ADJUSTMENT AND INTEGRATION IN CLINIC OF A SOFTWARE THAT COMPUTES THE ELECTRIC FIELD AND THE TEMPERATURE DISTRIBUTION OF EXTERNAL ELECTROMAGNETIC APPLICATORS PDF Download
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Author: Claudine Niederst
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
LES BESOINS D'UN PROGRAMME DE PLANIFICATION DE TRAITEMENT EN HYPERTHERMIE SE FONT DE PLUS EN PLUS RESSENTIR EN RAISON DES DIFFICULTES A SUIVRE EN TEMPS REEL L'EVOLUTION DE LA TEMPERATURE DANS L'INTEGRALITE DU VOLUME CHAUFFE ET DE L'APPARITION DE SYSTEME DE CHAUFFE DE PLUS EN PLUS COMPLEXES A CONTROLER. DANS LE BUT DE PREVOIR LES NIVEAUX THERMIQUES SUSCEPTIBLES D'ETRE ATTEINTS EN CLINIQUE, UN PROGRAMME, EN TROIS DIMENSIONS, INTEGRANT LES DONNEES PATIENT ET MACHINE A ETE MIS AU POINT EN CONSIDERANT LES TROIS ETAPES SUIVANTES: 1. LE CALCUL DE LA REPARTITION DU DEPOT D'ENERGIE DANS LES TISSUS, OBTENUE A PARTIR DES EQUATIONS DE MAXWELL, RESOLUES PAR LA METHODE DES EQUATIONS INTEGRALES ASSOCIEE A UNE PROCEDURE ITERATIF. 2. LE CALCUL DE LA DISTRIBUTION DE LA TEMPERATURE A PARTIR DE L'EQUATION BIOTHERMIQUE, RESOLUE PAR LA METHODE DES DIFFERENCES FINIES SELON LE SCHEMA DE DUFORT ET FRANKEL. 3. L'OPTIMISATION D'UN PLAN DE TRAITEMENT PAR EVALUATION DE L'AMPLITUDE ET DE LA PHASE OPTIMALE DES SOURCES RADIOFREQUENCES CONSTITUANT LE SYSTEME DE CHAUFFE ET CE A PARTIR D'UNE METHODE DU GRADIENT. LA CAPACITE DE CE PROGRAMME A REPRODUIRE LES DISTRIBUTIONS MESUREES DU DEPOT D'ENERGIE GENEREES PAR DES APPLICATEURS MICRO-ONDES A ETE TESTE SUR FANTOME EQUIVALENT MUSCLE. GLOBALEMENT DES RAPPORTS DE 52 A 72% ENTRE LA TAILLE DU CHAMP EFFECTIF ET LA PROFONDEUR DE PENETRATION NUMERIQUES ET EXPERIMENTALES ONT ETE OBSERVES. DE LA MEME MANIERE, LE PROGRAMME THERMIQUE A ETE TESTE A LA FOIS SUR FANTOME EQUIVALENT MUSCLE ET SUR UN CAS CLINIQUE. LES CONDITIONS OPTIMALES D'UTILISATION DE L'ALGORITHME EN TERME D'INCREMENT EN TEMPS ET DE CRITERE D'ARRET ONT ETE ETABLIES. L'ALGORITHME, BASE SUR LE SCHEMA DE DUFORT ET FRANKEL, A L'AVANTAGE D'ETRE STABLE QUEL QUE SOIT LE PAS EN TEMPS, CONTRAIREMENT AUX AUTRES SCHEMAS EXPLICITES USUELS CONDITIONNES EUX PAR LE CRITERE DE FOURIER. UNE ETUDE A MONTRE QU'UN PAS EN TEMPS, ENVIRON TRENTE FOIS SUPERIEUR A CELUI IMPOSE PAR LE CRITERE DE FOURIER, FOURNISSAIT LE MEILLEUR COMPROMIS ENTRE LA PRECISION ET LA VITESSE DE CONVERGENCE DES CALCULS. ENFIN UNE PROCEDURE D'OPTIMISATION DU DEPOT D'ENERGIE A ETE ASSOCIEE AU PROGRAMME. L'EFFICACITE DE CETTE PROCEDURE A ETE EVALUEE NUMERIQUEMENT A PARTIR D'HISTOGRAMMES TEMPERATURE-VOLUME ET D'UNE ETUDE DOSIMETRIQUE SUR SIX POINTS DE CONTROLE SUR SIX POINTS DE CONTROLE LOCALISES AUTOUR DE LA TUMEUR SUR UN CAS CLINIQUE.
