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Author :
Publisher : Stanford University
ISBN 13 :
Total Pages : 129 pages
Book Rating : 4./5 ( download)
Download or read book Lag Correction in Amorphous Silicon Flat-Panel X-Ray Computed Tomography written by and published by Stanford University. This book was released on with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jared Daniel Starman
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (694 download)
Download or read book Lag Correction in Amorphous Silicon Flat-panel X-ray Computed Tomography written by Jared Daniel Starman and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cone-beam computed tomography (CBCT), which uses much of the same hardware as traditional 2-D x-ray fluoroscopy, is now being used during patient treatment. The ability to perform CBCT scans has been driven by the development of amorphous silicon (a-Si) digital flat-panel (FP) x-ray detector technology. These detectors were originally designed for radiography and fluoroscopy, but because of their compactness, flexibility, low spatial distortion, and relative low-cost, are also practical for CBCT. One factor limiting the CBCT image quality for a-Si x-ray detectors is detector lag, stemming from charge trapping in the a-Si layer. Lag is defined as residual signal present in the detector, and can lead to a range of image artifacts in CBCT reconstructions, such as severe image shading for elliptical or off-center objects that could potentially obscure anatomy of interest. Current lag correction methods for a-Si FP detectors assume that the detector is linear and time invariant (LTI) and determine a temporal impulse response for the system. The detector output is deconvolved with the measured impulse response to compute the lag-corrected data. However a conventional FP is neither linear nor time invariant. Different techniques for measuring the FP impulse response are examined, as well as their effect on the final CBCT image reconstruction. A range of results are achieved by the different techniques, highlighting the non-linearity and time variance of the system. A novel non-LTI algorithm is then presented that better describes the x-ray detector dynamics, gives exposure independent results, and provides significant error reduction in CBCT for large objects where lag artifacts are most severe. A second method to reduce lag based on a hardware change to the a-Si detector is also described in this dissertation. The photodiode at each detector pixel is briefly operated in a forward bias mode to maintain saturation of charge trap states. Detector measurements and CBCT scans with and without the detector forward biasing are made to show image improvement and the trade-offs of using the hardware method.
Author : Shyamsunder Mandayam
Publisher : Springer Nature
ISBN 13 : 9811690936
Total Pages : 432 pages
Book Rating : 4.8/5 (116 download)
Download or read book Advances in Non Destructive Evaluation written by Shyamsunder Mandayam and published by Springer Nature. This book was released on 2022-04-11 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Conference and Exhibition on Non Destructive Evaluation (NDE 2020). The contents of the volume encompass a vast spectrum from Conventional to Advanced NDE including novel methods, instrumentation, sensors, procedures, and data analytics as applied to all industry segments for quality control, periodic maintenance, life estimation, structural integrity and related areas. This book will be a useful reference for students, researchers and practitioners.
