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Статті в журналах з теми "Imagerie CEST":
Jamal, Saleha, and Md Ashif Ali. "Remote Sensing Application for Exploring Land Use and Land Cover Dynamics in and Around Chatra Wetland, English Bazar, West Bengal." Creative Space 9, no. 1 (July 6, 2021): 15–27. http://dx.doi.org/10.15415/cs.2021.91002.
Nadel, Jacqueline. "L’autre, milieu mental de nos vies." La Pensée N° 416, no. 4 (December 31, 2023): 58–68. http://dx.doi.org/10.3917/lp.416.0058.
Moulin, Joanny. "Creole Baroque in Derek Walcott’s Archipelagic Imagery." Commonwealth Essays and Studies 28, no. 2 (April 1, 2006): 73–79. http://dx.doi.org/10.4000/ces.10239.
Omhovère, Claire. "Incorporating Otherness: Food Imagery in Anita Desai’s In Custody." Commonwealth Essays and Studies 31, no. 2 (April 1, 2009): 107–15. http://dx.doi.org/10.4000/ces.8924.
RANA, RANBIR SINGH, VAIBHAV KALIA, R. M. BHAGAT, and SHARDA SINGH. "Extreme snowfall event analysis and its impacts on agriculture and horticultural crops in western Himalaya, India." MAUSAM 68, no. 3 (December 2, 2021): 543–50. http://dx.doi.org/10.54302/mausam.v68i3.709.
Mundhe, Nitin. "Multi-Criteria Decision Making for Vulnerability Mapping of Flood Hazard: A Case Study of Pune City." Journal of Geographical Studies 2, no. 1 (March 13, 2019): 41–52. http://dx.doi.org/10.21523/gcj5.18020105.
Saayman, Sandra. "The Resurgence of Prison Imagery in Breyten Breytenbach’s A Veil of Footsteps." Commonwealth Essays and Studies 31, no. 1 (September 1, 2008): 69–79. http://dx.doi.org/10.4000/ces.9027.
Pazhanivelan, S., P. Kannan, P. Christy Nirmala Mary, E. Subramanian, S. Jeyaraman, A. Nelson, T. Setiyono, F. Holecz, M. Barbieri, and M. Yadav. "Rice Crop Monitoring and Yield Estimation Through Cosmo Skymed and TerraSAR-X: A SAR-Based Experience in India." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-7/W3 (April 28, 2015): 85–92. http://dx.doi.org/10.5194/isprsarchives-xl-7-w3-85-2015.
Lovett, Jon C., and Erik Prins. "Estimation of land-use changes on Kitulo Plateau, Tanzania, using satellite imagery." Oryx 28, no. 3 (July 1994): 173–82. http://dx.doi.org/10.1017/s0030605300028532.
Parker, John K., Martin I. Jones, and Geoff P. Lovell. "Involuntary imagery predicts athletes’ affective states." Sport & Exercise Psychology Review 13, no. 2 (September 2017): 22–31. http://dx.doi.org/10.53841/bpssepr.2017.13.2.22.
Дисертації з теми "Imagerie CEST":
Pépin, Jérémy. "Développement de l’imagerie métabolique par IRM-CEST : application à la maladie de Huntington." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS032/document.
Huntington's disease (HD) is a inherited neurodegenerative disease affecting the brain. This disease is characterized by clinical symptoms such as psychiatric, cognitive and motor disorders worsening over time. These deficiencies are due to an abnormal increase in the size of the CAG repeats in the gene encoding the huntingtin protein. Thisaccumulates in the brain cells and causes their death. Previous studies have shown that the metabolic profile measured in ¹H NMR spectroscopy can be altered in patients with this disease as well as major atrophy of certain structures of the brain. Hypotheses involving defects in energy metabolism have been advanced to explain partially the pathophysiology of the disease. The metabolic actors could thus be biomarkers of interest. Using a promising MRI modality called Chemical Exchange Saturation Transfer (CEST), it is possible to detect low-concentrated labile protons that are classically undetectable in MRI. It thus becomes possible to map in vivo the distribution of metabolites such as glutamate (which is a neurotransmitter) or glucose (which is the fuel of cells) which are potentially involved in neurodegenerative diseases. The methodological developments carried out during this thesis were then applied to rodent models of Huntington's disease (KI140 mice, R6/1 mice, BACHD rats) in order to identify potential biomarkers of the pathology and to evaluate the relevance of these innovative MRI methods. All of these results and methods implemented during this thesis show the potential of CEST imaging for the study of neurodegenerative diseases
Delebarre, Thaddée. "Development of fast and robust metabolic imaging in humans at high magnetic field." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPAST001.
