Download or read book Validation of Radiation Treatment Planning with a Pseudo CT Derived from MR Images written by Gisele Castro Pereira and published by . This book was released on 2015 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically CT has been the necessary for radiation therapy dose calculation due to its inherent density information. However there is increased interest in using solely MR for treatment planning. This study describes the DRR generation and evaluates the accuracy of dose calculation for radiation oncology planning using pseudo-CT created solely from MRI. Four types of data sets were created for each of seven patients for dose comparison. 1) The regular CT, 2) the pseudo-CT created from MRI, 3) T2 image for bulk density assignment and 4) the same CT image as above with a homogenous density assigned. 3D and VMAT plans were generated for each image set using the regular CT (reference image) in a commercial planning system. The plan was then transferred onto the three other methods (pseudo-CT, bulk density assignment and homogenous), and the dose was recalculated by keeping the same field parameters and monitor units. Dose point calculation and gamma index was used to access the dose accuracy. The point dose calculation agreement and the percentage of points passing the gamma index are excellent for the pseudo-CT and bulk methods with very minimal difference compared to the reference CT. The dose calculation for bulk density method is considered precise in the literature but very labor intensive and not clinical feasible. This work shows the accuracy of dose calculation with pseudo-CT is as precise as assigned bulk density method and is much easier to implement into clinical practice.
Download or read book Generation of Pseudo CT Using Two Sets of MRI Scans for MRI only Radiation Therapy written by Samuel C. Leu and published by . This book was released on 2019 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increasing interests in magnetic resonance imaging (MRI)-only radiation therapy (RT) and the emergence of MRI system integrated with the linear accelerator, a method substituting the computed tomography (CT) in radiation therapy is required. The method to substitute the CT is by generating a pseudo-CT (pCT). A CT is necessary to provide the electron density information and to calculate the simulated dose distribution in treatment plans. In this thesis, a voxel-based method is developed to generate the pCT image using two sets of MRI data. The method is trained with the CT data and two different sets of MRI data of multiple patients, where the anatomical structures in the images are segmented into several regions. A regression analysis is used to determine the two-variable polynomial function for each region to relate a voxel's two MRI intensity values to its CT number. This method is validated by applying a leave-one-out-cross-validation (LOOCV) and the accuracy of the pCT is evaluated by determining the mean absolute error (MAE) comparing the pseudo-CT to the reference-CT. The average MAE across all patients is 40.3 ± 3.0 Hounsfield Unit (HU). Our proposed method shows promising results in using a multi-variable polynomial prediction model to predict CT numbers from MRI images. The generated pCT images closely match the reference-CT image and the MAE results are comparable to other studies using more complicated methods.
Download or read book PET CT in Radiotherapy Treatment Planning E Book written by Arnold C. Paulino and published by Elsevier Health Sciences. This book was released on 2008-05-19 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is an exciting new guide to the use of PET-CT imaging in radiotherapy. You’ll get practical, useful information for utilizing this novel imaging technique—from different methods for contouring biological target volumes in various anatomic regions to how different experts use this imaging in targeted treatment. This thorough text helps you make concise, accurate treatment choices based on current evidence and expert authority. The result is an essential tool for everyone on the radiotherapy treatment team in the era of image-guided radiotherapy. Helps familiarize you with the basics of PET imaging in nuclear medicine. Covers the use of PET-CT with radiotherapy treatment planning, offering practical guidance in how different experts use this relatively new technology. Highlights contrast using full-color images, clearly indicating target volumes and different radiation dosages. Outlines the advantages and disadvantages of different techniques in contouring PET-CT target volumes for radiotherapy. Features case illustrations in using PET-CT in radiotherapy treatment planning for different tumor sites.
Download or read book MRI for Radiotherapy written by Gary Liney and published by Springer. This book was released on 2019-06-20 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides, for the first time, a unified approach to the application of MRI in radiotherapy that incorporates both a physics and a clinical perspective. Readers will find detailed information and guidance on the role of MRI in all aspects of treatment, from dose planning, with or without CT, through to response assessment. Extensive coverage is devoted to the latest technological developments and emerging options. These include hybrid MRI treatment systems, such as MRI-Linac and proton-guided systems, which are ushering in an era of real-time MRI guidance. The past decade has witnessed an unprecedented rise in the use of MRI in the radiation treatment of cancer. The development of highly conformal dose delivery techniques has led to a growing need to harness advanced imaging for patient treatment. With its flexible soft tissue contrast and ability to acquire functional information, MRI offers advantages at all stages of treatment. In documenting the state of the art in the field, this book will be of value to a wide range of professionals. The authors are international experts drawn from the scientific committee of the 2017 MR in RT symposium and the faculty of the ESTRO teaching course on imaging for physicists.
