Download or read book APPLICATION DES TECHNIQUES D IMAGERIE PAR RESONANCE MAGNETIQUE NUCLEAIRE A L ETUDE PRECLINIQUE DE L ISCHEMIE CEREBRALE FOCALE written by Danielle Ibarrola and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications des techniques de spectroscopie et d imagerie par resonance magnetique in vivo etude des effets metaboliques cerebraux induits au cours written by Emmanuelle Le Bars and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DEVELOPPEMENT D UNE METHODE DE RESONANCE MAGNETIQUE NUCLEAIRE BI DIMENSIONNELLE LOCALISEE DANS L ESPACE APPLICATION A L INVESTIGATION DU METABOLISME CEREBRAL CHEZ LE RAT EN SITUATION ISCHEMIQUE written by Florence Delmas and published by . This book was released on 2001 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA SPECTROSCOPIE DE RESONANCE MAGNETIQUE (SRM) LOCALISEE, APPLIQUEE A L'ETUDE DU CERVEAU, PERMET D'OBSERVER IN VIVO LES METABOLITES CEREBRAUX PRESENTS DANS UN VOLUME DE MESURE CHOISI. LA NOUVELLE METHODE DE SRM LOCALISEE PROPOSEE EST BASEE SUR UNE SEQUENCE DE SPECTROSCOPIE DE CORRELATION HOMONUCLEAIRE (SRM DU PROTON). CETTE SEQUENCE A DEUX DIMENSIONS DE FREQUENCE OFFRE UNE RESOLUTION SPECTRALE SUPERIEURE A CELLE OBTENUE AVEC DES SEQUENCES A UNE DIMENSION DE FREQUENCE DE TYPE PRESS OU STEAM ET PERMET D'OBSERVER UN NOMBRE IMPORTANT DE METABOLITES SANS CONTAMINATION SPECTRALE. LES MODELES EXPERIMENTAUX ETUDIES SONT DES MODELES D'ISCHEMIE CEREBRALE FOCALE CHEZ LE RAT ADULTE ET NOUVEAU-NE. L'OBSERVATION DES PERTURBATIONS METABOLIQUES INDUITES AU SEIN D'UN DES HEMISPHERES CEREBRAUX EST FAITE A L'AIDE D'UNE METHODE DE LOCALISATION DANS DEUX VOLUMES, BASEE SUR LA TECHNIQUE DE CODAGE D'HADAMARD. L'UN DES VOLUMES EST INCLUS DANS LA ZONE LESEE ET LE SECOND VOLUME, SITUE DANS L'HEMISPHERE SAIN, FOURNIT UNE MESURE CONTROLE. LES DEUX VOLUMES SONT DISPOSE DE FACON SYMETRIQUE PAR RAPPORT A LA LIGNE MEDIANE DU CERVEAU ET LES DEUX MESURES SONT SIMULTANEES. CETTE EXPERIENCE PERMET ENTRE AUTRES L'OBSERVATION DE L'AUGMENTATION DU NIVEAU DE LACTATE TISSULAIRE QUI MET EN EVIDENCE LE MECANISME DE GLYCOLYSE ANAEROBIE ET L'OBSERVATION DE LA BAISSE DU NIVEAU DE N-ACETYL ASPARTATE, SIGNE DE SOUFFRANCE NEURONALE. LES CHANGEMENTS IMPLIQUES DANS CETTE PATHOLOGIE SONT DE NATURE DYNAMIQUE. LA RESOLUTION TEMPORELLE DE L'EXPERIENCE DE SRM LOCALISEE DOIT DONC ETRE OPTIMISEE. CETTE OPTIMISATION EST REALISE A L'AIDE D'UNE ETUDE THEORIQUE DE L'EVOLUTION DES SYSTEMES DE SPINS DES MOLECULES AU COURS DE L'EXPERIENCE, BASEE SUR LE FORMALISME DES OPERATEURS PRODUITS.
