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Статті в журналах з теми "Facteur d’ouverture du collimateur":
Besbes, M., L. Ben Salem, A. Assadok, I. Saidani, M. Mahdouani, and F. Benna. "Détermination expérimentale du facteur d’ouverture du collimateur des mini faisceaux utilisés en radiothérapie stéréotaxique." Cancer/Radiothérapie 20, no. 6-7 (October 2016): 746. http://dx.doi.org/10.1016/j.canrad.2016.08.088.
Pinard, Florent, Sandrine Vanneste, Badiâa Bouazzaoui, Séverine Fay, Michel Isingrini, Lucie Angel, Erika Borella, and Laurence Taconnat. "Personality and organizational strategies in episodic memory: The role of Openness to experience on recall and subjective organization in young and older adults." L’Année psychologique Vol. 123, no. 3 (September 27, 2023): 513–37. http://dx.doi.org/10.3917/anpsy1.233.0513.
Khrouz, Driss. "Les politiques éducatives et linguistiques au Maroc." Administration & Éducation N° 181, no. 1 (March 13, 2024): 33–39. http://dx.doi.org/10.3917/admed.181.0033.
Requier-Desjardins, Denis. "Les systèmes agroalimentaires localisés en Amérique latine : un facteur de compétitivité de l’agro-industrie rurale sur des marchés globalisés ?" Économies et Sociétés. Systèmes agroalimentaires 36, no. 925 (2002): 1421–40. http://dx.doi.org/10.3406/esag.2002.1751.
Hau, Michel. "Pourquoi l’Allemagne a-t-elle moins souffert de la désindustrialisation ?" Cinquante ans de désindustrialisation, no. 1 (July 25, 2022): 13–17. http://dx.doi.org/10.57086/rrs.76.
Guesmi, Khaled, and Duc Khuong Nguyen. "L’intégration financière des marchés d’actions émergents : une analyse au niveau régional." Économie appliquée 64, no. 2 (2011): 143–80. http://dx.doi.org/10.3406/ecoap.2011.3570.
Besbes, M., L. Ben Salem, A. Assadok, I. Saidani, M. Mahdouani, H. Mahjoubi, and F. Benna. "Détermination du facteur de diffusion du collimateur pour des faisceaux d’irradiation de petite dimension : étude comparative de différents types de mini-fantômes." Cancer/Radiothérapie 20, no. 6-7 (October 2016): 746. http://dx.doi.org/10.1016/j.canrad.2016.08.089.
Major, René. "Derrida, lecteur de Freud et de Lacan." Études françaises 38, no. 1-2 (August 18, 2004): 165–78. http://dx.doi.org/10.7202/008398ar.
Mwanza Kakengu, François, and Constant Mbamba Balthasar. "FACTEURS MOTIVATIONNELS D’ADDICTION AUX SUBSTANCES PSYCHOACTIVES CHEZ LES JEUNES DE LA COMMUNE DE KIMBASEKE A KINSHASA, DEMOCRATIC REPUBLIC OF THE CONGO / MOTIVATIONAL FACTORS FOR ADDICTION TO PSYCHOACTIVE SUBSTANCES IN YOUNG PEOPLE FROM THE COMMUNE OF KIMBASEKE TO KINSHASA, DEMOCRATIC REPUBLIC OF THE CONGO." European Journal of Public Health Studies 6, no. 1 (February 22, 2023). http://dx.doi.org/10.46827/ejphs.v6i1.142.
Administrateur- JAIM, MOUSSA ISSOUFOU Djibrillou, SEYDOU SADOU M. Hanatou, DAOU Mamane, SOLI Adamou Idrissa, MALAM ABARI Moustapha, ARZIKA Magagi, ISSA ADO Aichatou, and ADA ALI. "Dépistage de l’ischémie myocardique silencieuse par la scintigraphie myocardique au Tc99m-Sestamibi chez les patients diabétiques asymptomatiques." Journal Africain d'Imagerie Médicale (J Afr Imag Méd). Journal Officiel de la Société de Radiologie d’Afrique Noire Francophone (SRANF). 14, no. 1 (July 10, 2022). http://dx.doi.org/10.55715/jaim.v14i1.337.
Дисертації з теми "Facteur d’ouverture du collimateur":
Ermeneux, Louis. "Dosimétrie des systèmes IRM-LINAC utilisés en radiothérapie externe : caractérisation des faisceaux et évaluation des distributions de dose." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP005.
MR-LINAC are radiotherapy devices that combine a linear accelerator (LINAC) and a magnetic resonance imager (MRI), allowing an improved tumor tracking. Dosimetric issues associated with the presence of the static magnetic field have been discussed in the literature. The aim of this thesis is to develop dosimetric tools and robust protocols for use on MRI-LINACs to enhance the knowledge of the doses delivered to patients treated with these devices. The first part of the work focuses on determining output factors (OF) in small fields on this device and studying detectors' responses. No significant variation in response was observed for EBT3 films exposed to different durations in the presence of the magnetic field (0.35 T). This high-resolution 2D detector was then used to perform several series of OF measurements on an MRidian MR-LINAC, which were then compared with measurements using active detectors (ionization chambers, diodes, microdiamond) as well as with data from the treatment planning system (TPS). A good agreement was observed between the measured OF and those calculated by the TPS for field sizes larger than or equal to 2.5x2.5 cm²; an underestimation of the TPS OF was observed for smaller field sizes (0.83x0.83 cm²: 6% for films and f 4% on average for solid active detectors). After applying TRS483 correction factors, measurements with active detectors converge with those obtained with films. These discrepancies with the TPS suggest the need for a more robust adjustment of the TPS algorithm for small fields. Measurements were complemented by Monte Carlo simulations using the Geant4 code to establish correction factors in the presence of a magnetic field for active detectors. The second part focuses on the feasibility of MRI reading of TruView dosimetric gels (ModusQA) manufactured in the laboratory to evaluate dose distributions. These gels, characterized by MRI reading (measuring T2 relaxation time), exhibited a dose-response linearity up to 7 Gy, along with relatively low sensitivity compared to the literature. Significant thermal sensitivity and gel inhomogeneity between the gel surface and deeper layers were observed in non-irradiated gels, and protocols were implemented to address these issues. The feasibility of using dosimetric gels for patient quality control in MR-Linac has been demonstrated, but an enhancement of gel sensitivity is required to achieve reliable dosimetry with this protocol
Marsolat, Fanny. "Développement d'un dosimètre diamant pour une mesure de la dose absorbée dans les mini-faisceaux utilisés en radiothérapie stéréotaxique." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-00957871.