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Variance Reduction Techniques For The Monte Carlo Calculations Of Electron Dose Distributions
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Book Synopsis Variance Reduction Techniques for the Monte Carlo Calculations of Electron Dose Distributions by : Mark Albert Holmes
Download or read book Variance Reduction Techniques for the Monte Carlo Calculations of Electron Dose Distributions written by Mark Albert Holmes and published by . This book was released on 1995 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Technologies in Radiation Oncology by : Wolfgang C. Schlegel
Download or read book New Technologies in Radiation Oncology written by Wolfgang C. Schlegel and published by Springer Science & Business Media. This book was released on 2006-01-27 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Summarizes the state of the art in the most relevant areas of medical physics and engineering applied to radiation oncology - Covers all relevant areas of the subject in detail, including 3D imaging and image processing, 3D treatment planning, modern treatment techniques, patient positioning, and aspects of verification and quality assurance - Conveys information in a readily understandable way that will appeal to professionals and students with a medical background as well as to newcomers to radiation oncology from the field of physics
Book Synopsis Monte Carlo Transport of Electrons and Photons by : T.M. Jenkins
Download or read book Monte Carlo Transport of Electrons and Photons written by T.M. Jenkins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: For ten days at the end of September, 1987, a group of about 75 scientists from 21 different countries gathered in a restored monastery on a 750 meter high piece of rock jutting out of the Mediterranean Sea to discuss the simulation of the transport of electrons and photons using Monte Carlo techniques. When we first had the idea for this meeting, Ralph Nelson, who had organized a previous course at the "Ettore Majorana" Centre for Scientific Culture, suggested that Erice would be the ideal place for such a meeting. Nahum, Nelson and Rogers became Co-Directors of the Course, with the help of Alessandro Rindi, the Director of the School of Radiation Damage and Protection, and Professor Antonino Zichichi, Director of the "Ettore Majorana" Centre. The course was an outstanding success, both scientifically and socially, and those at the meeting will carry the marks of having attended, both intellectually and on a personal level where many friendships were made. The scientific content of the course was at a very high caliber, both because of the hard work done by all the lecturers in preparing their lectures (e. g. , complete copies of each lecture were available at the beginning of the course) and because of the high quality of the "students", many of whom were accomplished experts in the field. The outstanding facilities of the Centre contributed greatly to the success. This volume contains the formal record of the course lectures.
Book Synopsis A monte-carlo calculation of electron depth-dose distribution by : L. W. Funk
Download or read book A monte-carlo calculation of electron depth-dose distribution written by L. W. Funk and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Automated Variance Reduction Technique for 3-D Monte Carlo Coupled Electron-photon-positron Simulation Using Deterministic Importance Functions by : Benoit Dionne
Download or read book Automated Variance Reduction Technique for 3-D Monte Carlo Coupled Electron-photon-positron Simulation Using Deterministic Importance Functions written by Benoit Dionne and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Three-dimensional Monte Carlo coupled electron-photon-positron transport calculations are often performed to determine characteristics such as energy or charge deposition in a wide range of systems exposed to radiation field such as electronic circuitry in a space-environment, tissues exposed to radiotherapy linear accelerator beams, or radiation detectors. Modeling these systems constitute a challenging problem for the available computational methods and resources because they can involve; i) very large attenuation, ii) large number of secondary particles due to the electron-photon-positron cascade, and iii) large and highly forward-peaked scattering. This work presents a new automated variance reduction technique, referred to as ADEIS (Angular adjoint-Driven Electron-photon-positron Importance Sampling), that takes advantage of the capability of deterministic methods to rapidly provide approximate information about the complete phase-space in order to automatically evaluate variance reduction parameters. More specifically, this work focuses on the use of discrete ordinates importance functions to evaluate angular transport and collision biasing parameters, and use them through a modified implementation of the weight-window technique. The application of this new method to complex Monte Carlo simulations has resulted in speedups as high as five orders of magnitude.
Book Synopsis Monte Carlo Techniques in Radiation Therapy by : Frank Verhaegen
Download or read book Monte Carlo Techniques in Radiation Therapy written by Frank Verhaegen and published by CRC Press. This book was released on 2021-11-29 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: About ten years after the first edition comes this second edition of Monte Carlo Techniques in Radiation Therapy: Introduction, Source Modelling, and Patient Dose Calculations, thoroughly updated and extended with the latest topics, edited by Frank Verhaegen and Joao Seco. This book aims to provide a brief introduction to the history and basics of Monte Carlo simulation, but again has a strong focus on applications in radiotherapy. Since the first edition, Monte Carlo simulation has found many new applications, which are included in detail. The applications sections in this book cover the following: Modelling transport of photons, electrons, protons, and ions Modelling radiation sources for external beam radiotherapy Modelling radiation sources for brachytherapy Design of radiation sources Modelling dynamic beam delivery Patient dose calculations in external beam radiotherapy Patient dose calculations in brachytherapy Use of artificial intelligence in Monte Carlo simulations This book is intended for both students and professionals, both novice and experienced, in medical radiotherapy physics. It combines overviews of development, methods, and references to facilitate Monte Carlo studies.
