Rbe
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Rbe Of Some Sodium Water And Bioelectric Parameters Of Gastrointestinal Absorption
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Author : B. E. Vaughan
language : en
Publisher:
Release Date : 1963
Rbe Of Some Sodium Water And Bioelectric Parameters Of Gastrointestinal Absorption written by B. E. Vaughan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Dogs as laboratory animals categories.
Rats and dogs were exposed to fast neutron and to 250 kvp X irradiation (rats) or to 1000 kvp X irradiation (dogs). Animals were exposed bilaterally to the whole body and depth dosimetry evaluated in each case. In the rat, 7 days after irradiating, bioelectric activity is markedly reduced from normal in stomach but not at the lower gastrointestinal level. An RBE value of 2-3 can be established for delayed reduction in gastric bioelectric activity, and this effect is readily demonstrated at neutron doses of 160 rad (1st collision). In the dog, 3 days after irradiating, the unidirectional transfer rates from plasma-to-lumen are decreased for sodium and for water. This occurs after X-irradiation at 1200 r (air dose) and after neutron irradiation at either 300 rad or 600 rad (1st collision). However, at 600 r X-irradiation doses (air) these transfer rates do not show a decrease, and tend in the opposite direction. An RBE value lying between 2 and 6 can be inferred for the delayed reduction in plasma-to-lumen transfers. (Author).
R B E S New Auction Sale Ledger With Money Column Alphabet
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Author : Robert Best EDE
language : en
Publisher:
Release Date : 1845
R B E S New Auction Sale Ledger With Money Column Alphabet written by Robert Best EDE and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1845 with categories.
Clinical Radiation Oncology
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Author : Leonard L. Gunderson
language : en
Publisher: Elsevier Health Sciences
Release Date : 2007-01-01
Clinical Radiation Oncology written by Leonard L. Gunderson and has been published by Elsevier Health Sciences this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-01 with Medical categories.
First Prize winner, Oncology Book Category, British Medical Association 2012 Medical Book Competition Deepen your knowledge with a comprehensive, clinical approach to the scientific foundations of radiation oncology and general oncology as well as state-of-the-art techniques and modalities. Implement a multidisciplinary, "team care" approach to providing intricate treatment plans for patients, often in conjunction with medical oncologists, and surgeons. Broaden your understanding of the basic biology of the disease processes. Examine the therapeutic management of specific disease sites based on single-modality and combined-modality approaches. Quickly and easily find critical information thanks to an easily accessible, full-color design with over 800 color figures that clearly depict treatment techniques. Get broad multimodality perspectives and unique insights from a diverse team of respected editors and contributors -many of whom are new to this edition - affiliated with institutions across North America and internationally Access the fully searchable text anywhere, anytime at www.expertconsult.com, along with references, additional images and tables, video clips and more! Stay current with comprehensive updates throughout that include a new chapter on survivorship issues, and additional video clips on treatments such as prostate and penile cancer brachytherapy. Improve outcomes by providing the most effective treatment for each patient with expanded coverage of new modalities and treatment regimens. Understand and comply with the latest staging guidelines. Drs. Gunderson and Tepper give you quick access to all the clinical tools you need to master the newest techniques and modalities in radiation oncology.
Stochastic Rbe In Cns Clinical Sobp A Novel Approach
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Author : Koh Wei Calvin
language : en
Publisher:
Release Date : 2017
Stochastic Rbe In Cns Clinical Sobp A Novel Approach written by Koh Wei Calvin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Proton Relative Biological Effectiveness (RBE) has been widely studied to address the concerns of biological uncertainties in treatment planning. In many proton centers, proton RBE is recognized as a constant value of 1.1, while a few other centers have developed their own models to determine the proton RBE. For many models, they had shown that proton RBE varies with proton dose, biological factors ((u03b1/u03b2)x) and linear energy transfer (LET). In this work, we will quantify the biological uncertainties in Spread Out Bragg Peak (SOBP) by using a novel stochastic RBE approach, where RBE is a random variable instead of a constant value. This approach allows us to analyse the uncertainties of RBE values within one voxel in the volume of interest and take these uncertainties into consideration during treatment planning. Dose calculation and sampling of RBE were done using Monte Carlo simulation with GEANT4 in a homogenous phantom and a clinical Central Nervous System (CNS) patient. A SOBP with the variation of RBE value was then evaluated using MATLAB in both examples. Conclusively, the preliminary result of this work enabled us to quantify the significance of biological uncertainties and this could provide us with valuable information for treatment planning.
