Literatura académica sobre el tema "Contraste dynamique"
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Artículos de revistas sobre el tema "Contraste dynamique"
Lassau, N. "Evaluation de la reponse therapeutique par echographie dynamique de contraste". Journal de Radiologie 89, n.º 10 (octubre de 2008): 1280. http://dx.doi.org/10.1016/s0221-0363(08)75813-x.
Texto completoEspinoza, S. y N. Siauve. "Terminologie en imagerie dynamique avec injection d’agent de contraste (DCE)". Journal d'imagerie diagnostique et interventionnelle 1, n.º 1 (febrero de 2018): 11–14. http://dx.doi.org/10.1016/j.jidi.2017.05.001.
Texto completoLassau, N., A. Brule, L. Chami, B. Benatsou, P. Péronneau y A. Roche. "Évaluation précoce des traitements anti-angiogéniques par échographie dynamique de contraste". Journal de Radiologie 89, n.º 5 (mayo de 2008): 549–55. http://dx.doi.org/10.1016/s0221-0363(08)71480-x.
Texto completoPlantet, M. M., A. Banal, V. Bécette, D. Stevens, V. Costes, M. El Khoury, F. Thévenin y C. Hagay. "Dynamique de prise de contraste des tumeurs des glandes salivaires en IRM". Journal de Radiologie 86, n.º 10 (octubre de 2005): 1380. http://dx.doi.org/10.1016/s0221-0363(05)75626-2.
Texto completoBouchard, Gérard y Jeannette Larouche. "Dynamique des populations locales : la formation des paroisses rurales au Saguenay (1840-1911)". Revue d'histoire de l'Amérique française 41, n.º 3 (24 de septiembre de 2008): 363–88. http://dx.doi.org/10.7202/304583ar.
Texto completoLux, G., F. Pierucci, R. Detreille, D. Roch, A. Moisei, T. Batch y A. Blum. "Comparaison de l’echographie de contraste avec l’IRM dynamique dans l’exploration des masses des tissus mous". Journal de Radiologie 89, n.º 10 (octubre de 2008): 1456. http://dx.doi.org/10.1016/s0221-0363(08)76443-6.
Texto completoVanbeckevoort, D. y E. Ponette. "Troubles fonctionnels du pharynx et de l'œsophage : évaluation par l'étude dynamique à produits de contraste". EMC - Radiologie et imagerie médicale - Abdominale - Digestive 4, n.º 1 (enero de 2009): 1–24. http://dx.doi.org/10.1016/s1879-8527(09)72834-5.
Texto completoKirszbaum, Thomas. "Intérêt commun et intérêt public : la philosophie des instruments d’intégration socio-urbaine aux États-Unis et en France". II Le quartier : quand le territoire se fait communauté?, n.º 52 (1 de marzo de 2005): 95–103. http://dx.doi.org/10.7202/010592ar.
Texto completoLe Corroller, T., P. Schmitz, P. Draho, P. Durez, F. Houssiau, B. Vande Berg, F. Lecouvet, B. Maldague y J. Malghem. "IRM avec etude dynamique du rehaussement de signal sous contraste pour l’evaluation des reponses therapeutiques de polyarthrites debutantes". Journal de Radiologie 86, n.º 10 (octubre de 2005): 1291. http://dx.doi.org/10.1016/s0221-0363(05)75327-0.
Texto completoDi Pede, Elena. "La question de l’étranger et de l’hospitalité chez les prophètes". Articles spéciaux 74, n.º 2 (19 de marzo de 2019): 255–66. http://dx.doi.org/10.7202/1058097ar.
Texto completoTesis sobre el tema "Contraste dynamique"
Pauzin, Marie-Christine. "Modélisation du comportement dynamique d'un agent de contraste ultrasonore". Phd thesis, Université de Provence - Aix-Marseille I, 2009. http://tel.archives-ouvertes.fr/tel-00430076.
Texto completoVan, der Grinten Maurits. "Diffusion des neutrons aux petits angles. Variation de contraste par polarisation dynamique". Paris 11, 1993. http://www.theses.fr/1993PA112213.