Chemical Exchange Saturation Transfer Magnetic Resonance Imaging (CEST MRI) represents a powerful tool for the study of metabolism, offering superior temporal and spatial resolution as well as increased sensitivity compared to Magnetic Resonance Spectroscopy (MRS). CEST MRI enables the indirect detection of certain metabolites through the interaction between their labile protons and those of bulk water. CEST can map glucose, glutamate, creatine, which are important metabolites involved in cancers, and neurodegenerative and musculoskeletal diseases, representing therefore a promising bioimaging tool. The rapid development of high magnetic field MRI ((≥7 T) in recent decades greatly benefits CEST, opening up new applications and generating growing interest.The aim of this thesis is to develop CEST MRI in a clinical context, taking full advantage of high magnetic fields to increase the robustness and speed of CEST acquisitions. To this end, we focus on two main objectives. The first is to develop the CEST imaging method in a clinical environment, overcoming the practical limitations associated with high-field clinical MRI scanners, notably the strict constraints of Specific Absorption Rate (SAR) and RadioFrequency (RF) field heterogeneities (B1).To achieve this first objective, a parallel transmission CEST sequence was developed. Parallel transmission uses a multi-channel RF transmit antenna, which can be controlled independently to reduce B1 heterogeneity. Moreover, parallel transmission also allows optimized energy management using virtual observation points (a strategy developed in the laboratory) By making use of parallel transmission we have implemented an acquisition strategy which allowed us to produce CEST images with three times less B1 heterogeneity, and two times faster than compared to the state of the art literature reports.The second objective is to evaluate the performance of CEST, glucose, and glutamate weighted, in detecting and characterizing normal and pathological aging. A clinical study was carried out, involving young and elderly healthy volunteers as well as Alzheimer’s disease (AD) patients. The results showed that CEST can detect global variations in glutamate and glucose in the brain associated with aging. The acquisition and exploitation of data from AD patients is still in progress.In conclusion, this thesis has enabled the development of high-field CEST methods and the evaluation of their performance in the study of aging. These results open up encouraging prospects for the use of CEST as a biomarker of AD and other neurodegenerative diseases
Chahid, Bochra. "Développement et caractérisation de nouveaux agents de contraste lipidiques ultrasensibles pour l'imagerie par résonnance magnétique destinés à l'imagerie moléculaire." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA114867/document.
The effect of paramagnetic compounds in the chemical shift of endogenous protons, i.e., their resonance frequency, widely used in conventional NMR, can also be a tool to modulate the contrast in magnetic resonance imaging (MRI) by achieving frequency-encoded images depending on the nature or the environment of the entity or tissue to be revealed. This approach involves the transfer of magnetization by chemical exchange of protons also referred to as "Chemical Exchange Saturation Transfer" (CEST). The principle consists in selectively saturate by applying a radio frequency pulse, the signal of labile protons transiently belonging to the structure of the contrast agent or to the water molecules which are associated transiently to it. The image then results from the alteration of the signal of the exchanged protons. The method is based on the actual existence of two sets of protons or pools with two distinct resonance frequencies, one corresponding to the protons associated with the contrast agent and the other represented by the surrounding bulk water.LipoCEST systems, liposomes encapsulating a paramagnetic lanthanide complex, allows such a differentiation of two proton pools constituted on one hand by the water molecules contained in the inner cavity of the liposomes (with a resonance frequency changed by the paramagnetic agent ) and on the other hand by the water present outside the vesicle structure. The sensitivity of such systems is mainly due to the large number of protons in the inner pool. The nature of the paramagnetic agent plays a role in the selectivity of the CEST effect while the nature of the liposome membrane and related permeability behavior controls the proton exchange kinetics between the two water pools. These two parameters must be selected and adjusted to provide effective CEST contrast.The work in this thesis aimed at such a development by optimizing liposome systems for MRI-CEST after intravenous administration. Therefore, the diameter of the liposomes was set below 200 nm and their surface covered by chains of poly (ethylene glycol) to ensure stability in the blood compartment. The choice of chemical shift agents based on lanthanide complexes, mainly thulium-based derivatives, was established from their structural and magnetic properties. The methodology specially developed to encapsulate these entities into vesicles of different membrane composition and permeability to water allowed to generate a new LipoCEST contrast agent
Flament, Julien. "Développement de l'imagerie RMN par agents CEST : application à un modèle rongeur de tumeur cérébrale." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00720031.
