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Academic literature on the topic 'Sonde multimodale'
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Journal articles on the topic "Sonde multimodale"
Yuan, Shihao, Hong Zhao, Jing Liu, and Binjie Song. "Self-organizing map based differential evolution with dynamic selection strategy for multimodal optimization problems." Mathematical Biosciences and Engineering 19, no. 6 (2022): 5968–97. http://dx.doi.org/10.3934/mbe.2022279.
Full textLópez Piloto, Orestes, Silvia Salva Camaño, Juan Escuela Martín, Tania Hernández Cruz, and Ernesto Ardisana Santana. "Cirugía guiada por radio-fluorescencia concomitante en glioma de alto grado. Estudio Cohorte." Revista Chilena de Neurocirugía 45, no. 1 (October 4, 2019): 26–33. http://dx.doi.org/10.36593/rev.chil.neurocir.v45i1.6.
Full textVega-Benavides, Karen L. "Extracción dentaria como tratamiento de estomatitis linfocítica plasmocítica felina." Ciencias Veterinarias 36, no. 3 (December 31, 2018): 19. http://dx.doi.org/10.15359/rcv.36-3.11.
Full textMarisa Mariscal Flores, Flor Rey Tabasco, and Virginia Jiménez Carneros. "Anestesia en cirugía colorrectal." Revista Electrónica AnestesiaR 16, no. 11 (December 2, 2024). https://doi.org/10.30445/rear.v16i11.1214.
Full textGil Villa, Sergio Alberto. "Prostatectomía radical robótica en pacientes con cáncer de próstata de alto riesgo." Revista Mexicana de Urología 78, no. 1 (February 23, 2018). http://dx.doi.org/10.48193/rmu.v78i1.124.
Full textGil Villa, Sergio Alberto. "Prostatectomía radical robótica en pacientes con cáncer de próstata de alto riesgo." Revista Mexicana de Urología 78, no. 1 (February 23, 2018). http://dx.doi.org/10.48193/revistamexicanadeurologa.v78i1.124.
Full textLê Văn, Dũng. "Đánh giá giảm đau đa mô thức trong việc áp dụng ERAS cho phẫu thuật lấy thai cấp tại bệnh viện Trung ương Huế." Journal of Clinical Medicine- Hue Central Hospital, no. 87 (May 16, 2023). http://dx.doi.org/10.38103/jcmhch.87.1.
Full textNordkvelle, Yngve. "Digital Storytelling – Special issue." Seminar.net 6, no. 2 (November 24, 2010). http://dx.doi.org/10.7577/seminar.2427.
Full textDissertations / Theses on the topic "Sonde multimodale"
Henry, Lucas. "Sondes multimodales Re(CO)₃ pour la détection intracellulaire : synthèse, étude physico-chimique et sur cellules." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE026.
Full textQuestions of intracellular detection and cell-mediated localization of transition metal complexes are major in the context of metal complex development in biology and medicine. A compound must reach its cellular target to be pharmacologi- cally active: the localization is therefore a key parameter of activity. To study it, it is necessary to have probes and cell imaging techniques. Metal carbonyls are ideal candidates for multimodal bioimaging in fluorescence, infrared and X-ray fluorescence imaging. As they have been developed as "Single Core Multimodal Probe for Imaging" (SCoMPI), this thesis deals with the development, the study and the use of a rhenium-tricarbonyl unit [LRe(CO)₃X] (L = pyridyl-1,2,3-triazole, X = Cl−) as X-ray fluorescence probe for cellular imaging. We conjugated the Re(CO)₃ graftable probe to compounds of interest (hyaluronic acid, ferrocifens) in order to study their penetration and location in cells or in the skin, and we modified Re(CO)3 conjugates by organelles targeting groups (TPP, peptide, etc.) in order to develop species that were characterized in biological context by different analytical techniques and imaged by different microscopy techniques
Cave, Charlotte. "Aza-BODIPY-métaux : vers une nouvelle classe de sondes multimodales fluorescentes." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK075.