Author : Carlo Cavedon
Publisher : CRC Press
ISBN 13 : 1439890579
Total Pages : 492 pages
Book Rating : 4.4/5 (398 download)
Download or read book Cardiovascular and Neurovascular Imaging written by Carlo Cavedon and published by CRC Press. This book was released on 2015-08-22 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiovascular and Neurovascular Imaging: Physics and Technology explains the underlying physical and technical principles behind a range of cardiovascular and neurovascular imaging modalities, including radiography, nuclear medicine, ultrasound, and magnetic resonance imaging (MRI). Examining this interdisciplinary branch of medical imaging from a
Author : Chris C. Shaw
Publisher : Taylor & Francis
ISBN 13 : 143984626X
Total Pages : 272 pages
Book Rating : 4.4/5 (398 download)
Download or read book Cone Beam Computed Tomography written by Chris C. Shaw and published by Taylor & Francis. This book was released on 2014-02-14 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional computed tomography (CT) techniques employ a narrow array of x-ray detectors and a fan-shaped x-ray beam to rotate around the patient to produce images of thin sections of the patient. Large sections of the body are covered by moving the patient into the rotating x-ray detector and x-ray source gantry. Cone beam CT is an alternative technique using a large area detector and cone-shaped x-ray beam to produce 3D images of a thick section of the body with one full angle (360 degree or 180 degree plus detector coverage) rotation. It finds applications in situations where bulky, conventional CT systems would interfere with clinical procedures or cannot be integrated with the primary treatments or imaging systems. Cone Beam Computed Tomography explores the past, present, and future state of medical x-ray imaging while explaining how cone beam CT, with its superior spatial resolution and compact configuration, is used in clinical applications and animal research. The book: Supplies a detailed introduction to cone beam CT, covering basic principles and applications as well as advanced techniques Explores state-of-the-art research and future developments while examining the fundamental limitations of the technology Addresses issues related to implementation and system characteristics, including image quality, artifacts, radiation dose, and perception Reviews the historical development of medical x-ray imaging, from conventional CT techniques to volumetric 3D imaging Discusses the major components of cone beam CT: image acquisition, reconstruction, processing, and display A reference work for scientists, engineers, students, and imaging professionals, Cone Beam Computed Tomography provides a solid understanding of the theory and implementation of this revolutionary technology.
Author : Seymour H. Levitt
Publisher : Springer Science & Business Media
ISBN 13 : 3642115713
Total Pages : 1145 pages
Book Rating : 4.6/5 (421 download)
Download or read book Technical Basis of Radiation Therapy written by Seymour H. Levitt and published by Springer Science & Business Media. This book was released on 2012-01-25 with total page 1145 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a detailed examination of the technological basis of radiation therapy. It is jointly written by North American and European authors, which broadens the contents and increases the book’s applicability in daily practice throughout the world.
Author :
Publisher : Newnes
ISBN 13 : 0444536337
Total Pages : 4052 pages
Book Rating : 4.4/5 (445 download)
Download or read book Comprehensive Biomedical Physics written by and published by Newnes. This book was released on 2014-07-25 with total page 4052 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Biomedical Physics, Ten Volume Set is a new reference work that provides the first point of entry to the literature for all scientists interested in biomedical physics. It is of particularly use for graduate and postgraduate students in the areas of medical biophysics. This Work is indispensable to all serious readers in this interdisciplinary area where physics is applied in medicine and biology. Written by leading scientists who have evaluated and summarized the most important methods, principles, technologies and data within the field, Comprehensive Biomedical Physics is a vital addition to the reference libraries of those working within the areas of medical imaging, radiation sources, detectors, biology, safety and therapy, physiology, and pharmacology as well as in the treatment of different clinical conditions and bioinformatics. This Work will be valuable to students working in all aspect of medical biophysics, including medical imaging and biomedical radiation science and therapy, physiology, pharmacology and treatment of clinical conditions and bioinformatics. The most comprehensive work on biomedical physics ever published Covers one of the fastest growing areas in the physical sciences, including interdisciplinary areas ranging from advanced nuclear physics and quantum mechanics through mathematics to molecular biology and medicine Contains 1800 illustrations, all in full color
Author : Robert D. Timmerman
Publisher : Lippincott Williams & Wilkins
ISBN 13 : 1469801876
Total Pages : 384 pages
Book Rating : 4.4/5 (698 download)
Download or read book Image-Guided and Adaptive Radiation Therapy written by Robert D. Timmerman and published by Lippincott Williams & Wilkins. This book was released on 2012-10-09 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides detailed, state-of-the-art information and guidelines on the latest developments, innovations, and clinical procedures in image-guided and adaptive radiation therapy. The first section discusses key methodological and technological issues in image-guided and adaptive radiation therapy, including use of implanted fiducial markers, management of respiratory motion, image-guided stereotactic radiosurgery and stereotactic body radiation therapy, three-dimensional conformal brachytherapy, target definition and localization, and PET/CT and biologically conformal radiation therapy. The second section provides practical clinical information on image-guided adaptive radiation therapy for cancers at all common anatomic sites and for pediatric cancers. The third section offers practical guidelines for establishing an effective image-guided adaptive radiation therapy program.
