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Rozprawy doktorskie na temat "Ondes électromagnétiques – Emploi en thérapeutique"
Billoué, Jérôme. "Etude d'un système électromagnétique de localisation et de suivi d'objets magnétiques dans un volume opaque : application à la médecine chirurgicale". Tours, 2007. http://www.theses.fr/2007TOUR4050.
Pełny tekst źródłaThis work began with a literature review of tracking systems used in the medical field. At the end of this review, we made a study on the influence of electromagnetic waves on biological structures. With the analysis of different positioning techniques using the microwave, we developed a new method of locating, based on the phased array. With simulation results of two phased arrays, we were able to demonstrate that it's possible to create broadband phased circuits, based on the digital modulations phase. We also showed a solution based on the direct digital synthesis, making it possible to considerably increase the accuracy of phase gradient necessary for the command of phased array. Finally, we have made the latter solution based on direct digital synthesis
Taibi, Abdelkader. "Effets thérapeutiques des champs électriques pulsés nanosecondes sur modèle murin de métastates péritonéales coliques". Thesis, Limoges, 2020. http://aurore.unilim.fr/theses/nxfile/default/2232333c-2e64-48e6-afd5-7ffa295ccf6f/blobholder:0/2020LIMO0031.pdf.
Pełny tekst źródłaThe aim of this study was to evaluate the sensitivity of murine colorectal cancer (CRC) CT-26 cells to 10 ns pulses, at high frequency and high intensity (nsPEF). We have developed a mouse model of colorectal peritoneal metastasis (PMc) and the histological response was then assessed according to a new classification (Peritoneal Regression Grading Score). Fibrosis was analyzed by multiphoton microscopy, proliferation (KI67, DAPI) and expression of immunological factors (CD3, CD4, CD8) by classical histology. We have demonstrated that nsPEFs display a dose-response effect on CT-26 cells by inducing cell death and plasma membrane permeabilization, as well as altering mitochondria morphology. In addition, a specific immune response (CD8+ T lymphocytes) and a major histological response have confirmed the potentiality of nsPEFs as an anti-tumor therapeutic alternative. We still need to evaluate the innocuity of nsPEFs on healthy peritoneum and the ergonomics of the application system are challenging to be improved
Momméja, Emmanuelle. "Utilisation thérapeutique des ondes électromagnétiques dans les douleurs pelviennes chroniques". Montpellier 1, 1992. http://www.theses.fr/1992MON11182.
Pełny tekst źródłaPrat, Frédéric. "Effets tissulaires et cellulaires de la cavitation induite par les ondes de choc et recherche d'applications en cancérologie digestive". Lyon 1, 1993. http://www.theses.fr/1993LYO1T267.
Pełny tekst źródłaRobert, Jade. "Développement de modalités d'imagerie ultrasonore pour le guidage et le suivi interventionnel du traitement des arythmies cardiaques". Electronic Thesis or Diss., Lyon, 2022. http://www.theses.fr/2022LYSE1005.
Pełny tekst źródłaCardiac arrhythmias remain a major public health issue today. Some types of arrhythmias affect tens of millions of people worldwide, while others are the main cause of sudden cardiac death. In the most severe cases, it is imperative perform a treatment in order to preserve the integrity of the patient. However, interventional methods for guiding and monitoring this treatment are limited, sometimes leading to high recurrence rates, depending on the type of arrhythmia. This thesis focuses on the development of ultrafast ultrasound imaging modalities that can overcome these limitations. These modalities are Electromechanical Wave Imaging and Passive Elastography, and could provide relevant information, until now unavailable in clinic. First, ex-vivo studies on isolated working hearts were conducted to evaluate the potential of Electromechanical Wave Imaging. A blind study demonstrated that it was possible to accurately detect the type of stimulation and the source of contraction in 79% of cases. Then, two in-vivo studies, conducted on porcine model, allowed to study the feasibility of the electromechanical wave imaging on two types of probes, more adapted to an interventional context. Waves that could be associated with cardiac contraction were visualized in both studies. Nevertheless, dynamic visualization of the contraction wave was more complex in an in-vivo context, as it requires subjective interpretation of a trained reader. To address this limitation, a novel method based on time-frequency analysis of ultrasound data was developed to provide a more objective representation of the cardiac contraction, without the need of a trained reader. The method was validated, qualitatively and quantitatively, on ex-vivo data, against the reference method used for Electromechanical Wave Imaging in the literature. By applying the method to the data from the in-vivo studies, it could be demonstrated that the described contraction patterns are similar between two consecutive stimulations with same conditions, and that the contraction source is correctly positioned when the stimulation probe is located in the plane. Notably, the observed contraction area was consistent with the pacing area, when located in the imaging plane, in 81% of the cases, during the study performed with an intracardiac probe. Ex-vivo studies on cardiac samples were performed to evaluate the feasibility of detecting single lesions and thermal injury patterns by Passive Elastography. It was demonstrated on a large number of samples (41 out of n = 51, 80% on two studies) that a local stiffness increase (by a factor of 1.6 to 2.5 on average), of the injured areas, was visible by elastography. The distributions of the detected lesions were consistent, and the dimensions correctly estimated (manually, 1.1 to 2.8 mm error on average), although the lesion areas detected by passive elastography were still approximate. Finally, an in-vivo study on a porcine model demonstrated the feasibility of detecting individual or in-line thermal lesions with this method
Mahrour, Lilia Nawel. "L' endocytose : une fonction cellulaire qui est stimulée par les champs électromagnétiques et qui joue un rôle dans l'internalisation de la bléomycine". Paris 5, 2002. http://www.theses.fr/2002PA05S004.