Download or read book Photon Electron Proton and Neutron Interaction Data for Body Tissues written by and published by International Commission on Radiation. This book was released on 1992-01-01 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation and Synthesis in Medical Imaging written by Sotirios A. Tsaftaris and published by Springer. This book was released on 2017-09-28 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second International Workshop on Simulation and Synthesis in Medical Imaging, held in conjunction with MICCAI 2017, in Québec City, Canada, in September 2017. The 11 revised full papers presented were carefully reviewed and selected from 14 submissions. The contributions span the following broad categories: cross modality (PET/MR, PET/CT, CT/MR, etc.) image synthesis, simulation and synthesis from large-scale image databases, automated techniques for quality assessment images, and several applications of image synthesis and simulation in medical imaging such as image interpolation and segmentation, image reconstruction, cell imaging, and blood flow.
Download or read book Diseases of the Abdomen and Pelvis 2018 2021 written by Juerg Hodler and published by Springer. This book was released on 2018-03-20 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book deals with imaging of the abdomen and pelvis, an area that has seen considerable advances over the past several years, driven by clinical as well as technological developments. The respective chapters, written by internationally respected experts in their fields, focus on imaging diagnosis and interventional therapies in abdominal and pelvic disease; they cover all relevant imaging modalities, including magnetic resonance imaging, computed tomography, and positron emission tomography. As such, the book offers a comprehensive review of the state of the art in imaging of the abdomen and pelvis. It will be of interest to general radiologists, radiology residents, interventional radiologists, and clinicians from other specialties who want to update their knowledge in this area.
Download or read book Machine Learning in Radiation Oncology written by Issam El Naqa and published by Springer. This book was released on 2015-06-19 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a complete overview of the role of machine learning in radiation oncology and medical physics, covering basic theory, methods, and a variety of applications in medical physics and radiotherapy. An introductory section explains machine learning, reviews supervised and unsupervised learning methods, discusses performance evaluation, and summarizes potential applications in radiation oncology. Detailed individual sections are then devoted to the use of machine learning in quality assurance; computer-aided detection, including treatment planning and contouring; image-guided radiotherapy; respiratory motion management; and treatment response modeling and outcome prediction. The book will be invaluable for students and residents in medical physics and radiation oncology and will also appeal to more experienced practitioners and researchers and members of applied machine learning communities.
Download or read book Reference Manual for Magnetic Resonance Safety Implants and Devices written by Frank G. Shellock and published by . This book was released on 2013-01-01 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Reference Manual for Magnetic Resonance Safety, Implants, and Devices: 2013 Edition is an indispensable textbook for radiologists, MRI technologists, facility managers, and other healthcare professionals. This internationally acclaimed, annually revised, and fully updated textbook series is a comprehensive information resource that includes guidelines and recommendations for MRI safety and patient management. The content is based on the latest peer-reviewed publications, labeling information from medical device companies, findings from recent investigations, as well as documents developed by professional and governmental organizations. Importantly, this textbook is a vital source of information for implants and devices evaluated for MRI-related issues. "The List" contains tabulated data for thousands of objects, including products tested at 3-Tesla. Coverage spans the full range of implants and devices encountered in patients referred for MRI procedures.