Dorgans, Magali. "Créativité, imagerie mentale et fonctions exécutives : étude expérimentale des relations entre ces trois concepts chez l'homme adulte." Poitiers, 2008. http://www.theses.fr/2008POIT2347.
Terreaux, Eugénie. "Théorie des Matrices Aléatoires pour l'Imagerie Hyperspectrale." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC091/document.
Hyperspectral imaging generates large data due to the spectral and spatial high resolution, as it is the case for more and more other kinds of applications. For hyperspectral imaging, the data complexity comes from the spectral and spatial heterogeneity, the non-gaussianity of the noise and other physical processes. Nevertheless, this complexity enhances the wealth of collected informations, that need to be processed with adapted methods. Random matrix theory and robust processes are here suggested for hyperspectral imaging application: the random matrix theory is adapted to large data and the robustness enables to better take into account the non-gaussianity of the data. This thesis aims to enhance the model order selection on a hyperspectral image and the unmixing problem. As the model order selection is concerned, three new algorithms are developped, and the last one, more robust, gives better performances. One financial application is also presented. As for the unmixing problem, three methods that take into account the peculierities of hyperspectral imaging are suggested. The random matrix theory is of great interest for hyperspectral image processing, as demonstrated in this thesis. Differents methods developped here can be applied to other field of signal processing requiring the processing of large data
Книги з теми "Imagerie CEST":
BRETEGNIER, Aude, Vera DELORME, and Laura NICOLAS, eds. "L'interculturel" dans l’enseignement supérieur. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.9782813004031.
Частини книг з теми "Imagerie CEST":
RIGNEAULT, Hervé, and Julien DUBOISSET. "Imagerie Raman cohérente." In Spectroscopies vibrationnelles, 273–88. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.4204.
CORBIN, Nadège, Sylvain MIRAUX, Valéry OZENNE, Émeline RIBOT, and Aurélien TROTIER. "Imagerie rapide et techniques d’accélération." In Les enjeux de l’IRM, 57–81. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9113.ch3.
LEPORQ, Benjamin, Thomas CHRISTEN, and Ludovic DE ROCHEFORT. "IRM contraint par le modèle physique : quantification multiparamétrique rapide." In Les enjeux de l’IRM, 285–319. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9113.ch10.
SOULEZ, Ferréol, and Éric THIÉBAUT. "Les problèmes inverses pour la reconstruction d’image en holographie." In Imageries optiques non conventionnelles pour la biologie, 71–102. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9132.ch3.
Carpenter, Thomas H. "Sources." In Dionysian Imagery in Fifth-Century Athens, 1–14. Oxford University PressOxford, 1997. http://dx.doi.org/10.1093/oso/9780198150381.003.0001.
GARCIA, C., L. BORDIER, and H. MAYAUDON. "Conduite à tenir devant un nodule thyroïdien." In Médecine et Armées Vol. 44 No.3, 217–22. Editions des archives contemporaines, 2016. http://dx.doi.org/10.17184/eac.6810.
James, Simon. "Epilogue and Prospect." In The Roman Military Base at Dura-Europos, Syria. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198743569.003.0031.
Chowdhury, Rinku Roy, and Laura C. Schneider. "Land Cover and Land Use: Classification and Change Analysis." In Integrated Land-Change Science and Tropical Deforestation in the Southern Yucatan. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780199245307.003.0015.
Тези доповідей конференцій з теми "Imagerie CEST":
Saponaro, Mirko, Eufemia Tarantino, and Umberto Fratino. "Generation of 3D surface models from UAV imagery varying flight patterns and processing parameters." In CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5114292.
Candiano, Alessio, Gabriele Fargione, Andrea Gennaro, Michele Mangiameli, and Giuseppe Mussumeci. "Experimental band combination of multispectral satellite imagery for the analysis and classification of archaeological features." In CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5114285.
Gossiome, C., F. Rufino, G. Herve, M. Benassarou, P. Goudot, V. Descroix, and G. Lescaille. "Découverte fortuite d’une lésion mandibulaire, un cas de kyste anévrismal." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206603020.
Storie, Jill, Rafael Ramos, Michael Leber, Heather Nowak, Michelle Young, and Bruce Magnell. "Evaluation of Loop Current/Loop Current Eddy Fronts to Guide Offshore Oil & Gas Operations." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32643-ms.