Radiation Protection And Dosimetry
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Author : Michael G. Stabin
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-09-12
Radiation Protection And Dosimetry written by Michael G. Stabin and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-12 with Science categories.
This book provides a comprehensive yet accessible overview of all relevant topics in the field of radiation protection (health physics). The text is organized to introduce the reader to basic principles of radiation emission and propagation, to review current knowledge and historical aspects of the biological effects of radiation, and to cover important operational topics such as radiation shielding and dosimetry. The author’s website contains materials for instructors including PowerPoint slides for lectures and worked-out solutions to end-of-chapter exercises. The book serves as an essential handbook for practicing health physics professionals.
Rbe
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Author :
language : en
Publisher:
Release Date : 2000
Rbe written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Brazil categories.
Feudal Assessments And The Political Community Under Henry Ii And His Sons
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Author : Thomas K. Keefe
language : en
Publisher: Univ of California Press
Release Date : 2023-04-28
Feudal Assessments And The Political Community Under Henry Ii And His Sons written by Thomas K. Keefe and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-28 with Political Science categories.
This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1983.
Radiation Effects On Polymers For Biological Use
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Author : Henning Kausch
language : en
Publisher: Springer
Release Date : 2003-07-03
Radiation Effects On Polymers For Biological Use written by Henning Kausch and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-03 with Science categories.
Biomaterials repair, reinforce or replace damaged functional parts of the (human) body. All mechanical and biological interactions between an implant and the body occur across the interface, which has to correspond as nearly as possible to its particular function. Much of the progress in adapting polymer materials for use in a biological environment has been obtained through irradiation techniques. For this reason the most recent developments in four key areas are reviewed in this special volume: (1) the analysis of the topology and the elemental composition of a functional surface, (2) the chemical modification of the surface which results in highly pure, sterile and versatile surfaces, (3) the sterilisation of implantable devices via ionising radiation and its possible effects on the structural mechanical properties of polymers, and (4) the radiation effects on living cells and tissues which are of particular importance for radiation protection and radiotherapy.
Basic Sciences Of Nuclear Medicine
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Author : Magdy Khalil
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-10-26
Basic Sciences Of Nuclear Medicine written by Magdy Khalil and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-10-26 with Medical categories.
Nuclear medicine has become an ever-changing and expanding diagnostic and therapeutic medical profession. The day-to-day innovations seen in the field are, in great part, due to the integration of many scientific bases with complex technologic advances. The aim of this reference book, Basic Sciences of Nuclear Medicine, is to provide the reader with a comprehensive and detailed discussion of the scientific bases of nuclear medicine, covering the different topics and concepts that underlie many of the investigations and procedures performed in the field. Topics include radiation and nuclear physics, Tc-99m chemistry, single-photon radiopharmaceuticals and PET chemistry, radiobiology and radiation dosimetry, image processing, image reconstruction, quantitative SPECT imaging, quantitative cardiac SPECT, small animal imaging (including multimodality hybrid imaging, e.g., PET/CT, SPECT/CT, and PET/MRI), compartmental modeling, and tracer kinetics.
Carbon Ion Radiotherapy
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Author : Hirohiko Tsujii
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-25
Carbon Ion Radiotherapy written by Hirohiko Tsujii and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-25 with Medical categories.
This book serves as a practical guide for the use of carbon ions in cancer radiotherapy. On the basis of clinical experience with more than 7,000 patients with various types of tumors treated over a period of nearly 20 years at the National Institute of Radiological Sciences, step-by-step procedures and technological development of this modality are highlighted. The book is divided into two sections, the first covering the underlying principles of physics and biology, and the second section is a systematic review by tumor site, concentrating on the role of therapeutic techniques and the pitfalls in treatment planning. Readers will learn of the superior outcomes obtained with carbon-ion therapy for various types of tumors in terms of local control and toxicities. It is essential to understand that the carbon-ion beam is like a two-edged sword: unless it is used properly, it can increase the risk of severe injury to critical organs. In early series of dose-escalation studies, some patients experienced serious adverse effects such as skin ulcers, pneumonitis, intestinal ulcers, and bone necrosis, for which salvage surgery or hospitalization was required. To preclude such detrimental results, the adequacy of therapeutic techniques and dose fractionations was carefully examined in each case. In this way, significant improvements in treatment results have been achieved and major toxicities are no longer observed. With that knowledge, experts in relevant fields expand upon techniques for treatment delivery at each anatomical site, covering indications and optimal treatment planning. With its practical focus, this book will benefit radiation oncologists, medical physicists, medical dosimetrists, radiation therapists, and senior nurses whose work involves radiation therapy, as well as medical oncologists and others who are interested in radiation therapy.