Texto completoAbe, Lyu. "Imagerie à haute dynamique : coronographie à contraste de phase et détecteurs spécifiques". Nice, 2002. http://www.theses.fr/2002NICE5733.
Texto completoThe existence of extra-solar planets was confirmed in the years 1990, and it is now challenging for astronomers to be able to directly observe them and determine their physical nature. The required performance in terms of high dynamic range imaging is about several tens of million, which has never been reached yet. In order to attain this goal, I have carried out a global reflection on this high dynamic range imaging theme through coronagraphy and specific detectors. The first part of this document is dedicated to the design of photon counting cameras using 800 by 600 pixels CCD with a frame rate of 100 images per second. These developments come within the scope of ground-based observations, especially for stellar coronagraphy and optical long baseline interferometry where the atmospheric turbulence coherence time is only about a few milliseconds in the visible spectrum. The operation of these cameras on the GI2T/REGAIN interferometer could validate my work through scientific programs for which I present the goals and obtained results. The second part more specifically focuses on coronagraphy with the study and the development of the phase knife coronagraph which ultimate goal is to "null" or reject the light from a distant star, so as to detect a faint orbiting companion. This instrument is theoretically compatible with the direct observation of extra-solar planets in terms of intensity ratio (several tens of million). In order to validate the physical principle of this concept, I have built a monochromatic laboratory prototype of this coronagraph, for which I give the obtained performance and extrapolate on the achromatisation possibilities aiming future ground-based observations
Rochefort, Ludovic de. "Imagerie dynamique et vélocimétrie IRM des gaz hyperpolarisés". Paris 11, 2006. https://tel.archives-ouvertes.fr/tel-00083287.
Texto completoThis work is part of a French project called R-MOD that aims at the development of a morpho-functional simulator of the upper and central airways. Here, hyperpolarized gas (HPG) MRI methods to visualize and quantify gas flows were developed to test the predictions of the simulator. To reach this goal, a dedicated MR-compatible device was built to administrate HPG in a controlled way and different imaging strategies were evaluated. A first qualitative approach was based on dynamic imaging of a HPG inspiration. An analysis of this type of experiment was achieved. The temporal evolution of the phenomenon is too high to be correctly imaged with the state-of-the-art techniques. Nevertheless, spatial distribution of the magnetization within the lung reaches an equilibrium state during a stationary inspiration. This equilibrium state depends on parameters that were explored both theoretically and experimentally through several dynamic imaging techniques. A second approach, more quantitative, is based on phase-contrast velocimetry combined with rapid radial imaging. The technique was first validated on known flow patterns (straight, curved and bifurcating pipes) and then applied on a realistic bronchial tree reconstructed from medical images and compared to computational fluid dynamics simulations. The 3 velocity components were measured within about 1 s, with 1-mm spatial resolution, and a precision of 1cm·s-1. Finally, in vivo feasibility was shown on a human trachea during an inhalation. This flow characterization technique based on HPG MRI is a promising tool for fluid dynamics studies and for related medical applications
Lasoroski, Aurélie. "Etude de complexes de gadolinium d’intérêt pour l’IRM : simulations ab-initio et propriétés magnétiques". Paris 6, 2013. http://www.theses.fr/2013PA066216.
Texto completoCurrently MRI exams use contrast agents to enhance contrast imaging and so diagnostics. A contrast agent is most of the time a gadolinium complex in which a chelate ligand is used to avoid Gd release, thus preventing toxic ion to spread in patient’s body. In this thesis we studied magnetic properties of gadolinium complexes that affect the relaxation of a water molecule coordinated to Gd, which is the source of contrast imaging. We focused on the commercial contrast agent ProHance, and some derivatives. The first step was to compute ab initio molecular dynamics of the different systems and analyse them. Then we calculated using quantum chemistry hyperfine interaction and Zero-Field Splitting. The analysis of hyperfine tensors was achieved for each system, and average terms were estimated. The origin of tensors’ fast fluctuations in ProHance system was identified thanks to geometrical collectives variables decomposition. ZFS was decomposed into two contributions: static and transient. We can now set up from ab initio all the necessary ingredients for modeling the electronic relaxation time and then the water coordinated molecule proton relaxation for each of the studied systems
Yerly, Fabrice. "Simulation de la structure et de la dynamique d'agents de contraste pour l'imagerie médicale par résonance magnétique /". [S.l.] : [s.n.], 2003. http://library.epfl.ch/theses/?nr=2834.