Download or read book METHODES PHYSIQUES EN IMAGERIE DE RESONANCE MAGNETIQUE NUCLEAIRE written by PHILIPPE.. DEVOULON and published by . This book was released on 1994 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA PREMIERE PARTIE DE CE TRAVAIL EST CONSACRE A L'ETUDE DU PROFIL DE COUPE PRODUIT PAR UNE IMPULSION SELECTIVE EN PRESENCE D'UN GRADIENT DE B#0 EN RMN. LE PREMIER CHAPITRE CONSTITUE UNE REVUE SUR LES IMPULSIONS SELECTIVES. APRES L'EXPOSITION DE NOTIONS FONDAMENTALES, PROFIL FREQUENTIEL, SELECTIVITE ET EFFICACITE D'UNE IMPULSION, SONT PRESENTEES LES IMPULSIONS SELECTIVES LES PLUS UTILISEES EN IMAGERIE. LE SECOND CHAPITRE ANALYSE LES CARACTERISTIQUES ET LES PROCEDURES DE TEST D'UNE CHAINE D'EMISSION RADIOFREQUENCE POUR LA RMN. LA MODULATION DE PHASE ET D'AMPLITUDE ET LE MODULATEUR HAUTEMENT LINEAIRE CONSTRUIT AU LABORATOIRE SONT PLUS PARTICULIEREMENT DISCUTES. LE CHAPITRE TROIS CORRESPOND A L'ANALYSE METHODOLOGIQUE DE L'OBTENTION D'UN PROFIL DE COUPE COMPLEXES ET SOULIGNE LA NECESSITE D'ACQUERIR UN ECHO COMPLET NON TRONQUE ET DE CODER EN PHASE LA DIRECTION DE SELECTION DE TRANCHE. LES RESULTATS EXPERIMENTAUX DONNES PAR DIVERSES IMPULSIONS ILLUSTRENT CES METHODES D'IMAGERIE DE COUPE. LA SECONDE PARTIE EST L'ETUDE DE LA DIFFUSION EN RMN HAUTE RESOLUTION APPLIQUEE PARTICULIEREMENT A L'ETUDE DES SYSTEMES BIOLOGIQUES. LES TECHNIQUES DE PONDERATION DU SIGNAL PAR LA DIFFUSION EN GRADIENTS PULSES DE CHAMP B#0 MAIS AUSSI EN GRADIENT DE CHAMP RADIOFREQUENCE B#1 SON NOTAMMENT PRESENTES. NOUS DEVELOPPONS UNE SEQUENCE D'IMAGERIE DE DIFFUSION UTILISABLE EN MICROIMAGERIE ET PERMETTANT DE S'AFFRANCHIR DES EFFETS DES TERMES CROISES AVEC LES GRADIENTS DE CODAGE. CETTE SEQUENCE EST APPLIQUEE A L'ETUDE D'UN MODELE D'ISCHEMIE FOCALE DU CERVEAU DU RAT.
Download or read book APPLICATIONS DE LA RESONANCE MAGNETIQUE NUCLEAIRE A L ETUDE DU METABOLISME CEREBRAL IN VIVO written by SYLVIE.. BRULATOUT and published by . This book was released on 1995 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE COMPARATIVE DE DIFFERENTS MODELES EXPERIMENTAUX D'HYPOXIE ET D'ISCHEMIE CHEZ LE RAT PAR SPECTROSCOPIE RMN UNIDIMENSIONNELLE DU PROTON A HAUT CHAMP A PERMIS D'IDENTIFIER LES MODIFICATIONS SPECIFIQUES A CES DIFFERENTES SITUATIONS PHYSIOLOGIQUES PERMETTANT DE LES DISTINGUER. CES MODIFICATIONS DES RESONANCES PROTON SONT EN PARTICULIER LIEES AUX EFFETS PHYSIQUES DES CHANGEMENTS DU TAUX SANGUIN DE DEOXYHEMOGLOBINE ET DU DEBIT SANGUIN CEREBRAL AU COURS DE CES SITUATIONS. LA CARACTERISATION DE MODELES D'ISCHEMIE CEREBRALE REVERSIBLE ET D'EPILEPSIE PAR SPECTROSCOPIE RMN BIDIMENSIONNELLE PROTON A MONTRE QUE CETTE APPROCHE PERMETTAIT LE MONITORAGE DE MODIFICATIONS DU METABOLISME INTERMEDIAIRE DANS LES SITUATIONS PHYSIOPATHOLOGIQUES NOTAMMENT CONCERNANT LES ACIDES AMINES IMPLIQUES DANS LA NEUROTRANSMISSION (GLUTAMATE, ASPARTATE, GABA) AINSI QUE LA TAURINE IMPLIQUEE DANS LA REGULATION OSMOTIQUE DU TISSU CEREBRAL. LA MISE EN EVIDENCE DE VARIATIONS REVERSIBLES DES RESONANCES DU N-ACETYLASPARTATE COMPOSE ESSENTIELLEMENT NEURONAL OUVRE LA VOIE A UN SUIVI SPECIFIQUE DE CE TYPE DE CELLULES CEREBRALES
Download or read book ISCHEMIE CEREBRALE FOCALE AIGUE EXPERIMENTALE written by Isabelle Berry and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE DE LA VALEUR DIAGNOSTIQUE ET PRONOSTIQUE DU COUPLAGE IMAGERIE/SPECTROSCOPIE PAR RESONANCE MAGNETIQUE. CES DEUX TECHNIQUES PERMETTENT D'ETUDIER L'ASPECT METABOLIQUE ET L'ASPECT HEMODYNAMIQUE DE L'ISCHEMIE CEREBRALE
Download or read book Imagerie de r sonance magn tique written by Michel Décorps and published by EDP Sciences. This book was released on 2012-12-03T00:00:00+01:00 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'imagerie par résonance magnétique s'est développée de manière prodigieuse au cours des quarante dernières années et le champ d'application des méthodes mises en œuvre, mais aussi leur complexité, s'accroissent de manière continue. Ce livre scientifique a pour objectif de décrire de manière rigoureuse les différentes méthodes de production d'une image par résonance magnétique. Les différentes étapes de production d'une image sont présentées : excitation spatialement sélective, codage de l'espace, traitement des données. Les multiples séquences d'impulsions constituant la panoplie des utilisateurs de l'IRM sont décrites de manière détaillée, depuis les séquences de base de type écho de gradient ou écho de spin, jusqu'aux séquences rapides exploitant l'établissement d'un état stationnaire, et aux balayages écho-planar ou spirale. La description couvre des aspects plus complexes, comme les techniques d'excitation spatiale multi-dimensionnelle ou l'imagerie parallèle.