Book Synopsis Monte Carlo Techniques in Radiation Therapy by : Joao Seco
Download or read book Monte Carlo Techniques in Radiation Therapy written by Joao Seco and published by Taylor & Francis. This book was released on 2016-04-19 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern cancer treatment relies on Monte Carlo simulations to help radiotherapists and clinical physicists better understand and compute radiation dose from imaging devices as well as exploit four-dimensional imaging data. With Monte Carlo-based treatment planning tools now available from commercial vendors, a complete transition to Monte Carlo-base
Book Synopsis Application of Monte Carlo Simulations to the Development of Energy- and Intensity-modulated Electron Beam Radiation Therapy by : Michael C. Lee
Download or read book Application of Monte Carlo Simulations to the Development of Energy- and Intensity-modulated Electron Beam Radiation Therapy written by Michael C. Lee and published by . This book was released on 2002 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monte Carlo Calculations in Nuclear Medicine, Second Edition by : Michael Ljungberg
Download or read book Monte Carlo Calculations in Nuclear Medicine, Second Edition written by Michael Ljungberg and published by CRC Press. This book was released on 2012-11-06 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: From first principles to current computer applications, Monte Carlo Calculations in Nuclear Medicine, Second Edition: Applications in Diagnostic Imaging covers the applications of Monte Carlo calculations in nuclear medicine and critically reviews them from a diagnostic perspective. Like the first edition, this book explains the Monte Carlo method and the principles behind SPECT and PET imaging, introduces the reader to some Monte Carlo software currently in use, and gives the reader a detailed idea of some possible applications of Monte Carlo in current research in SPECT and PET. New chapters in this edition cover codes and applications in pre-clinical PET and SPECT. The book explains how Monte Carlo methods and software packages can be applied to evaluate scatter in SPECT and PET imaging, collimation, and image deterioration. A guide for researchers and students developing methods to improve image resolution, it also demonstrates how Monte Carlo techniques can be used to simulate complex imaging systems.
Book Synopsis Automated System for Monte Carlo Determination of Cutout Factors of Arbitrarily Shaped Electron Beams and Experimental Verification of Monte Carlo Calculated Dose Distributions by : Claude Albaret
Download or read book Automated System for Monte Carlo Determination of Cutout Factors of Arbitrarily Shaped Electron Beams and Experimental Verification of Monte Carlo Calculated Dose Distributions written by Claude Albaret and published by . This book was released on 2004 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The MC model was also used to calculate dose distributions with the fast MC code XVMC in CT images of phantoms of clinical interest. These dose distributions were compared to dose calculations performed by the pencil-beam algorithm-based treatment planning system CadPlan and verified against measurements. Good agreement between calculations and measurements was achieved with both systems for phantoms containing 1-dimensional heterogeneities, provided a minimal quality of the CT images. In phantoms with 3-dimensional heterogeneities however, CadPlan appeared unable to predict the dose accurately, whereas MC provided with a more satisfactory dose distribution, despite some local discrepancies." --
Book Synopsis Monte Carlo Calculations of Dose Distribution in SEM Irradiated Semiconductor Structures by : William L. Chadsey
Download or read book Monte Carlo Calculations of Dose Distribution in SEM Irradiated Semiconductor Structures written by William L. Chadsey and published by . This book was released on 1973 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monte Carlo calculations were performed to determine the two-dimensional dose distribution in a metal/oxide/silicon substrate structure irradiated by the electron beam from a scanning electron microscope (SEM). The objective was to investigate energy deposition in transistors neighboring an MOS capacitor test pattern irradiated by a SEM electron beam. The principal conclusion is that no damage to neighboring transistors is predicted - the dose in the oxide layer 2 microns from the boundary of the test pattern is four orders of magnitude smaller than the soe dose in the test pattern oxide for a 20 keV beam. Plots and tables of depth dose distribution, radial dose distribution, dose distribution near a rectangular target pattern, charge deposition distribution, and radial distribution of reflected charge are presented. (Author).