Texto completoDe, Rochefort Ludovic. "Imagerie dynamique et vélocimétrie IRM des gaz hyperpolarisés". Phd thesis, Université Paris Sud - Paris XI, 2006. http://tel.archives-ouvertes.fr/tel-00083287.
Texto completoPour atteindre cet objectif, un système adapté à l'environnement spécifique de l'IRM a été développé pour permettre l'administration de GHP de manière contrôlée, et différentes approches d'imagerie du flux de GHP ont été explorées.
La 1ère approche est basée sur de l'imagerie dynamique de l'inspiration de GHP. Ce type d'expérience est analysé. L'évolution du phénomène est trop rapide pour être observée correctement avec les techniques actuelles. Néanmoins, un état d'équilibre dynamique de la répartition spatiale de l'aimantation dans les poumons lors d'inspirations en régime stationnaire est observable. Les paramètres dont dépend cet équilibre et une partie de ce qui peut être quantifié par le biais de ce type d'expérience ont été formalisés et les concepts introduits ont été validés par différentes expériences d'imagerie dynamique.
La 2ième approche, quantitative, est basée sur la vélocimétrie par contraste de phase combinée à l'imagerie radiale rapide. D'abord validée quantitativement sur des fantômes d'écoulement connus (tube droit, coude, bifurcation), la technique a ensuite été appliquée sur un modèle réaliste d'arbre bronchique et comparée à une simulation numérique des écoulements. Les 3 composantes de la vitesse ont été mesurées en environ 1 s avec une résolution spatiale du mm et une précision du cm•s-1. Enfin, la faisabilité in vivo de la mesure de vitesse dans les voies aériennes pulmonaires a été démontrée dans la trachée lors d'une inspiration.
Cet outil de caractérisation des écoulements à l'aide de l'IRM des GHP ouvre des voies prometteuses aussi bien pour la physique des écoulements que pour les applications médicales.
Cwiek, Bellomo Ewa. "La dynamique des contrastes dans la construction romanesque chez Fred Vargas". Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM3074.
Texto completoBuilt on a network of contrasts, the romantic world of Fred Vargas bears the mask of detective fiction.The murders of the present hide the bruises of love in the past.Mediator between these diegetic poles,the passion of Vargas’s character breaches the rules of the game that is imposed on him by the world.For behind these civilized appearances ,the original order continues:predation. Confronted by his failure,the character must take up a challenge that will transform his investigation in a quest for identity. Selecting either transgression or self-sacrifice will determine whether he collapses or reappears with his dignity.Converging the plot and the Story, the diegetic here and now bestows upon the character the role of linking the Here and Elsewhere, and adverse identities. The enquiry approaches, the psyche of the murderer and the investigator, reconstituting the interaction between the individual and the world, defined as its synchronic and diachronic chronotope. The relationship between humans and their Others reveals the person behind the character.The confrontation between the human animal and real and mythologized animals challenges the borders between identity and otherness.The real murderer turns out to embody one of the masks of the imagination, while the imagination, established as an ideal of humanity, becomes a reality to conquer at the price of self-sacrifice, and reveals how flexible the realities of failure and fulfillment can be. Analysing the mirror effect between opposition and complementarity accentuates the union of opposites that create the coexistence of horror and the sublime, and love and death in the dichotomy that make up mankind and the world
Viverge, Kevin. "Modèle de plaques stratifiées à fort contraste : application au verre feuilleté". Thesis, Lyon, 2019. http://www.theses.fr/2019LYSET005/document.
