyelitic changes isolating a central bone sequestrum, communicating ...
OBJECTIVES To assess whether multiple sclerosis lesion volume measurements derived using the fast fluid attenuated inversion recovery (fFLAIR) sequence show better reproducibility or correlation with disability than those derived using the conventional spin echo (CSE) sequence. METHODS Part I: twenty five patients with multiple sclerosis were scanned with CSE, fast spin echo (FSE), and fFLAIR...
A total of two postpartum women with no noteworthy medical history presented with persistent headache. Brain magnetic resonance imaging (MRI) of both revealed extensive cerebral venous thrombosis, concurrently with abnormal signals of the splenium of the corpus callosum (SCC): The splenium appeared hyperintense on T2-weighted sequences, fluid-attenuated inversion recovery (FLAIR), and diffusion...
Glioblastoma (GBM) show significant inter- and intra-tumoral heterogeneity, impacting response to treatment and overall survival time of 12-15 months. To study glioblastoma phenotypic heterogeneity, multi-parametric magnetic resonance images (MRI) of 85 glioblastoma patients from The Cancer Genome Atlas were analyzed to characterize tumor-derived spatial habitats for their relationship with out...
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