Download or read book Spine Surgery 2 Vol Set E Book written by Edward C. Benzel and published by Elsevier Health Sciences. This book was released on 2012-05-14 with total page 2912 pages. Available in PDF, EPUB and Kindle. Book excerpt: Build a solid foundation of knowledge based on the fundamentals and employ step-by-step instruction from Spine Surgery. Edited by Edward C. Benzel, this best-selling medical reference explores the full spectrum of surgical techniques used in spine surgery and delivers the comprehensive, cutting-edge guidance you need to achieve successful outcomes. Online access, thorough updates, contributions by leading international authorities, an abundance of detailed illustrations, and procedural video clips provide everything you need to avoid and manage complex problems. Glean essential, up-to-date, need-to-know information in one comprehensive reference that explores the full spectrum of surgical techniques used in spine surgery. Hone your surgical skills and technique with intraoperative videos and more than 800 outstanding illustrations demonstrating each technique step by step. Grasp and apply the latest knowledge from more than 25 brand-new chapters, as well as extensive revisions or total rewrites to the majority of existing chapters to present all of the most up-to-date information available on every aspect of spine surgery including motion preservation technologies, endovascular management, back pain and psychosocial interactions, biomechanics, and more. Consult with the best. Renowned neurosurgery authority Edward C. Benzel leads an international team of accomplished neurosurgeons and orthopedic surgeons - many new to this edition - who provide dependable guidance and share innovative approaches to surgical techniques and complications management. Equip yourself to address increasing occurrences of pain among aging and physically active patients. Access the information you need, where you need it on your laptop or mobile device via expertconsult.com, with fully searchable text, a wealth of procedural videos, online updates from the experts, downloadable image gallery and links to PubMed.
Download or read book Adaptive Radiation Therapy written by X. Allen Li and published by CRC Press. This book was released on 2011-01-27 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern medical imaging and radiation therapy technologies are so complex and computer driven that it is difficult for physicians and technologists to know exactly what is happening at the point-of-care. Medical physicists responsible for filling this gap in knowledge must stay abreast of the latest advances at the intersection of medical imaging an
Download or read book MRI in Clinical Practice written by Gary Liney and published by Springer Science & Business Media. This book was released on 2007-04-27 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: MRI is a continually evolving and expanding subject making an ever-increasing impact on medical practice. There are many comprehensive large MRI textbooks on the market but there is a distinct lack of short pocket-sized reference books to suit the growing number of people from various disciplines working in the medical imaging field today. This book provides an easily accessible source of reference material to supplement existing large texts.
Download or read book Radiomics and Radiogenomics written by Ruijiang Li and published by CRC Press. This book was released on 2019-07-09 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiomics and Radiogenomics: Technical Basis and Clinical Applications provides a first summary of the overlapping fields of radiomics and radiogenomics, showcasing how they are being used to evaluate disease characteristics and correlate with treatment response and patient prognosis. It explains the fundamental principles, technical bases, and clinical applications with a focus on oncology. The book’s expert authors present computational approaches for extracting imaging features that help to detect and characterize disease tissues for improving diagnosis, prognosis, and evaluation of therapy response. This book is intended for audiences including imaging scientists, medical physicists, as well as medical professionals and specialists such as diagnostic radiologists, radiation oncologists, and medical oncologists. Features Provides a first complete overview of the technical underpinnings and clinical applications of radiomics and radiogenomics Shows how they are improving diagnostic and prognostic decisions with greater efficacy Discusses the image informatics, quantitative imaging, feature extraction, predictive modeling, software tools, and other key areas Covers applications in oncology and beyond, covering all major disease sites in separate chapters Includes an introduction to basic principles and discussion of emerging research directions with a roadmap to clinical translation
Download or read book Radiation Oncology Physics written by International Atomic Energy Agency and published by IAEA. This book was released on 2005 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is aimed at students and teachers involved in teaching programmes in field of medical radiation physics, and it covers the basic medical physics knowledge required in the form of a syllabus for modern radiation oncology. The information will be useful to those preparing for professional certification exams in radiation oncology, medical physics, dosimetry or radiotherapy technology.
Download or read book Diseases of the Chest Breast Heart and Vessels 2019 2022 written by Juerg Hodler and published by Springer. This book was released on 2019-02-19 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book focuses on diagnostic and interventional imaging of the chest, breast, heart, and vessels. It consists of a remarkable collection of contributions authored by internationally respected experts, featuring the most recent diagnostic developments and technological advances with a highly didactical approach. The chapters are disease-oriented and cover all the relevant imaging modalities, including standard radiography, CT, nuclear medicine with PET, ultrasound and magnetic resonance imaging, as well as imaging-guided interventions. As such, it presents a comprehensive review of current knowledge on imaging of the heart and chest, as well as thoracic interventions and a selection of "hot topics". The book is intended for radiologists, however, it is also of interest to clinicians in oncology, cardiology, and pulmonology.
Download or read book Automation and Artificial Intelligence in Radiation Oncology written by Savino Cilla and published by Frontiers Media SA. This book was released on 2022-11-16 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Practical Guide to MR Linac written by Indra J. Das and published by Springer Nature. This book was released on with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
