Download or read book Reconstruction optique de tomographies written by Marielle Defontaine-Caritu and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamentals of Computerized Tomography written by Gabor T. Herman and published by Springer. This book was released on 2012-03-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised and updated second edition – now with two new chapters - is the only book to give a comprehensive overview of computer algorithms for image reconstruction. It covers the fundamentals of computerized tomography, including all the computational and mathematical procedures underlying data collection, image reconstruction and image display. Among the new topics covered are: spiral CT, fully 3D positron emission tomography, the linogram mode of backprojection, and state of the art 3D imaging results. It also includes two new chapters on comparative statistical evaluation of the 2D reconstruction algorithms and alternative approaches to image reconstruction.

Download or read book Tomographie ultrasonore en reflexion written by Serge Mensah and published by . This book was released on 1990 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE PROBLEME TRAITE EST CELUI DE LA TOMOGRAPHIE ULTRASONORE APPLIQUEE AU GENIE BIOMEDICAL. CE TRAVAIL S'INSCRIT DANS UN PROGRAMME PLUS VASTE DEVANT, A TERME, PERMETTRE L'ESTIMATION QUANTITATIVE DES PARAMETRES MECANIQUES DU MILIEU ANALYSE, ET PLUS PARTICULIEREMENT EN CE QUI NOUS CONCERNE, L'EVALUATION DE L'IMPEDANCE ACOUSTIQUE. PROCEDANT PAR ETAPES, CETTE ETUDE SE LIMITE A LA TOMOGRAPHIE DE REFLECTIVITE HAUTE RESOLUTION A FOND CONSTANT. NOUS ENVISAGEONS DANS UN PREMIER TEMPS L'ASPECT PHYSIQUE DU PROBLEME, ET DECRIVONS L'INTERACTION ENTRE L'ONDE ULTRASONORE ET LE MILIEU BIOLOGIQUE ASSIMILE A UN FLUIDE PARFAIT HETEROGENE. PAR UNE MODELISATION DE LA PROPAGATION, IL EST POSSIBLE DE RESOUDRE LE PROBLEME INVERSE EN REMARQUANT QUE SEULES LES FLUCTUATIONS D'IMPEDANCE CONDITIONNENT LES MESURES EN RETRODIFFUSION. UTILISANT LA TECHNIQUE DE RETROPROJECTION DES PROJECTIONS FILTREES, ON MONTRE QU'ON PEUT RECONSTRUIRE LA CARTOGRAPHIE DE L'IMPEDANCE ACOUSTIQUE. CETTE TECHNIQUE A ETE OPTIMISEE SUR LA BASE DE CONSIDERATIONS GEOMETRIQUES ELEMENTAIRES; NOUS REALISONS UN FILTRAGE SPATIAL QUI ATTENUE FORTEMENT LE BRUIT DE RECONSTRUCTION ET ACCROIT LA RESOLUTION. NOUS ENVISAGEONS ALORS, DIFFERENTS TYPES DE BALAYAGES, ET NOUS MONTRONS QU'UN BALAYAGE MIXTE (ANGULAIRE ET LINEAIRE) EST ADAPTE A CHAQUE PIXEL RECONSTRUIT. LA RESOLUTION OBTENUE EST FONCTION DE LA QUALITE DE LA MESURE DES PROJECTIONS. CETTE DERNIERE EST CONDITIONNEE PAR LA SENSIBILITE DE LA CHAINE D'ACQUISITION (BANDE LIMITEE). IL EST POSSIBLE DE PASSER CETTE LIMITE EXPERIMENTALE EN EFFECTUANT UNE DECONVOLUTION DES SIGNAUX. NOUS CONCLUONS PAR UNE EXPERIMENTATION REALISANT LA COUPE SAGITTALE D'UN IL DE MOUTON EXCISE, A L'AIDE DU BANC DE TOMOGRAPHIE CONCU AU SEIN DU LABORATOIRE

Download or read book TOMOGRAPHIE ULTRASONORE PAR DIFFRACTION written by DJILALI.. KOURTICHE and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE THEORIQUE ET LA REALISATION D'UN SYSTEME D'IMAGERIE PAR TOMOGRAPHIE ULTRASONORE UTILISANT LA METHODE DE DIFFRACTION CONSTITUENT LES OBJECTIFS DE CETTE THESE. APRES UNE ETUDE (BIBLIOGRAPHIQUE ET THEORIQUE) DES METHODES CLASSIQUES DE RECONSTRUCTION D'IMAGES ET DE LEURS LIMITES D'EMPLOI DANS LE DOMAINE DES ULTRASONS (HYPOTHESE DE PROPAGATION RECTILIGNE), ON PRESENTE L'ALGORITHME DE RECONSTRUCTION BASE SUR LA DIFFRACTION DE FOURIER. CETTE METHODE D'INVERSION PERMET DE RECONSTRUIRE LA FONCTION DE L'OBJET A PARTIR DES MESURES DU CHAMP DIFFRACTE. ELLE EST APPLICABLE A DES OBJETS FAIBLEMENT INHOMOGENES. L'EMPLOI DES APPROXIMATIONS DE BORN ET DE RYTOV PERMET DE TROUVER UNE SOLUTION A L'EQUATION D'ONDE (EQUATION D'HELMHOLTZ) DANS UN MILIEU INHOMOGENE. CET ALGORITHME A ETE TESTE SUR DES DONNEES DE SIMULATION. POUR VALIDER CES RESULTATS SUR DES DONNEES EXPERIMENTALES, NOUS AVONS REALISE UN SYSTEME D'ACQUISITION DU CHAMP DIFFRACTE PAR L'OBJET A IMAGER. LES RESULTATS OBTENUS MONTRENT LES POSSIBILITES QUANTITATIVES DE LA METHODE DE RECONSTRUCTION (DEDUCTION DE L'INDICE DE REFRACTION DU MILIEU, DE L'ATTENUATION ET DE LA VITESSE). LA LOI DE DEPENDANCE INDICE DE REFRACTION-TEMPERATURE ETANT MISE EN EVIDENCE EXPERIMENTALEMENT POUR UN MILIEU DONNE, RECONSTRUIRE UNE CARTE D'INDICE DE REFRACTION DANS LE MILIEU EST UN MOYEN DE REMONTER A L'INFORMATION DE TEMPERATURE. LES ESSAIS EN THERMOGRAPHIE NON-INVASIVE PAR LE BIAIS D'UNE TOMOGRAPHIE ULTRASONORE PAR DIFFRACTION CONSTITUENT L'ASPECT APPLICATIF DE CETTE ETUDE