Pełny tekst źródłaAntunes, Neves Ana Luisa. "Application au domaine biomédical des moyens de caractérisation électromagnétique de matériaux dans le spectre des micro-ondes". Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0320/document.
Pełny tekst źródłaThe penetration capacity of the electromagnetic (EM) waves in matter or biological tissues allows exploring media non-destructively. Concerning the public health sector, improving the quality of life has become one of the greatest concerns of nowadays society. EM wave research on different media and biological tissues shows a great potential for diagnostic applications and eventually for therapeutically applications. In this doctoral thesis, we focus on the vast domain of the biomedical applications of wave-matter interactions, based on the knowledge of the electromagnetic properties of matter, the complex permittivity and the conductivity. On a first instance, we address the emerging domain of ultra-high field MRI (Magnetic Resonance Imaging), which nowadays puts effort into the clinical implementation of 7T devices. Firstly our purpose is to produce an anthropomorphic head model, composed of the brain’s different layers, and taking into account the electromagnetic properties and the proton relaxation times inherent to each tissue. These realistic head models allow to evaluate the newly developed protocols for these ultra-high field devices. Secondly, we have studied and developed field homogenization devices, which allow brightening the shadow areas displayed in some MRI images, such as the cerebellum and the temporal lobes in brain imaging at 7T. This procedure, named Passive Shimming, is based on the use of high permittivity dielectric pads composed of Barium Titanate, which focalize the field to the areas where normally the wavelength in insufficient to generate a homogeneous signal distribution
Jaïss, Pierre. "Traitement par radiofréquence des tachycardies par réentrée intra-nodale : facteurs prédictifs de succés au site d'ablation : étude prospective à propos de 35 cas". Bordeaux 2, 1993. http://www.theses.fr/1993BOR23112.
Pełny tekst źródłaPerami, Jean-Marc. "Electrogrammes prédictifs du succés dans l'ablation par radio-fréquence des faisceaux accessoires". Bordeaux 2, 1993. http://www.theses.fr/1993BOR23114.
Pełny tekst źródłaRobert, Frédéric. "Ablation de la conduction auriculo-ventriculaire par radiofréquence pour le traitement de l'arythmie supra-ventriculaire : résultats et devenir". Bordeaux 2, 1995. http://www.theses.fr/1995BOR23097.
Pełny tekst źródłaKsiążki na temat "Ondes électromagnétiques – Emploi en thérapeutique"
Pulsed Electromagnetic Fields for Clinical Applications. Taylor & Francis Group, 2020.
Znajdź pełny tekst źródłaMarkov, Marko, i James Ryaby. Pulsed Electromagnetic Fields for Clinical Applications. Taylor & Francis Group, 2020.
Znajdź pełny tekst źródłaMarkov, Marko, James Ryaby i Eric I. Waldorff. Pulsed Electromagnetic Fields for Clinical Applications. Taylor & Francis Group, 2020.
Znajdź pełny tekst źródłaMarkov, Marko, i James Ryaby. Pulsed Electromagnetic Fields for Clinical Applications. Taylor & Francis Group, 2020.
Znajdź pełny tekst źródłaBioeffects and Therapeutic Applications of Electromagnetic Energy. CRC, 2007.
Znajdź pełny tekst źródłaHabash, Riadh. Bioeffects and Therapeutic Applications of Electromagnetic Energy. Taylor & Francis Group, 2007.
Znajdź pełny tekst źródłaHabash, Riadh. Bioeffects and Therapeutic Applications of Electromagnetic Energy. Taylor & Francis Group, 2019.
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