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Diffusion-Weighted MR Imaging (DW-MRI) and Diffusion-Weighted MR Spectroscopy (DW-MRS)
Magnetic Resonance Imaging (MRI) is a unique technique that provides tissue-specific contrast non-invasively. However, even at ultra-high field, resolution remains on the millimeter scale, far above cellular microstructure. Taking the fact that diffusion of nuclear spins in magnetic field gradients results in a characteristic signal loss, MRI can be sensitized to water-diffusion (DW-MRI) to recover microstructural information indirectly. Diffusion-Weighted MR Spectroscopy (DW-MRS) goes one step further by not measuring the diffusion of tissue water but of cell-type specific metabolites. Given that, both techniques can provide complementary information: DW-MRI on water diffusion with high spa...
Assessing Cellular Microstructure in Biological Tissues using In Vivo Diffusion-Weighted Magnetic Resonance
Magnetic resonance imaging (MRI) and spectroscopy (MRS) techniques have opened new doors for examining biological tissues in vivo. By combining sensitization to diffusion using magnetic field gradients with a variety of imaging and localization schemes, diffusion-weighted MRI and diffusion-weighted MRS allow investigating translational diffusion of endogenous molecules, such as water or metabolites, in biological tissues, most commonly the brain but also other organs such as the prostate. The typical voxel resolution of MRI or MRS is in the millimeter to centimeter range, much lower than the cellular scale. However, as molecules are typically diffusing over just a few µm during the duration...
Metabolic Analysis Using Stable Isotopes
Metabolic Analysis Using Stable Isotopes, the newest volume in Methods in Enzymology continues the legacy of this premier serial with quality chapters authored by leaders in the field. This volume covers research methods in metabolic analysis using stable isotopes. - Continues the legacy of this premier serial with quality chapters on metabolic analysis using stable isotopes - Represents the newest volume in Methods in Enzymology, providing a premier serial with quality chapters authored by leaders in the field - Ideal reference for those interested in the study of metabolism, metabolic tracing, isotopic labeling, and lipogenesis
The Glutamate/GABA-Glutamine Cycle
Fundamental biochemical studies of basic brain metabolism focusing on the neuroactive amino acids glutamate and GABA combined with the seminal observation that one of the key enzymes, glutamine synthetase is localized in astroglial cells but not in neurons resulted in the formulation of the term “The Glutamate-Glutamine Cycle.” In this cycle glutamate released from neurons is taken up by surrounding astrocytes, amidated by the action of glutamine synthetase to glutamine which can be transferred back to the neurons. The conversion of glutamate to glutamine is like a stealth technology, hiding the glutamate molecule which would be highly toxic to neurons due to its excitotoxic action. This...
Theatrical Costume, Masks, Make-up and Wigs
This is the first bibliography in its field, based on firsthand collations of the actual titles. Over 3500 detailed entries provide an invaluable guide for theatre students, practitioners and historians.
Advanced Diffusion Encoding Methods in MRI
The medical MRI community is by far the largest user of diffusion NMR techniques and this book captures the current surge of methods and provides a primary source to aid adoption in this field. There is a trend to adapting the more advanced diffusion encoding sequences developed by NMR researchers within the fields of porous media, chemical engineering, and colloid science to medical research. Recently published papers indicate great potential for improved diagnosis of the numerous pathological conditions associated with changes of tissue microstructure that are invisible to conventional diffusion MRI. This book disseminates these recent developments to the wider community of MRI researchers and clinicians. The chapters cover the theoretical basis, hardware and pulse sequences, data analysis and validation, and recent applications aimed at promoting further growth in the field. This is a fast moving field and chapters are written by key MRI scientists that have contributed to the successful translation of the advanced diffusion NMR methods to the context of medical MRI, from global locations.
