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Literatura académica sobre el tema "Imagerie à particules magnétiques"
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Artículos de revistas sobre el tema "Imagerie à particules magnétiques"
LAFOURCADE, P., P. RUMEAU, S. DE RÉGLOIX y P. H. SAVOIE. "Pathologies traumatiques de l’articulation tibio-fibulaire proximale : revue de la littérature à propos d’un cas". Médecine et Armées Vol. 42 No. 2, Volume 42, Numéro 2 (1 de abril de 2014): 171–76. http://dx.doi.org/10.17184/eac.6990.
Texto completoZaoui, Amine, Jean Langlois, Christophe Nich, Morad Bensidhoum, Delphine Logeart-Avramouglou, Caroline Scemama, Hervé Petite y Moussa Hamadouche. "Imagerie in vivo de l’inflammation aux particules d’usure de polyéthylène dans un modèle d’ostéolyse murin". Revue de Chirurgie Orthopédique et Traumatologique 100, n.º 7 (noviembre de 2014): S314—S315. http://dx.doi.org/10.1016/j.rcot.2014.09.252.
Texto completoMinc, Nicolas, Marcela Slovakova, Kevin D. Dorfman, Claus Fütterer, Plamen Bokov, Zuzana Bilkova, Claire Smadga, Myriam Taverna y Jean-Louis Viovy. "Systèmes microfluidiques de particules magnétiques auto-assemblées; Application à la séparation d’ADN et à la digestion de protéines." La Houille Blanche, n.º 4 (julio de 2006): 51–54. http://dx.doi.org/10.1051/lhb:200604007.
Texto completoBoughedaoui, Rachid, Mohamed Cherif Azzaz, Mohamed Tahar Melouah, Abdennour El Mohri, M. Zergoug, Azzeddine Lounis y Mohamed Azzaz. "Structure, Microstructure and Magnetic Properties of Nanostructured Alloys Fe-Nd-B Prepared by Mechanical Alloying". Journal of Nano Research 55 (noviembre de 2018): 11–21. http://dx.doi.org/10.4028/www.scientific.net/jnanor.55.11.
Texto completoAmara, M. K. y C. Özkul. "Vélocimétrie par imagerie de particules holographique: enregistrement simultané de plusieurs nappes par codage de cohérence dans un cristal photoréfractif Holographic particle image velocimetry: simultaneous recording of several light sheets by coherence encoding in a photorefractive crystal". Journal of Optics 28, n.º 4 (agosto de 1997): 173–80. http://dx.doi.org/10.1088/0150-536x/28/4/005.
Texto completo"Particules magnétiques, microplaques et purification". Revue Française des Laboratoires 2000, n.º 321 (marzo de 2000): 82. http://dx.doi.org/10.1016/s0338-9898(00)80444-8.
Texto completoSabouraud, Pascal. "Conduite à tenir devant une première crise d'épilepsie". Epileptic Disorders 3, SP2 (diciembre de 2001). http://dx.doi.org/10.1684/j.1950-6945.2001.tb00416.x.
Texto completoCoriat, R. "Les nouvelles techniques diagnostiques des tumeurs neuroendocrines pancréatiques". Oncologie, 2020. http://dx.doi.org/10.3166/onco-2019-0046.
Texto completoAdmin - JAIM. "Résumés des conférences JRANF 2021". Journal Africain d'Imagerie Médicale (J Afr Imag Méd). Journal Officiel de la Société de Radiologie d’Afrique Noire Francophone (SRANF). 13, n.º 3 (17 de noviembre de 2021). http://dx.doi.org/10.55715/jaim.v13i3.240.
Texto completoTesis sobre el tema "Imagerie à particules magnétiques"
Billotey, Claire. "Etude des propriétés des nanoparticules magnétiques anioniques pour l' application au marquage cellulaire direct et la détection in vivo par imagerie par résonance magnétique". Paris 7, 2003. http://www.theses.fr/2003PA077015.
Texto completoWandelt, Burkhard. "Analyse de la formation des dépôts de particules lors d'un procédé d'ultrafiltration tangentielle : visualisation par imagerie à résonance magnétique nucléaire". Toulouse, INPT, 1993. http://www.theses.fr/1993INPT029H.
Texto completoPedron, Swannie. "Ιmagerie mοléculaire utilisant des micrοparticules d'οxyde de fer pοur la détectiοn de l'inflammatiοn cardiaque (par Ιmagerie par Résοnance Μagnétique) et de l'inflammatiοn pulmοnaire (par Ιmagerie à Ρarticules Μagnétiques - ΙΡΜ οu ΜΡΙ)". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC419.
