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Showing 1 to 12 of 12 for “"QSM"”.
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Magnetic Resonance Imaging of Susceptibility Effects in Carotid Atherosclerosis
… (SWI) and quantitative susceptibility mapping (QSM), to characterize carotid artery plaques with and without the use of ultrasmall superparamagnetic iron oxide (USPIO) nanoparticle contrast agents. The overall hypothesis is that QSM can serve to differentiate carotid artery plaque features of …
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UPPER MOTOR NEURON BURDEN IN AMYOTROPHIC LATERAL SCLEROSIS: CLINICAL AND IMAGING FEATURES, AND THE ROLE OF IRON METABOLISM
… di mappatura di suscettibilità magnetica (QSM) sembra essere un valido strumento per misurare l’accumulo di ferro cerebrale con la RMN. A livello ematico, invece, la ferritina e la transferrina sierica sono noti biomarcatori del metabolismo del ferro nella SLA; mentre l’enzima Glutatione …
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Investigation of a quorum sensing peptide in bacillus licheniformis and its novel antifungal property
Quorum sensing molecules (QSMs) are involved in the regulation of complicated processes helping bacterial population benefit from their cell-density. This phenomenon has been recently studied in some fungal populations. Prokaryotes and Eukaryotes’ co-evolution raises the prospect of the existence …
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Strategies for Improving the Bacterial Biodegradation of PET
… the impact of the quorum sensing molecule (QSM) (specifically, 3-oxo-C12-HSL) on PET degradation was investigated in the context of DTAB-treated, FSC-treated, and DTAB-FSC-treated PET up to eight weeks in the presence of the mentioned bacteria with particular emphasis on I. sakaiensis for …
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Identification of Intracranial Lesions With Dual-Energy Computed to mography and Magnetic Resonance Phase Imaging
… such as Quantitative Susceptibility Mapping (QSM), the phase can be used to calculate the magnetic susceptibility of a lesion. Since calcifications are diamagnetic and hemorrhage paramagnetic, we can make inferences about a lesion’s composition from these algorithms.</p> <p>The objective of …
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MR Susceptibility Mapping: Improved Quantification and Applications in Developmental Brain Imaging
… using quantitative susceptibility mapping (QSM) have shown its unique sensitivity to myelin. However, due to the cylindrical structure of myelin sheaths wrapping around axons, the magnetic susceptibility measured by QSM of the white matter has been found to be dependent on the angular …
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Reconstruction algorithms for MRI
… (CSI), and Quantitative Susceptibility Mapping (QSM). The main theme connecting the proposed methods is the utilization of prior knowledge on the reconstructed signal. This prior often presents itself in the form of sparsity with respect to either a prespecified or learned signal transformation.
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Further development of magnetic resonance spectroscopic imaging using subspace-based models
… image for quantitative susceptibility mapping (QSM). The proposed method has been evaluated in in vivo experiments and shown capable of providing state-of-the-art MRSI and QSM of the brain at millimeter-scale resolutions from a 7 min scan. We have also developed two novel methods to improve the …
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Intrinsic Quantum Thermodynamics: Application to Hydrogen Storage on a Carbon Nanotube and Theoretical Consideration of Non-Work Interactions
… theory of Quantum Statistical Mechanics (QSM) and the more recent development of Quantum Thermodynamics (QT). IQT is then used to model in 3D the time evolution of the adsorption of hydrogen on a single-walled carbon nanotube. The initial state of the hydrogen molecules is far from stable …
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Measuring Brain Iron In Healthy Controls And Accessing Venous Abnormalities In Parkinson's Disease Using Mri
… deposition. Quantitative susceptibility mapping (QSM) is another approch we used to study normal brain iron deposition as a further step since susceptibility is a tissue property that is free from geometry effect and imaging parameters. Except in the thalamus, iron increases over time in the gray …
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Quorum sensing for improved production of industrially useful products from filamentous fungi
… molecules, known as quorum sensing molecules (QSM) in the extracellular milieu. When the concentrations of the QSMs reach a critical threshold corresponding to a particular cell density, they bind to a receptor enabling them to function as transcriptional regulators. QS is widely studied in …
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In-vitro Nachweis von intramammären Makroverkalkungen mittels suszeptibilitätsgewichteter Magnetresonanztomographie und quantitativer Suszeptibilitätskartierung bei 1,5 Tesla
Im Rahmen dieser Arbeit wurde eine 3D-SW-Multi-GRE-Pulssequenz entwickelt, die den klinischen Anforderungen für die Magnetresonanztomographie-Bildgebung von intramammären Verkalkungen bei 1,5 Tesla unter Verwendung einer 16-Kanal-Brustspule entspricht. Für diesen Zweck wurden verschiedene Modelle …