Texto completoWidely used in recent years, the glass material makes it possible to erect light, aesthetic and resistant structures, in particular with glass lamination method, which consists in assembling two or more sheets of glass by one or more intermediate viscoelastic polymers layer. These viscoelastic interface layers are the source of interactions between the shear, the local bending and the global bending mechanisms that govern the overall behavior of laminated glass. For an optimal dimensioning and an accurate determination of the different fields, we propose a "highlycontrasted" plates model encapsulating these different mechanisms and their coupling. As long as a scale separation between the plate thickness and the caracteristic size of kinematics field variations exists, the asymptotic expansion method can be applied for the study of laminates. The effective plate behaviour is derived from the 3D constitutive law of the materials combined with an asymptotic expansion formulation and an appropriate scaling the tiffness contrast between stiff glass layers and soft viscoelastic polymer layers. The method provides a synthetic and consistent formulation, integrating the dual efforts of the macroscopic descriptors, in-plane and out-of-plane balance equations and the constitutive laws of the laminate. First the model is developped for a 2 stiff layers laminated glass plates, then different static and dynamic loading cases are applied. It is then extended to plates with 3 stiff layers and then generalized to plates with N stiff layers. Experimental campaigns are set up in order to validate the models. Finally, a case study of laminated glass floor design is proposed
Kenouche, Samir. "Études expérimentales et modélisation de la dynamique de distribution des agents de contraste en imagerie RMN : applications à l'agronomie". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2013. http://tel.archives-ouvertes.fr/tel-01019641.
Texto completoLibros sobre el tema "Contraste dynamique"
ANDREO-RAYNAUD, Grégoire y Nadhir DOUIDI, eds. Langue(s) en mondialisation. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.9782813004284.
Texto completoCapítulos de libros sobre el tema "Contraste dynamique"
Bouakaz, Ayache, Peggy Palanchon y Nico de Jong. "Dynamique de la microbulle". En Échographie de contraste, 25–43. Paris: Springer Paris, 2007. http://dx.doi.org/10.1007/978-2-287-33297-5_2.
Texto completoDaverne, Carole. "Les élèves des classes préparatoires aux grandes écoles : un rapport au temps, des « choix » et des parcours contrastés". En Les dynamiques des parcours sociaux, 59–70. Presses universitaires de Rennes, 2012. http://dx.doi.org/10.4000/books.pur.67599.
Texto completoCharvet, Jean-Paul y Michel Sivignon. "Chapitre 7 - Agricultures et espaces ruraux: des dynamiques contrastées". En Géographie humaine, 189–220. Armand Colin, 2011. http://dx.doi.org/10.3917/arco.charv.2011.01.0189.
Texto completoFaget, Daniel. "Entre ruptures et dynamisme. Contrastes halieutiques du XVIIIe siècle". En L’écaille et le banc, 157–97. Presses universitaires de Provence, 2017. http://dx.doi.org/10.4000/books.pup.45378.
Texto completoMendy, P. "La dynamique contrastée de la gestion des espaces littoraux de la Guinée-Bissau". En Dynamique et usages de la mangrove dans les pays des rivières du Sud, du Sénégal à la Sierra Leone, 195–208. IRD Éditions, 1991. http://dx.doi.org/10.4000/books.irdeditions.3895.
Texto completoMukařovský, Jan. "La norme esthétique". En Jan Mukarovsky. Ecrits 1928-1946, 267–72. Editions des archives contemporaines, 2018. http://dx.doi.org/10.17184/eac.1434.
Texto completoRice, Christina. "Kick-starting a Career". En Mean...Moody...Magnificent!, 115–28. University Press of Kentucky, 2021. http://dx.doi.org/10.5810/kentucky/9780813181080.003.0011.
Texto completoWeltak, Marcel. "Surinamese Jazz in the Netherlands". En Surinamese Music in the Netherlands and Suriname, 73–85. University Press of Mississippi, 2021. http://dx.doi.org/10.14325/mississippi/9781496816948.003.0007.
Texto completoBARRERE, Christian. "Covid-19 : le retour du collectif". En Les épidémies au prisme des SHS, 155–66. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.6001.
Texto completoActas de conferencias sobre el tema "Contraste dynamique"
Claerbout, Jon. "Inverse problems in reflection seismology". En Signal Recovery and Synthesis. Washington, D.C.: Optica Publishing Group, 1998. http://dx.doi.org/10.1364/srs.1998.stha.1.
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