Full textNowadays, molecular imaging has become an indispensable ally in medicine, particularly in cancer treatment, supporting diagnosic accuracy, personalized treatment planning, and, more recently, fluorescence-guided surgery (FGS). In recent years, fluorescence optical imaging has gained interest for in vivo pre-clinical and even clinical applications, particularly due to FGS and the use of NIR-I fluorophores (700-900 nm). However, the effectiveness of this technique is limited by its low tissue penetration depth. To adress this limitation, combining fluorescence imaging with radioisotopic imaging (PET or SPECT) enables reliable correlation between preoperative imaging and peroperative tumor visualization. That is why, bimodal probes development is a challenge in terms of design and synthesis. AzaBODIPYs, known for their chemical and photochemical stability, form a core area of expertise in our laboratory. In previous work, our team developped a bioconjugable, water-soluble OI/TEP probe. However, the synthesis of this molecule is complex and time-consuming. Furthemore, the separation of the two modalities in the probe increases the risk of dissociation upon degradation, potentially impacting signal reliability without this being detectable. Therefore, the primary goal of this thesis was to design a new class of more compact and smart bimodal probes, where the radioisotopic element is directly integrated into the fluorophore. This azaBODIPY/coordination chemistry approach aims to create stable, biocompatible systems compatible with radiolabeling requirements. This manuscript describes the synthesis of new ligands and their corresponding complexes as well as their chemical and photophysical characterization. It also covers synthetic optimisation efforts, water-solubilization of the systems, and potential targeting strategies. A dedicated chapter focuses on the biological evaluation of the most promising systems and their in vivo validation as bimodal probes
Tran, Vu Long. "Synthesis, Functionalization and Characterization of Ultrasmall Hybrid Silica Nanoparticles for Theranostic Applications." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1020/document.
Full textHybrid nanoparticles (NPs) can combine unique physical properties for imaging and therapeutic applications of inorganic elements in bio-friendly organic structures. However, their uses in medicine are limited by the potential risks of long-term toxicities. In this context, ultrasmall renal clearable NPs appear as novel solutions. Silica based NP displaying gadolinium chelates named AGuIX (Activation and Guidance for Irradiation by X-ray) has been developed to have hydrodynamic diameter less than 5 nm which allows rapid elimination through urine after intravenous injection. This NP has been demonstrated as an efficient multimodal imaging probe and a local enhancer for radiotherapy for cancer diagnostics and treatment. It is now being evaluated in a phase I clinical trial by radiotherapy of cerebral metastases (NANO-RAD NCT02820454). Nevertheless, the synthesis of AGuIX implies a multisteps process that can be further improved.This manuscript shows, for the first time, the development of a straightforward one-pot protocol for ultrasmall silica nanoparticles (USNP) containing complexed or non-complexed chelators from molecular chelating silane precursors. In this new protocol, the size of particle and types of metals can be easily tuned. The chemical properties of USNP have been further clarified during this exploratory work. The produced particles have been characterized by different complimentary analytical techniques. These new nanoparticles USNPs show similar characteristics to AGuIX in terms of biological properties and biodistribution.Secondly, a new protocol of functionalization for USNP by chelating silane precursors has been developed. These functionalized free chelators on the particle can be used then to complex radiometals for bimodal imaging applications. Finally, other functionalization strategies have also been described. New probe (17VTh031) combining small cyclic chelator (NODA) and tumor targeting near-infrared fluorophore (IR783) as well as quaternary pyridinium have been grafted on AGuIX for creating new multimodal imaging probe and targeting chondrosarcoma tumors respectively
Travaillot, Thomas. "Caractérisation mécanique des matériaux élastiques à l'échelle locale par microscopie à pointe vibrante : Approche multimodale et mesure de champs." Thesis, Besançon, 2014. http://www.theses.fr/2014BESA2011/document.