Book Synopsis The Macro Response Monte Carlo Method for Electron Transport by : Michelle M. Svatos
Download or read book The Macro Response Monte Carlo Method for Electron Transport written by Michelle M. Svatos and published by . This book was released on 1998 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improvements in Monte Carlo Simulation of Large Electron Fields by :
Download or read book Improvements in Monte Carlo Simulation of Large Electron Fields written by and published by . This book was released on 2007 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two Monte Carlo systems, EGSnrc and Geant4, were used to calculate dose distributions in large electron fields used in radiotherapy. Source and geometry parameters were adjusted to match calculated results with measurement. Both codes were capable of accurately reproducing the measured dose distributions of the 6 electron beams available on the accelerator. Depth penetration was matched to 0.1 cm. Depth dose curves generally agreed to 2% in the build-up region, although there is an additional 2-3% experimental uncertainty in this region. Dose profiles matched to 2% at the depth of maximum dose in the central region of the beam, out to the point of the profile where the dose begins to fall rapidly. A 3%/3mm match was obtained outside the central region except for the 6 MeV beam, where dose differences reached 5%. The discrepancy observed in the bremsstrahlung tail in published results that used EGS4 is no longer evident. The different systems required different source energies, incident beam angles, thicknesses of the exit window and primary foils, and distance between the primary and secondary foil. These results underscore the requirement for an experimental benchmark of electron scatter for beam energies and foils relevant to radiotherapy.
Book Synopsis Monte Carlo 20 and 45 MeV Bremsstrahlung and Dose-reduction Calculations by :
Download or read book Monte Carlo 20 and 45 MeV Bremsstrahlung and Dose-reduction Calculations written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The SANDYL electron-photon coupled Monte Carlo code has been compared with previously published experimental bremsstrahlung data at 20.9 MeV electron energy. The code was then used to calculate forward-directed spectra, angular distributions and dose-reduction factors for three practical configurations. These are: 20 MeV electrons incident on 1 mm of W + 59 mm of Be, 45 MeV electrons of 1 mm of W and 45 MeV electrons on 1 mm of W + 147 mm of Be. The application of these results to flash radiography is discussed. 7 references, 12 figures, 1 table.
Book Synopsis Monte Carlo Methods for Radiation Transport by : Oleg N. Vassiliev
Download or read book Monte Carlo Methods for Radiation Transport written by Oleg N. Vassiliev and published by Springer. This book was released on 2016-10-17 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a guide to the use of Monte Carlo techniques in radiation transport. This topic is of great interest for medical physicists. Praised as a "gold standard" for accurate radiotherapy dose calculations, Monte Carlo has stimulated a high level of research activity that has produced thousands of papers within the past few years. The book is designed primarily to address the needs of an academically inclined medical physicist who wishes to learn the technique, as well as experienced users of standard Monte Carlo codes who wish to gain insight into the underlying mathematics of Monte Carlo algorithms. The book focuses on the fundamentals—giving full attention to and explaining the very basic concepts. It also includes advanced topics and covers recent advances such as transport of charged particles in magnetic fields and the grid-based solvers of the Boltzmann equation.
Book Synopsis Monte Carlo Analysis of Energy Deposition in Solid State Materials by 400 and 200 MeV Electrons by : Richard Neil Yaw
Download or read book Monte Carlo Analysis of Energy Deposition in Solid State Materials by 400 and 200 MeV Electrons written by Richard Neil Yaw and published by . This book was released on 1992 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation dose distribution measurements have been carried out by the Naval Surface Warfare Center (NSWC) using 200 and 391 MeV electron beams completely penetrating layers of Aluminum, Lead and Aluminum, Polymethyl Melthacrylate (PMMA), and PMMA sandwiching an air gap. For the case of 391 MeV electrons, the results have been compared previously to the corresponding distributions predicted by the Monte Carlo simulation codes EGS3 and ACCEPT (Ref. 1). Those measurements/predictions for 391 MeV are here compared to predictions by the CYLTRAN electron/photon transport code, and the 200 MeV measurements done by NSWC are compared to CYLTRAN calculations. The CYLTRAN code predictions agree well with measurements at 391 MeV. Comparison of CYLTRAN calculations with the NSWC results for 200 MeV indicates possible saturation of the detectors used to take the measurements. The distribution of energy dose within the target has a large dependence on the location of the air gap. The variation in dose distribution is caused by the change in target geometry resulting from insertion of the air gap.
Book Synopsis Automatic Variance Reduction for Monte Carlo Simulations Via the Local Importance Function Transform by : Scott Allen Turner
Download or read book Automatic Variance Reduction for Monte Carlo Simulations Via the Local Importance Function Transform written by Scott Allen Turner and published by . This book was released on 1996 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