Texto completoConventional imaging methods such as cardiac MRI and thoracic CT scans are commonly used for diagnosing cardiovascular and pulmonary diseases. However, they only identify functional and anatomical abnormalities, and detecting the inflammatory component involved in these pathologies remains challenging. In this thesis, we develop a new molecular imaging approach called "immunoMRI," which targets endothelial adhesion molecules involved in recruiting leukocytes to inflammatory sites. Using iron oxide microparticles conjugated with a VCAM-1 antibody (MPIO@αVCAM-1), we assessed the ability of immuno-MRI to specifically detect cardiac inflammation in vivo in animal models of septic cardiac dysfunction and experimental autoimmune myocarditis (EAM). We also compared the effectiveness of immuno-MRI in detecting cardiac inflammation to late gadolinium enhancement, which is used in clinical practice and considered the gold standard for myocarditis diagnosis. In the second part of this work, we developed the use of a new imaging device called "Magnetic Particle Imaging" (MPI), which detects iron oxide particles to create whole-body images without using ionizing radiation. Through models of sepsis and infectious respiratory disease, we demonstrated that MPI coupled with MPIO@αVCAM-1 is a rapid, sensitive, and non-invasive tool for detecting pulmonary inflammation. Our data provide the first evidence suggesting the potential future application of immuno-MRI and MPI for diagnosing inflammatory cardiac and pulmonary conditions
Babataheri, Avin. "Cils artificiels : modèle physique pour la propulsion ciliée". Phd thesis, Paris 6, 2009. http://pastel.archives-ouvertes.fr/pastel-00566532.
Texto completoDeviers, Alexandra. "Imagerie par résonnance magnétique multimodale, en particulier imagerie spectroscopique, du glioblastome : évaluation de facteurs prédictifs de réponse à la radiothérapie". Toulouse 3, 2014. http://www.theses.fr/2014TOU30057.
Texto completoGlioblastoma (GBM), the most common primary brain tumor in adults, is associated with poor prognosis as local relapse occurs several months after chemo-radiotherapy (RT). New therapeutic strategies are coming to the fore, some of which propose to use imaging biomarkers in order to provide relevant prognostic information or identify pre-RT high relapse risk areas needing to be boosted. The aim of this work was to identify pre-RT MRI markers able to predict relapse location and survival in a cohort of 18 GBM patients included in a phase II clinical trial and treated with RT and Tipifarnib. Data from 3D 1H-Magnetic Resonance Spectroscopic Imaging (3D-MRSI) and diffusion MRI were analysed using a voxel-based spatial comparison of baseline (pre-RT) and relapse images. Three relevant metabolic indices were thus identified: Lactate/N-Acetyl-Aspartate (NAA)> 0. 4; Choline (Cho)/Creatine >1. 63 and Cho/NAA >1. 12. The spatial distribution of these MRSI biomarkers is significantly associated with the site of relapse; furthermore, the magnitude of these metabolic disturbances seems to be correlated with early relapse. These interesting results should be validated in a larger cohort of GBM patients currently included in a prospective phase III clinical trial. The various techniques implemented in this work shall be used in this new study, not only for the evaluation of MRSI and MR diffusion biomarkers, but also for the analysis of perfusion and tensor diffusion imaging
Carletto, Philippe. "Structures et rhéologie d'une suspension de particules magnétiques". Nice, 2001. http://www.theses.fr/2001NICE5608.
Texto completoWe have studied and worked out a model which predicts the formation of structures obtained by application of a magnetic field on a Magneto-Rheological suspension (MR). This reversible aggregation is due to a magnetization of the particles, itself connected to a difference in permeability between the particles and the suspending fluid. Two forces intervene in this process : the force of magnetic interaction between the particles and the thermodynamic force. We determined experimentally the parameters characterizing the structures formed in unidirectional field (structure of columns) and in rotating field. In this last case one observes the formation of a periodic structure in parallel plans situated in the plan of rotation of the field. A theoretical model based on a minimization of energy allows finding quantitatively the observations obtained in unidirectional field. On the other hand, in rotating field, the agreement is quantitative only to decrease the energy of surface. During this study we put in evidence a new instability of collective rotation of the aggregates. The last part of my work consisted in measuring the shear moduli in the presence of various types of structure. We showed that for the same magnetic field, the shear moduli depended strongly on the structure. We also put in evidence a critical deformation bounding the passage between a regime of oscillation of the aggregates in a nonlinear regime of fragmentation-restructuration, we were able to find, by means of a model the critical shear observed for perpendicular plans in the shear
Prevot, Geoffrey. "Plateforme de nanoémulsions destinées au diagnostic et à la thérapeutique". Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0195.