Author: Claudine Niederst
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
LES BESOINS D'UN PROGRAMME DE PLANIFICATION DE TRAITEMENT EN HYPERTHERMIE SE FONT DE PLUS EN PLUS RESSENTIR EN RAISON DES DIFFICULTES A SUIVRE EN TEMPS REEL L'EVOLUTION DE LA TEMPERATURE DANS L'INTEGRALITE DU VOLUME CHAUFFE ET DE L'APPARITION DE SYSTEME DE CHAUFFE DE PLUS EN PLUS COMPLEXES A CONTROLER. DANS LE BUT DE PREVOIR LES NIVEAUX THERMIQUES SUSCEPTIBLES D'ETRE ATTEINTS EN CLINIQUE, UN PROGRAMME, EN TROIS DIMENSIONS, INTEGRANT LES DONNEES PATIENT ET MACHINE A ETE MIS AU POINT EN CONSIDERANT LES TROIS ETAPES SUIVANTES: 1. LE CALCUL DE LA REPARTITION DU DEPOT D'ENERGIE DANS LES TISSUS, OBTENUE A PARTIR DES EQUATIONS DE MAXWELL, RESOLUES PAR LA METHODE DES EQUATIONS INTEGRALES ASSOCIEE A UNE PROCEDURE ITERATIF. 2. LE CALCUL DE LA DISTRIBUTION DE LA TEMPERATURE A PARTIR DE L'EQUATION BIOTHERMIQUE, RESOLUE PAR LA METHODE DES DIFFERENCES FINIES SELON LE SCHEMA DE DUFORT ET FRANKEL. 3. L'OPTIMISATION D'UN PLAN DE TRAITEMENT PAR EVALUATION DE L'AMPLITUDE ET DE LA PHASE OPTIMALE DES SOURCES RADIOFREQUENCES CONSTITUANT LE SYSTEME DE CHAUFFE ET CE A PARTIR D'UNE METHODE DU GRADIENT. LA CAPACITE DE CE PROGRAMME A REPRODUIRE LES DISTRIBUTIONS MESUREES DU DEPOT D'ENERGIE GENEREES PAR DES APPLICATEURS MICRO-ONDES A ETE TESTE SUR FANTOME EQUIVALENT MUSCLE. GLOBALEMENT DES RAPPORTS DE 52 A 72% ENTRE LA TAILLE DU CHAMP EFFECTIF ET LA PROFONDEUR DE PENETRATION NUMERIQUES ET EXPERIMENTALES ONT ETE OBSERVES. DE LA MEME MANIERE, LE PROGRAMME THERMIQUE A ETE TESTE A LA FOIS SUR FANTOME EQUIVALENT MUSCLE ET SUR UN CAS CLINIQUE. LES CONDITIONS OPTIMALES D'UTILISATION DE L'ALGORITHME EN TERME D'INCREMENT EN TEMPS ET DE CRITERE D'ARRET ONT ETE ETABLIES. L'ALGORITHME, BASE SUR LE SCHEMA DE DUFORT ET FRANKEL, A L'AVANTAGE D'ETRE STABLE QUEL QUE SOIT LE PAS EN TEMPS, CONTRAIREMENT AUX AUTRES SCHEMAS EXPLICITES USUELS CONDITIONNES EUX PAR LE CRITERE DE FOURIER. UNE ETUDE A MONTRE QU'UN PAS EN TEMPS, ENVIRON TRENTE FOIS SUPERIEUR A CELUI IMPOSE PAR LE CRITERE DE FOURIER, FOURNISSAIT LE MEILLEUR COMPROMIS ENTRE LA PRECISION ET LA VITESSE DE CONVERGENCE DES CALCULS. ENFIN UNE PROCEDURE D'OPTIMISATION DU DEPOT D'ENERGIE A ETE ASSOCIEE AU PROGRAMME. L'EFFICACITE DE CETTE PROCEDURE A ETE EVALUEE NUMERIQUEMENT A PARTIR D'HISTOGRAMMES TEMPERATURE-VOLUME ET D'UNE ETUDE DOSIMETRIQUE SUR SIX POINTS DE CONTROLE SUR SIX POINTS DE CONTROLE LOCALISES AUTOUR DE LA TUMEUR SUR UN CAS CLINIQUE.
Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 1948
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Book Description
Author: Carrie Sussman
Publisher: Lippincott Williams & Wilkins
ISBN: 9780781774444
Category : Medical
Languages : en
Pages : 786
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Book Description
Designed for health care professionals in multiple disciplines and clinical settings, this comprehensive, evidence-based wound care text provides basic and advanced information on wound healing and therapies and emphasizes clinical decision-making. The text integrates the latest scientific findings with principles of good wound care and provides a complete set of current, evidence-based practices. This edition features a new chapter on wound pain management and a chapter showing how to use negative pressure therapy on many types of hard-to-heal wounds. Technological advances covered include ultrasound for wound debridement, laser treatments, and a single-patient-use disposable device for delivering pulsed radio frequency.
Author: M.Heinrich Seegenschmiedt
Publisher: Springer Science & Business Media
ISBN: 3642578586
Category : Medical
Languages : en
Pages : 479
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Book Description
Hyperthermia has been found to be of great benefit in combination with radiation therapy or chemotherapy in the management of patients with difficult and com plicated tumor problems. It has been demonstrated to increase the efficacy, of ionising radiation when used locally but also has been of help in combination with systemic chemotherapy where hyperthermia is carried out to the total body. Problems remain with regard to maximizing the effects of hyperthermia as in fluenced by blood flow, heat loss, etc. The present volume defines the current knowledge relative to hyperthermia with radiation therapy and/or chemotherapy, giving a comprehensive overview of its use in cancer management. Philadelphia/Hamburg, June 1995 L.W. BRADY H.-P. HEILMANN Preface In an attempt to overcome tumor resistance, hypoxia, or unfavorable tumor condi tions, oncological research has come to focus on gene therapy, immunotherapy, new cytotoxic agents, and increasingly sophisticated radiotherapy. Radiation research has been directed towards heavy particle therapy and modification of the radiation response by either protecting or sensitizing agents. Improved dose localization using rotational or conformal strategies has also been implemented. Recently, changes in radiation fractionation schedules have shown promise of better results. Hyperthermia in cancer therapy can be viewed similarly as another means to increase the sensitivity of tumors to radio- and chemotherapy.
Author: William Sims Bainbridge
Publisher: Springer
ISBN: 9789401703604
Category : Technology & Engineering
Languages : en
Pages : 468
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Book Description
M. C. Roco and W.S. Bainbridge In the early decades of the 21st century, concentrated efforts can unify science based on the unity of nature, thereby advancing the combination of nanotechnology, biotechnology, information technology, and new technologies based in cognitive science. With proper attention to ethical issues and societal needs, converging in human abilities, societal technologies could achieve a tremendous improvement outcomes, the nation's productivity, and the quality of life. This is a broad, cross cutting, emerging and timely opportunity of interest to individuals, society and humanity in the long term. The phrase "convergent technologies" refers to the synergistic combination of four major "NBIC" (nano-bio-info-cogno) provinces of science and technology, each of which is currently progressing at a rapid rate: (a) nanoscience and nanotechnology; (b) biotechnology and biomedicine, including genetic engineering; (c) information technology, including advanced computing and communications; (d) cognitive science, including cognitive neuroscience. Timely and Broad Opportunity. Convergence of diverse technologies is based on material unity at the nanoscale and on technology integration from that scale.