Author :
Publisher :
ISBN 13 :
Total Pages : 760 pages
Book Rating : 4.3/5 (91 download)
Download or read book Medical Imaging written by and published by . This book was released on 2001 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ross I. Berbeco, Ph.D.
Publisher : CRC Press
ISBN 13 : 1498736351
Total Pages : 242 pages
Book Rating : 4.4/5 (987 download)
Download or read book Beam's Eye View Imaging in Radiation Oncology written by Ross I. Berbeco, Ph.D. and published by CRC Press. This book was released on 2017-09-01 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first dedicated overview for beam’s eye view (BEV) covers instrumentation, methods, and clinical use of this exciting technology, which enables real-time anatomical imaging. It highlights how the information collected (e.g., the shape and size of the beam aperture and intensity of the beam) is used in the clinic for treatment verification, adaptive radiotherapy, and in-treatment interventions. The chapters cover detector construction and components, common imaging procedures, and state of the art applications. The reader will also be presented with emerging innovations, including target modifications, real-time tracking, reconstructing delivered dose, and in vivo portal dosimetry. Ross I. Berbeco, PhD, is a board-certified medical physicist and Associate Professor of Radiation Oncology at the Dana-Farber Cancer Institute, Brigham and Women’s Hospital and Harvard Medical School.
Author :
Publisher :
ISBN 13 :
Total Pages : 512 pages
Book Rating : 4.3/5 (91 download)
Download or read book Medical Imaging written by and published by . This book was released on 1999 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Euclid Seeram
Publisher : Springer
ISBN 13 : 9811332444
Total Pages : 243 pages
Book Rating : 4.8/5 (113 download)
Download or read book Digital Radiography written by Euclid Seeram and published by Springer. This book was released on 2019-01-23 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of a well-received book that enriches the understanding of radiographers and radiologic technologists across the globe, and is designed to meet the needs of courses (units) on radiographic imaging equipment, procedures, production, and exposure. The book also serves as a supplement for courses that address digital imaging techniques, such as radiologic physics, radiographic equipment and quality control. In a broader sense, the purpose of the book is to meet readers’ needs in connection with the change from film-based imaging to film-less or digital imaging; today, all radiographic imaging worldwide is based on digital imaging technologies. The book covers a wide range of topics to address the needs of members of various professional radiologic technology associations, such as the American Society of Radiologic Technologists, the Canadian Association of Medical Radiation Technologists, the College of Radiographers in the UK, and the Australian and New Zealand Societies for Radiographers.
Author : Committee on the Mathematics and Physics of Emerging Dynamic Biomedical Imaging
Publisher : National Academies Press
ISBN 13 : 0309552923
Total Pages : 261 pages
Book Rating : 4.3/5 (95 download)
Download or read book Mathematics and Physics of Emerging Biomedical Imaging written by Committee on the Mathematics and Physics of Emerging Dynamic Biomedical Imaging and published by National Academies Press. This book was released on 1996-03-13 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This cross-disciplinary book documents the key research challenges in the mathematical sciences and physics that could enable the economical development of novel biomedical imaging devices. It is hoped that the infusion of new insights from mathematical scientists and physicists will accelerate progress in imaging. Incorporating input from dozens of biomedical researchers who described what they perceived as key open problems of imaging that are amenable to attack by mathematical scientists and physicists, this book introduces the frontiers of biomedical imaging, especially the imaging of dynamic physiological functions, to the educated nonspecialist. Ten imaging modalities are covered, from the well-established (e.g., CAT scanning, MRI) to the more speculative (e.g., electrical and magnetic source imaging). For each modality, mathematics and physics research challenges are identified and a short list of suggested reading offered. Two additional chapters offer visions of the next generation of surgical and interventional techniques and of image processing. A final chapter provides an overview of mathematical issues that cut across the various modalities.