Texto completoOil in water (O/W) nanoemulsions have been used for over 50 years in human clinics as a lipids source in parenteral nutrition. Even if nanoemulsions have recently emerged as vehicles for lipophilic active pharmaceutical ingredient (API) their use as a therapeutic or diagnostic agent is still under-exploited. The objective of this Ph.D thesis was to develop an nanoemulsions platform as an alternative to conventionally used nanosystems. In this work, 2 applications have been studied: the diagnosis of vulnerable plaque in atherosclerosis, and the treatment of Parkinson's disease. Nanoemulsions have been functionalized with humanized antibody targeting atheroma and loaded with magnetic particles as molecular contrast agents for magnetic resonance imaging (MRI) and an emerging technique: magnetic particle imaging (MPI). The successful plaque targeting has been demonstrated in atheromatous mice. The inclusion of original and ultra-bright lipophilic chromophores as well as the loading of API have paved the way to the development of multimodal and theranostic formulations. Therapeutic nanoemulsions against Parkinson’s disease have been developed to restore lysosomal pH of dopaminergic neurons with acidic polymer (PLGA). Acidification dysfunction leads to cell death due to the accumulation of waste inside neurons. The formulation has been optimized for brain delivery through intravenous or intranasal administration. The results show brain delivery in vivo trough intravenous injection associated with a pH rescue in vitro. The perspectives will focus on optimizing this platform and use it for new applications such as magnetic hyperthermia in cancers
Germain, Matthieu. "Applications des nanomatériaux en biologie : de l’encapsulation de cellules aux particules magnétiques". Toulouse 3, 2006. http://www.theses.fr/2006TOU30136.
Texto completoThe aim of our studies was to translate nanomaterials progresses in biological applications. The assembly of polyelectrolytes by electrostatic interactions leads to the formation of multilayer films with tunable properties. Here we have applied this technique for polyelectrolytes multilayer formation onto the surface of adherent mammalian cells. Polyelectrolytes properties allow a better control of molecule diffusion across the film and give new outlooks for cells encapsulation and its applications. Nanomaterials were also used for the elaboration of two kinds of composite capsules: (liposome / reticulated polyelectrolytes) and (liposome / silica) capsules which present a better stability and allow a more efficient control of their permeability. In collaboration with the start-up Nanobiotix, magnetic nanoparticles activable by external magnetic field and specifically targeted against tumoral cells have been designed, leading to new development of nanotechnologies in physical anticancer therapies
Chong, Céline. "Élaboration de particules de polymère magnétiques multifonctionnelles pour la préparation d'échantillons biologiques". Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10333/document.
Texto completoThis thesis describes the synthesis of magnetic latexes which are able to capture and release various microorganisms via non-specific and electrostatic interactions. Cationic iron oxide nanoparticles stabilized by nitrate counterions were synthesized by the co-precipitation of iron salts in water. The surface of the asobtained maghemite was then modified by a sol-gel process using a methacrylate-functionalized organosilane, in order to incorporate the iron oxide nanoparticles into latex particles by copolymerization reactions. Magnetic particles were obtained by dispersion, emulsion or miniemulsion polymerization of styrene or methyl methacrylate, performed in the presence of iron oxide. Due to the interaction between the stabilizers and iron oxides, dispersion polymerization was not a suitable approach. On the other hand, (mini-)emulsion polymerization led to a large range of particle diameters (140 – 650 nm), according to the process used to disperse iron oxides prior to the polymerization. These latexes contained between 2 and 37 % of magnetic particles, incorporating up to 91% of iron oxide. But the size distribution remained quite broad in all cases. The functionalization of the as-prepared magnetic particles was then undertaken by the introduction of either a charged co-monomer or polyelectrolytes or polyampholytes reactivable during the polymerization process. These kinds of polymers were synthesized by RAFT polymerization. Their ability to capture and release microorganisms was tested on silica-based model systems. Polyampholytes displayed good results on several microorganisms
Datta, Subhadeep. "Propriétés de transport électronique de nanotubes de carbone remplis de particules magnétiques". Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENY008.
Texto completoCarbon Nanotubes at low temperature behave as Quantum Dots for which charging processes become quantized, giving rise to Coulomb Blockade depending upon the coupling to the leads. Any small change in the electrostatic environment (tuned by the gate electrode) can induce shift of the stability diagram (so called Coulomb Diamonds) of the device, leading to conductivity variation of the Quantum Dot. A carbon nanotube can therefore be a very accurate electrometer. For example, if a magnetic system is electronically coupled to a nanotube, its electron conduction may be influenced by the spin state of the magnetic system (magneto- Coulomb effect). In this thesis, we report on the electrical transport measurements of such hybrid systems where a carbon nanotube is filled with magnetic nanoparticles such as Iron(Fe). We find that low-temperature (~40mK) current-voltage measurements of such devices can show a hysteretic behaviour in conductance with sharp jumps at certain magnetic fields. We explain the results in terms of the magneto-Coulomb effect where the spin flip of the iron island at non-zero magnetic field causes an effective charge variation in the Nanotube due to the Zeeman energy. Our studies are a step forward towards the study of the magnetic anisotropy of individual nanoparticles. We believe our findings have important implications for sensitive magnetic detectors to study the magnetization reversal of individual magnetic nanoparticle or molecule, even weakly coupled to a carbon nanotube
Libros sobre el tema "Imagerie à particules magnétiques"
Benhama, Abdelouhab. Le mouvement réel des particules en sismique: Polarisation, détection automatique des arrivées. Paris: Technip, 1985.
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