Download or read book Thickening Fat written by May Friedman and published by Routledge. This book was released on 2019-08-30 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thickening Fat: Fat Bodies, Intersectionality, and Social Justice seeks to explore the multiple, variable, and embodied experiences of fat oppression and fat activisms. Moving beyond an analysis of fat oppression as singular, this book will aim to unpack the volatility of fat—the mutability of fat embodiments as they correlate with other embodied subjectivities, and the threshold where fat begins to be reviled, celebrated, or amended. In addition, Thickening Fat explores the full range of intersectional and liminal analyses that push beyond the simple addition of two or more subjectivities, looking instead at the complex alchemy of layered and unstable markers of difference and privilege. Cognizant that the concept of intersectionality has been filled out in a plurality of ways, Thickening Fat poses critical questions around how to render analysis of fatness intersectional and to thicken up intersectionality, where intersectionality is attenuated to the shifting and composite and material dimensions to identity, rather than reduced to an “add difference and stir” approach. The chapters in this collection ask what happens when we operationalize intersectionality in fat scholarship and politics, and we position difference at the centre and start of inquiry.
Download or read book The Explicitation Interview written by Pierre Vermersch and published by Explicitation Interview. This book was released on 2007-07 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was first published in French in 1994. It has been a training support to numerous researchers as well as practitioners, such as teachers, health workers, personal or sport trainers. Since then, it has constantly been republished and a glossary has been added in 1998. This version is the first complete edition of the book in English. The main idea of this new interview technique is to help a teacher, a supervisor or a researcher to guide the student, the practitioner or the subject to give a fine retrospective description of an action. As it is only the subject that has access to this mental or physical action, the goal is to help the subject with the verbalization, putting the implicit knowledge of this action in words. Yet, to achieve this verbalization, we need guidance, because we don't know how to give such a description ourselves. If we leave the interviewee without guidance, he risks remaining in the implicit, speaking in a general way, or in an incomplete or imprecise way, commenting instead of describing. The explicit and precise description we aim is the opposite of the implicit, meaning a fine, detailed and complete way of putting the action in words. The final aim is to elucidate what the subject did to seek his goal
Download or read book Magnetic Nanoparticles in Human Health and Medicine written by Costica Caizer and published by John Wiley & Sons. This book was released on 2021-09-08 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Nanoparticles in Human Health and Medicine Explores the application of magnetic nanoparticles in drug delivery, magnetic resonance imaging, and alternative cancer therapy Magnetic Nanoparticles in Human Health and Medicine addresses recent progress in improving diagnosis by magnetic resonance imaging (MRI) and using non-invasive and non-toxic magnetic nanoparticles for targeted drug delivery and magnetic hyperthermia. Focusing on cancer diagnosis and alternative therapy, the book covers both fundamental principles and advanced theoretical and experimental research on the magnetic properties, biocompatibilization, biofunctionalization, and application of magnetic nanoparticles in nanobiotechnology and nanomedicine. Chapters written by a panel of international specialists in the field of magnetic nanoparticles and their applications in biomedicine cover magnetic hyperthermia (MHT), MRI contrast agents, biomedical imaging, modeling and simulation, nanobiotechnology, toxicity issues, and more. Readers are provided with accurate information on the use of magnetic nanoparticles in diagnosis, drug delivery, and alternative cancer therapeutics—featuring discussion of current problems, proposed solutions, and future research directions. Topics include current applications of magnetic iron oxide nanoparticles in nanomedicine and alternative cancer therapy: drug delivery, magnetic resonance imaging, superparamagnetic hyperthermia as alternative cancer therapy, magnetic hyperthermia in clinical trials, and simulating the physics of magnetic particle heating for cancer therapy. This comprehensive volume: Covers both general research on magnetic nanoparticles in medicine and specific applications in cancer therapeutics Discusses the use of magnetic nanoparticles in alternative cancer therapy by magnetic and superparamagnetic hyperthermia Explores targeted medication delivery using magnetic nanoparticles as a future replacement of conventional techniques Reviews the use of MRI with magnetic nanoparticles to increase the diagnostic accuracy of medical imaging Magnetic Nanoparticles in Human Health and Medicine is a valuable resource for researchers in the fields of nanomagnetism, magnetic nanoparticles, nanobiomaterials, nanobioengineering, biopharmaceuticals nanobiotechnologies, nanomedicine, and biopharmaceuticals, particularly those focused on alternative cancer diagnosis and therapeutics.