Author : International Atomic Energy Agency
Publisher :
ISBN 13 : 9789201310101
Total Pages : 0 pages
Book Rating : 4.3/5 (11 download)
Download or read book Diagnostic Radiology Physics written by International Atomic Energy Agency and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is aimed at students and teachers involved in programmes that train medical physicists for work in diagnostic radiology. It provides a comprehensive overview of the basic medical physics knowledge required in the form of a syllabus for the practice of modern diagnostic radiology. This makes it particularly useful for graduate students and residents in medical physics programmes. The material presented in the publication has been endorsed by the major international organizations and is the foundation for academic and clinical courses in both diagnostic radiology physics and in emerging areas such as imaging in radiotherapy.
Author : Ehsan Samei
Publisher : Cambridge University Press
ISBN 13 : 9781107194885
Total Pages : 534 pages
Book Rating : 4.1/5 (948 download)
Download or read book The Handbook of Medical Image Perception and Techniques written by Ehsan Samei and published by Cambridge University Press. This book was released on 2018-12-13 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art review of key topics in medical image perception science and practice, including associated techniques, illustrations and examples. This second edition contains extensive updates and substantial new content. Written by key figures in the field, it covers a wide range of topics including signal detection, image interpretation and advanced image analysis (e.g. deep learning) techniques for interpretive and computational perception. It provides an overview of the key techniques of medical image perception and observer performance research, and includes examples and applications across clinical disciplines including radiology, pathology and oncology. A final chapter discusses the future prospects of medical image perception and assesses upcoming challenges and possibilities, enabling readers to identify new areas for research. Written for both newcomers to the field and experienced researchers and clinicians, this book provides a comprehensive reference for those interested in medical image perception as means to advance knowledge and improve human health.
Author : Tsutomu Miyasaka
Publisher : John Wiley & Sons
ISBN 13 : 3527347488
Total Pages : 484 pages
Book Rating : 4.5/5 (273 download)
Download or read book Perovskite Photovoltaics and Optoelectronics written by Tsutomu Miyasaka and published by John Wiley & Sons. This book was released on 2022-03-21 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perovskite Photovoltaics and Optoelectronics Discover a one-of-a-kind treatment of perovskite photovoltaics In less than a decade, the photovoltaics of organic-inorganic halide perovskite materials has surpassed the efficiency of semiconductor compounds like CdTe and CIGS in solar cells. In Perovskite Photovoltaics and Optoelectronics: From Fundamentals to Advanced Applications, distinguished engineer Dr. Tsutomu Miyasaka delivers a comprehensive exploration of foundational and advanced topics regarding halide perovskites. It summarizes the latest information and discussion in the field, from fundamental theory and materials to critical device applications. With contributions by top scientists working in the perovskite community, the accomplished editor has compiled a resource of central importance for researchers working on perovskite related materials and devices. This edited volume includes coverage of new materials and their commercial and market potential in areas like perovskite solar cells, perovskite light-emitting diodes (LEDs), and perovskite-based photodetectors. It also includes: A thorough introduction to halide perovskite materials, their synthesis, and dimension control Comprehensive explorations of the photovoltaics of halide perovskites and their historical background Practical discussions of solid-state photophysics and carrier transfer mechanisms in halide perovskite semiconductors In-depth examinations of multi-cation anion-based high efficiency perovskite solar cells Perfect for materials scientists, crystallization physicists, surface chemists, and solid-state physicists, Perovskite Photovoltaics and Optoelectronics: From Fundamentals to Advanced Applications is also an indispensable resource for solid state chemists and device/electronics engineers.
Author : Boaz Porat
Publisher : Courier Dover Publications
ISBN 13 : 0486462986
Total Pages : 468 pages
Book Rating : 4.4/5 (864 download)
Download or read book Digital Processing of Random Signals written by Boaz Porat and published by Courier Dover Publications. This book was released on 2008-02-29 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This excellent advanced text rigorously covers several topics. Geared toward students of electrical engineering, its material is sufficiently general to be applicable to other engineering fields. 1994 edition.