Author: Robert A. Aldrich
Publisher: Natural Resources
ISBN: 9780935817577
Category : Greenhouse management
Languages : en
Pages : 212
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Book Description
Author: Faiz M. Khan
Publisher: Lippincott Williams & Wilkins
ISBN: 1451149131
Category : Medical
Languages : en
Pages : 576
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Book Description
Dr. Khan's classic textbook on radiation oncology physics is now in its thoroughly revised and updated Fourth Edition. It provides the entire radiation therapy team—radiation oncologists, medical physicists, dosimetrists, and radiation therapists—with a thorough understanding of the physics and practical clinical applications of advanced radiation therapy technologies, including 3D-CRT, stereotactic radiotherapy, HDR, IMRT, IGRT, and proton beam therapy. These technologies are discussed along with the physical concepts underlying treatment planning, treatment delivery, and dosimetry. This Fourth Edition includes brand-new chapters on image-guided radiation therapy (IGRT) and proton beam therapy. Other chapters have been revised to incorporate the most recent developments in the field. This edition also features more than 100 full-color illustrations throughout. A companion Website will offer the fully searchable text and an image bank.
Author: S. Ananthi
Publisher: New Age International
ISBN: 8122415725
Category : Medical instruments and apparatus
Languages : en
Pages : 15
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Book Description
About the Book: This book has therefore subdivided the realm of medical instruments into the same sections like a text on physiology and introduces the basic early day methods well, before dealing with the details of present day instruments currently in
Author: International Atomic Energy Agency
Publisher:
ISBN: 9789201416100
Category : Science
Languages : en
Pages : 0
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Book Description
Provides a comprehensive overview of the development of procedures for in vivo dosimetry in radiotherapy. It elaborates on the technology behind in vivo dosimetry and describes an initial set of measurements.
Author: Ping Xia, PhD
Publisher: Springer Publishing Company
ISBN: 161705240X
Category : Medical
Languages : en
Pages : 274
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Book Description
This guide & companion to the Radiation Oncology Self-Assessment Guide is a comprehensive physics review for anyone in the field of radiation oncology looking to enhance their knowledge of medical physics. It covers in depth the principles of radiation physics as applied to radiation therapy along with their technical and clinical applications. To foster retention of key concepts and data, the resource utilizes a user-friendly ìflash cardî question and answer format with over 800 questions. The questions are supported by detailed answers and rationales along with reference citations for source information. The Guide is comprised of 14 chapters that lead the reader through the radiation oncology physics field, from basic physics to current practice and latest innovations. Aspects of basic physics covered include fundamentals, photon and particle interactions, and dose measurement. A section on current practice covers treatment planning, safety, regulations, quality assurance, and SBRT, SRS, TBI, IMRT, and IGRT techniques. A chapter unique to this volume is dedicated to those topics in diagnostic imaging most relevant to radiology, including MRI, ultrasound, fluoroscopy, mammography, PET, SPECT, and CT. New technologies such as VMAT, novel IGRT devices, proton therapy, and MRI-guided therapy are also incorporated. Focused and authoritative, this must-have review combines the expertise of clinical radiation oncology and radiation physics faculty from the Cleveland Clinic Taussig Cancer Institute. Key Features: Includes more than 800 questions with detailed answers and rationales A one-stop guide for those studying the physics of radiation oncology including those wishing to reinforce their current knowledge of medical physics Delivered in a ìflash cardî format to facilitate recall of key concepts and data Presents a unique chapter on diagnostic imaging topics most relevant to radiation oncology Content provided by a vast array of contributors, including physicists, radiation oncology residents, dosimetrists, and physicians About the Editors: Andrew Godley, PhD, is Staff Physicist, Department of Radiation Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland OH Ping Xia, PhD, is Head of Medical Physics and Professor of Molecular Medicine, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH.