Full textThis work proposes an improvement of the Scanning Microdeformation Microscope (SMM), a scanningprobe microscope, for the mechanical elastic characterization of materials at local scale. It demonstratesthat using n > 2 SMM resonance frequencies allows to decouple Young’s modulus andPoisson’s ratio values for an isotropic material.The mechanical description of the resonator has been enriched in order to allow for an accuratemodeling over a wide frequency range. Procedures have been developed to identify the modellingparameters and the elastic constants of the materials from n > 2 resonant frequencies. Finally, theseprocedures have been applied to the characterization of various materials at local scale in order tovalidate the method and to present possibilities and limits.To improve robustness and move towards the characterization of anisotropic materials, a polarizedlightimaging interferometer was developed to measure the rotation field of reflecting surfaces in aparticular direction. The sensitivity to the rotation originates from a homemade birefringent prism withuniaxial gradient of refractive index. This system is able to measure a localized rotation field as it isinduced in the vicinity of the tip of the SMM. Its interest is also demonstrated in cases in which scaleeffects make the rotation measurement preferable to the out-of-plane displacement measurement
Bergamaschi, Antoine. "Développements méthodologiques et logiciels pour l’imagerie X multimodale par balayage sur la ligne de lumière Nanoscopium." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS054/document.
Full textThe subject of this thesis is the methodological and software development of tools for processing very large multimodal and tomographic datasets produced on Nanoscopium beamline in the SOLEIL synchrotron. Scanning hard X-ray imaging allows simultaneous acquisition of multimodal information, i.e. of images in which each pixel contains several types of data. Combining these scanning techniques with the FLYSCAN infrastructure, developed for fast data acquisition at Synchrotron SOLEIL, permits to perform multimodal tomographic imaging and tomographic reconstruction during routine user experiments. A main challenge of such imaging techniques is the online processing of the important amount of generated multimodal data. The main outcome of this thesis work is the MMX-I software which is dedicated to processing large 2D/3D multimodal dataset. This software includes an original algorithm for continuous reading of large data volumes, several reduction functions, two phase reconstruction algorithms (integration in Fourier space and iterative technics) and tomographic reconstruction technics (filtered back projection and iterative technics). Every implemented method as well as application allowing to validate the new developments and few evolution perspectives are presented in this thesis manuscript
Desbrée, Aurélie. "Nouvelle approche multimodale et quantitative pour les études in vivo chez le petit animal : couplage de la β-MicroProbe aux techniques magnétiques et développement de fantômes de rat et de souris voxelisés." Paris 7, 2005. https://tel.archives-ouvertes.fr/tel-00115911.
Full textDesbrée, Aurélie. "Nouvelle approche multimodale et quantitative pour les études in vivo chez le petit animal : couplage de la $\beta$-MicroProbe aux techniques magnétiques etdéveloppement de fantômes de rat et de souris voxelisés." Phd thesis, Université Paris-Diderot - Paris VII, 2005. http://tel.archives-ouvertes.fr/tel-00115911.
Full textd'étudier ces modèles au cours du temps a stimulé le développement d'instruments dédiés aux études in vivo chez le petit animal. Pour aller plus loin dans la compréhension des mécanismes physiopathologiques, le grand défi actuel est de pouvoir coupler simultanément
plusieurs de ces méthodes. Dans ce cadre, la combinaison des techniques magnétiques et radioactives reste un challenge des plus intéressants mais aussi des plus délicats à réaliser techniquement. C'est pourquoi nous proposons de coupler les techniques magnétiques à la sonde radiosensible b-MicroProbe développée dans le groupe IPB et qui s'est révélée être une alternative aux mesures TEP. Dans ce contexte, le travail de thèse a consisté à étudier la faisabilité de ce couplage d'un point de vue physique, par simulation et par des caractérisations expérimentales. Puis, la mise en place d'un protocole biologique a été effectuée sur la base d'études pharmacocinétiques. Les expériences menées ont montré la possibilité d'utiliser la sonde pour des mesures radioactives sous champ magnétique intense
simultanément à l'acquisition d'images anatomiques. Parallèlement, nous avons cherché à améliorer la quantification du signal radioactif grâce à l'utilisation d'un fantôme voxelisé de cerveau de rat. Enfin, l'émergence des modèles transgéniques nous a conduit à reproduire des études pharmacocinétiques chez la souris et à développer des fantômes voxelisés de souris.
Bridot, Jean-Luc. "Nanohybrides à coeur d'Oxyde de gadolinium pour le développement de sondes IRM multimodales." Lyon 1, 2007. http://www.theses.fr/2007LYO10290.
Full textVorng, Jean-luc. "Synthèse de sondes moléculaires pour l'imagerie multimodale et multi-échelle appliquée en science du vivant." Thesis, Rennes 1, 2013. http://www.theses.fr/2013REN1S123/document.
Full textLife sciences imaging are widely used for different applications, they are interested in medical diagnosis as well as basic research. In cells biology, fluorescence microscopy is mainly used for organelles observation at sub-cellular scale. However, techniques based on fluorescence phenomena are limited by some drawbacks like technical resolution, fluorescent dye degradation and the number of channels, which can be visualized. In this context, the exploration and the development of new way for image acquisition are considered as an experimental and technical scientific challenge. Furthermore, it can lead to complementary technique to fluorescence microscopy.This PhD thesis is a life science imaging project development and application allowing image acquisition base on molecular vibrations phenomena and elementary analysis in cells. Two techniques have been chosen in relation to both specificity: micro Raman spectroscopy and NanoSIMS imaging. Micro Raman spectroscopy allows the observation of molecular vibration mode at micron scale and NanoSIMS leads to elementary and isotopic sample information at sub-micronic scale. Combination of both techniques will lead to multi-scale and multi-modal imaging of biological samples. Molecular probes designing and synthesis for both techniques were used to visualize an organelle inside the nucleus: the nucleolus. Nucleolus has a key role in ribosomal RNA transcription and researchers shows some interest in the study of this organelle for his multifunctional role like ribosome biogenesis and nuclear organization. An immuno-labelling method combine with the introduction of molecular probes will allow nucleolus imaging by micro-Raman spectroscopy and NanoSIMS spectrometry. This immuno-labelling is specific to a phosphoprotein mainly localized inside the nucleolus: the nucleophosmin (NPM). In this project, the introduction of molecular probes in an immuno-labelling will act as a Raman Tag or a NanoSIMS tag for NPM's nucleolus observation and studies.This work at the interface between different fields: chemistry, biology and physics shows all the aspect of this project starting from molecular probes synthesis, immuno-labelling methods uses to direct application of both Raman and NanoSIMS techniques
Bernhard, Yann. "Synthèse et étude de nouvelles sondes fluorescentes pour l'imagerie optique, l'imagerie Cherenkov et les imageries multimodales." Thesis, Dijon, 2015. http://www.theses.fr/2015DIJOS015/document.
Full textThe goal of this work was to prepare and study new fluorescent probes, which could give rise to novel optical or Cherenkov imaging agents. The first section of this work describes the synthesis of fluorescent subphthalocyanines and phthalocyanines probes, which possess relevant chemicals groups suitable for optical imaging applications. The optical and physico-chemical properties of the new probes were carefully examined to ensure they comply with the specification of the fluorophores for the desired application. The second part focused on the subsequent development of a few selected probes into real imaging agents. The biovectorisation of subphtalocyanines was achieved upon conjugation of a peptide either with the probe or with a liposome that encapsulate the probe. Phthalocyanine-based functional probes were engaged in the synthesis of nanohybrides made of iron oxide nanoparticles or titania nanotubes, to afford bimodal or theranostic agents. In a final part, the energy transfer phenomenon (CRET) between Cherenkov emitting radionuclides and organic fluorophores was studied. The optimal transfer parameters were considered to prepare a CRET probe made of a fluorescein moiety covalently attached to an Yttrium-90 complex. Finally, the ability to emit in the near infrared window was explored by multi-CRET-FRET transfer