Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Partial separability"”.
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Dynamic speech imaging with low-rank approximation
… very sparsely sampled data is achieved using the partial separability (PS) model, which takes advantage of the spatiotemporal correlations of dynamic speech images. The sampling pattern is also optimized to better capture speech dynamics. The spatial-spectral sparsity constraint is further …
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Rank constrained denoising in magnetic resonance imaging
… MRSI data, which are due to the spatiotemporal partial separability in the k-t domain and the linear predictability (LP) along the temporal dimension, respectively. We conduct a comprehensive investigation of how to optimally segment the 1-D temporal single-voxel MRSI signals to improve the …
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A subspace approach to high-resolution magnetic resonance spectroscopic imaging
… the spectroscopic signals in MRSI using the partial separability (PS) model. The PS model implies that the high-dimensional spectroscopic signals reside in a low-dimensional subspace, which enables the design of special sparse sampling strategies for accelerated spatiospectral encoding and …
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Towards high-resolution magnetic resonance spectroscopic imaging: spatiotemporal denoising and echo-time selection
… two low-rank structures of MRSI data, one due to partial separability and the other due to linear predictability of MRSI data. Denoising is performed by arranging the measured data in appropriate matrix forms (i.e., Casorati and Hankel) and applying low-rank approximations by the singular value …
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The phonetic correlates of pharyngealization and pharyngealization spread patterns in Cairene Arabic an acoustic and real-time magnetic resonance imaging study
… acquired rtMRI data is reconstructed using the Partial Separability model to achieve high temporal resolution (approximately 100 fps) and high spatial resolution (128 × 128 voxels (volume elements), with each voxel measuring 2.2 mm × 2.2 mm × 8.0 mm (through-plane depth). Midsagittal MRI frames …
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Simultaneous fMRI and metabolic imaging of the brain using spice
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-12-01
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Accelerated J-resolved proton magnetic resonance spectroscopic imaging
1H-MRSI has long been recognized as a powerful tool for noninvasive mapping of metabolites and neurotransmitters. A fundamental challenge of conventional 1H-MRSI is that resonances from different molecules overlap with one another in the crowded chemical shift frequency spectrum, which will lead to …