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Literatura académica sobre el tema "Appareil d’imagerie médicale"
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Artículos de revistas sobre el tema "Appareil d’imagerie médicale"
Beau, Aurélien, Denis Bossard y Sarah Gebeile-Chauty. "Les appareils orthodontiques collés doivent-ils être déposés systématiquement avant un examen d’imagerie par résonance magnétique (IRM) ?" L'Orthodontie Française 88, n.º 2 (junio de 2017): 131–38. http://dx.doi.org/10.1051/orthodfr/2017004.
Texto completoAdmin, Admin, YEKPE AHOUANSOU Patricia, ADJADOHOUN Sonia, LEGONOU Christelle, ADJOVI Boris, NGAMO Gabriel, SAVI de TOVE Kofi-Mensa, BIAOU Olivier y BOCO Vicentia. "État des lieux de la radioprotection du personnel de services d’imagerie médicale du sud Benin en 2019". Journal Africain d'Imagerie Médicale (J Afr Imag Méd). Journal Officiel de la Société de Radiologie d’Afrique Noire Francophone (SRANF). 12, n.º 4 (17 de junio de 2021). http://dx.doi.org/10.55715/jaim.v12i4.165.
Texto completoAdmin, Admin, SAVI de TOVE Kofi-Mensa, FACHINAN Herbert, GOUNONGBE Fabien, AKANNI Djivèdé, ADJOVI Boris Gil-Christ, KIKI Miralda, YEKPE AHOUANSOU Patricia, BIAOU Olivier y BOCO Vicentia. "Radioprotection en imagerie médicale dans les hôpitaux du nord Bénin." Journal Africain d'Imagerie Médicale (J Afr Imag Méd). Journal Officiel de la Société de Radiologie d’Afrique Noire Francophone (SRANF). 12, n.º 3 (27 de diciembre de 2020). http://dx.doi.org/10.55715/jaim.v12i3.112.
Texto completoTesis sobre el tema "Appareil d’imagerie médicale"
Darnet, Matthieu. "Robustesse d’une loi de commande d’un redresseur triphasé pour l’alimentation électrique d’un appareil d’imagerie médicale de forte puissance impulsionnelle". Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG009.
Texto completoThe design of a robust and efficient three-phase rectifier is a key issue in the power supplies of future medical imaging system such as X-ray scanners to increase their power and speed.This application imposes a large variability of operating points on the rectifier:(i) At the output, the load is of the pulse type with power variations of more than 100 kW.(ii) At the input, the nominal input voltage and input grid impedance are variable from one installation to another. And the instant input voltage varies normally on a +/-10% range, and abnormally from 0 to 500% of the nominal value.The double Vienna topology with coupled inductors and interleaved controls is chosen for its efficiency, reliability and low volume.The chosen control law consists of three control loops: (i) regulation of the total output voltage, (ii) power factor correction of the input currents, (iii) balancing of the two output voltages.A strong constraint is the changing dynamics of the input currents which pass through different conduction modes over the same grid period.Two linear models of the currents are developed:the linearised averaged model for the continuous conduction modes, and an original model developed in this thesis for the discontinuous conduction modes.The performance of the regulation is verified in simulation and experimentally.The robustness of the control is assessed by analysing the frequency responses and the single-variable and multivariable stability margins of the linear models developed in this thesis.The robustness of the global regulation to the phenomena defined by the ITIC curve of grid overvoltage and voltage drop is confirmed in simulation
Houriez--Gombaud-Saintonge, Sophia. "Analyse automatisée des données 3D+t d’imagerie par résonance magnétique de vélocimétrie. Quantification de l’apport du 3D+t". Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS328.
Texto completoCardiovascular diseases remain the leading cause of death in OECD countries, in particular, because of the population aging, making it one of the major health issues on a global scale. Advances in imaging today make it possible to better understand and diagnose these diseases in a non-invasive way. More recently, a new non-invasive and non-radiative imaging technique named « 4D Flow MRI » allows for the first time to image the speed of blood flow in three dimensions during a whole cardiac cycle, thus offering new perspectives of visualization, understanding, and measurement. This thesis in image processing carried out in connection with cardiologists and radiologists aims to develop new indicators and to quantify the contribution of 4D flow MRI especially in 1) the assessment of the aortic stiffness leading to a comparison between several approaches to estimate the pulse wave velocity 2) the analysis of flow disorganization in aging and pathological dilation 3) the evaluation of filling flow in the left ventricle