Download or read book Biomedical Images and Computers written by J. Sklansky and published by Springer. This book was released on 2014-03-12 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technology of automatic pattern recognition and digital image processing, after over two decades of basic research, is now appearing in important applications in biology and medicine as weIl as industrial, military and aerospace systems. In response to a suggestion from Mr. Norman Caplan, ·the Program Director for Automation, Bioengineering and Sensing at the United States National Science Foundation, the authors of this book organized the first Uni ted States-France Seminar on Biomedical Image Processing. The seminar met at the Hotel Beau Site, St. Pierre de Chartreuse, France on May 27-31, 1980. This book contains most of the papers presented at this seminar, as weIl as two papers (by Bisconte et al. and by Ploem ~ al.) discussed at the seminar but not appearing on the program. We view the subject matter of this seminar as a confluence amon~ three broad scientific and engineering disciplines: 1) biology and medicine, 2) imaging and optics, and 3) computer science and computer engineering. The seminar had three objectives: 1) to discuss the state of the art of biomedical image processing with emphasis on four themes: microscopic image analysis, radiological image analysis, tomography, and image processing technology; 2) to place values on directions for future research so as to give guidance to agencies supporting such research; and 3) to explore and encourage various areas of cooperative research between French and Uni ted States scientists within the field of Biomedical Image Processing.

Download or read book Medical Image Analysis written by Atam P. Dhawan and published by John Wiley & Sons. This book was released on 2011-03-29 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The expanded and revised edition will split Chapter 4 to include more details and examples in FMRI, DTI, and DWI for MR image modalities. The book will also expand ultrasound imaging to 3-D dynamic contrast ultrasound imaging in a separate chapter. A new chapter on Optical Imaging Modalities elaborating microscopy, confocal microscopy, endoscopy, optical coherent tomography, fluorescence and molecular imaging will be added. Another new chapter on Simultaneous Multi-Modality Medical Imaging including CT-SPECT and CT-PET will also be added. In the image analysis part, chapters on image reconstructions and visualizations will be significantly enhanced to include, respectively, 3-D fast statistical estimation based reconstruction methods, and 3-D image fusion and visualization overlaying multi-modality imaging and information. A new chapter on Computer-Aided Diagnosis and image guided surgery, and surgical and therapeutic intervention will also be added. A companion site containing power point slides, author biography, corrections to the first edition and images from the text can be found here: ftp://ftp.wiley.com/public/sci_tech_med/medical_image/ Send an email to: [email protected] to obtain a solutions manual. Please include your affiliation in your email.

Download or read book Eyelid and Conjunctival Tumors written by Mathilde Kaspi and published by Springer Nature. This book was released on 2020-03-28 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Atlas gives the complete expert opinion on the diagnostic features of eyelid and conjunctival tumors (benign and malignant): a state-of-the-art guide with numerous images, useful for both dermatologists and ophthalmologists. This invaluable resource, illustrating clinical, histological and re fectance confocal microscopy features, first addresses the normal conditions of the ocular surface, then reviews lesions due to epidermal, melanocytic and adnexal tumors. A final part is devoted to conjunctiva conditions, from normal to malignant conjunctival tumors. The high number of illustrations and their description of many ocular surface lesions with in vivo confocal microscopy make this atlas an essential guide for the practitioners of both specialities.

Download or read book Ventricular Wall Motion written by Ulrich Sigwart and published by Thieme-Stratton Corporation. This book was released on 1984 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Cardiac Deformations from MRI Physical and Mathematical Models written by A.A. Amini and published by Springer Science & Business Media. This book was released on 2001-12-31 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement of Cardiac Deformations from MRI: Physical and Mathematical Models describes the latest imaging and imag analysis techniques that have been developed at leading centers for the visualization, analysis, and understanding of normal and abnormal cardiac motion with magnetic resonance imaging (MRI). The use of MRI in measuring cardiac motion is particularly important because MRI is non-invasive, and it is the only modality capable of imaging detailed intramural motion within the myocardium. Biomedical engineers, medical physicists, computer scientists, and physicians interested in learning about the latest advances in cardiovascular MRI should find this book to be a valuable educational resource. In particular, it is more tutorial in nature than most of the technical papers where the research was originally published. Practitioners and researchers working in the field of cardiovascular MRI will find the book to be filled with practical technical details and references to other work, enabling the implementation of existing methods and serving as a basis for further research in the area.

Download or read book Understanding Cardiac Imaging Techniques written by Paolo Marzullo and published by . This book was released on 2001 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: