An Improved Positron Emission Tomography Pet Reconstruction Of 2d Activity Distribution Using Higher Order Scattered Data

Download An Improved Positron Emission Tomography Pet Reconstruction Of 2d Activity Distribution Using Higher Order Scattered Data full books in PDF, epub, and Kindle. Read online An Improved Positron Emission Tomography Pet Reconstruction Of 2d Activity Distribution Using Higher Order Scattered Data ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

An Improved Positron Emission Tomography (PET) Reconstruction of 2D Activity Distribution Using Higher Order Scattered Data

Author : Hongwei Sun
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

DOWNLOAD NOW!

Book Synopsis An Improved Positron Emission Tomography (PET) Reconstruction of 2D Activity Distribution Using Higher Order Scattered Data by : Hongwei Sun

Download or read book An Improved Positron Emission Tomography (PET) Reconstruction of 2D Activity Distribution Using Higher Order Scattered Data written by Hongwei Sun and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron Emission Tomography (PET) images reconstructed without adequate scatter corrections introduce noise and degrade image contrast. In commercial imaging systems, misalignment between computed tomography (CT) and PET images can introduce biases in the activity distribution. Recently, several reconstruction algorithms have been proposed, which made direct use of single scattered photons in the activity reconstruction. However, the realistic dataset contains single and higher order scattered photons, and current scatter reconstruction methods do not distinguish them. In this study, a novel reconstruction algorithm that is capable of processing higher order scattered photons was developed. A restricted attenuation correction method was created to avoid overcorrecting for scattered photons. The simulation outcomes have shown that the proposed methods can, under ideal energy resolution, reconstruct images that are qualitatively and quantitatively better than those obtained using existing algorithms, and that the methods show promise for use under more realistic clinical conditions.

An Investigation Into the Use of Scattered Photons to Improve 2D Position Emission Tomography (PET) Functional Imaging Quality

Author : Hongyan Sun
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

DOWNLOAD NOW!

Book Synopsis An Investigation Into the Use of Scattered Photons to Improve 2D Position Emission Tomography (PET) Functional Imaging Quality by : Hongyan Sun

Download or read book An Investigation Into the Use of Scattered Photons to Improve 2D Position Emission Tomography (PET) Functional Imaging Quality written by Hongyan Sun and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron emission tomography (PET) is a powerful metabolic imaging modality, which is designed to detect two anti-parallel 511 keV photons origniating from a positron-electron annihilation. However, it is possible that one or both of the annihilation photons undergo a Compton scattering in the object. This is more serious for a scanner operated in 3D mode or with large patients, where the scatter fraction can be as high as 40-60%. When one or both photons are scattered, the line of response (LOR) defined by connecting the two relevant detectors no longer passes through the annihilation position. Thus, scattered coincidences degrade image contrast and compromise quantitative accuracy. Various scatter correction methods have been proposed but most of them are based on estimating and subtracting the scatter from the measured data or incorporating it into an iterative reconstruction algorithm. By accurately measuring the scattered photon energy and taking advantage of the kinematics of Compton scattering, two circular arcs (TCA) in 2D can be identified, which describe the locus of all the possible scattering positions and encompass the point of annihilation. In the limiting case where the scattering angle approaches zero, the TCA approach the LOR for true coincidences. Based on this knowledge, a Generalized Scatter (GS) reconstruction algorithm has been developed in this thesis, which can use both true and scattered coincidences to extract the activity distribution in a consistent way. The annihilation position within the TCA can be further confined by adding a patient outline as a constraint into the GS algorithm. An attenuation correction method for the scattered coincidences was also developed in order to remove the imaging artifacts. A geometrical model that characterizes the different probabilities of the annihilation positions within the TCA was also proposed. This can speed up image convergence and improve reconstructed image quality. Finally, the GS algorithm has been adapted to deal with non-ideal energy resolutions. In summary, an algorithm that implicitly incorporates scattered coincidences into the image reconstruction has been developed. Our results demonstrate that this eliminates the need for scatter correction and can improve system sensitivity and image quality.

World Congress on Medical Physics and Biomedical Engineering, June 7-12, 2015, Toronto, Canada

Author : David A. Jaffray
Publisher : Springer
ISBN 13 : 3319193872
Total Pages : 1790 pages
Book Rating : 4.3/5 (191 download)

DOWNLOAD NOW!

Book Synopsis World Congress on Medical Physics and Biomedical Engineering, June 7-12, 2015, Toronto, Canada by : David A. Jaffray

Download or read book World Congress on Medical Physics and Biomedical Engineering, June 7-12, 2015, Toronto, Canada written by David A. Jaffray and published by Springer. This book was released on 2015-07-13 with total page 1790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the IUPESM World Biomedical Engineering and Medical Physics, a tri-annual high-level policy meeting dedicated exclusively to furthering the role of biomedical engineering and medical physics in medicine. The book offers papers about emerging issues related to the development and sustainability of the role and impact of medical physicists and biomedical engineers in medicine and healthcare. It provides a unique and important forum to secure a coordinated, multileveled global response to the need, demand and importance of creating and supporting strong academic and clinical teams of biomedical engineers and medical physicists for the benefit of human health.

Basic Radiological Physics

Author : Thayalan Kuppusamy
Publisher : JP Medical Ltd
ISBN 13 : 9352700481
Total Pages : 498 pages
Book Rating : 4.3/5 (527 download)

DOWNLOAD NOW!

Book Synopsis Basic Radiological Physics by : Thayalan Kuppusamy

Download or read book Basic Radiological Physics written by Thayalan Kuppusamy and published by JP Medical Ltd. This book was released on 2017-07-17 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition has been fully revised to provide radiologists with the latest advances in radiological physics. Divided into six sections, the book begins with an overview of general physics, followed by a section on radiation physics. The remaining chapters cover physics of diagnostic radiology, physics of nuclear medicine, physics of radiation therapy, and radiological health and safety. The second edition features many new topics, recent advances and detailed explanations of complicated concepts. The comprehensive text is further enhanced by nearly 350 radiological images, diagrams and tables. Key points Fully revised new edition providing latest advances in radiological physics Second edition features new topics, recent advances and explanations of complicated concepts Highly illustrated with nearly 350 radiological images, diagrams and tables Previous edition (9788171798544) published in 2001

Oxford Textbook of Neuroimaging

Author : Massimo Filippi
Publisher : Oxford University Press
ISBN 13 : 0191640921
Total Pages : 464 pages
Book Rating : 4.1/5 (916 download)

DOWNLOAD NOW!

Book Synopsis Oxford Textbook of Neuroimaging by : Massimo Filippi

Download or read book Oxford Textbook of Neuroimaging written by Massimo Filippi and published by Oxford University Press. This book was released on 2015-10-29 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of the Oxford Textbooks in Clinical Neurology series, the Oxford Textbook of Neuroimaging provides an overview of the established and latest neuroimaging methodologies, and illustrates their application to the main diseases of the brain and the spinal cord including movement disorders, headache and stroke. In addition, assessments of neuroimaging techniques in both adult and paediatric neurological conditions are included, enabling thorough examples from both age groups. This full-colour book contains 280 detailed photographs and illustrations that enable a clear understanding of each technique. Covering the newest advances, each different imagining technique is comprehensively described, providing a practical relevance and a stimulus for more in-depth readings. The print edition is supplemented with a concurrent online edition, which allows access to the full content of the textbook, contains links from the references to primary research journal articles, and provides access to figures and tables that can be downloaded by the user. Providing a balanced state-of-the-art guide to neuroimaging for neurologists and radiologists, this title will enhance understanding of the pathophysiological basis of neurological conditions and will help set the stage for future research.

Investigation of PET Image Reconstruction and Data Correction Techniques with Emphasis on an Accelerated Monte Carlo Simulation for Correction and Evaluation of PET

Download Investigation of PET Image Reconstruction and Data Correction Techniques with Emphasis on an Accelerated Monte Carlo Simulation for Correction and Evaluation of PET PDF Online Free

Author : Clay Houghton Holdsworth
Publisher :
ISBN 13 :
Total Pages : 574 pages
Book Rating : 4.:/5 ( download)

DOWNLOAD NOW!

Book Synopsis Investigation of PET Image Reconstruction and Data Correction Techniques with Emphasis on an Accelerated Monte Carlo Simulation for Correction and Evaluation of PET by : Clay Houghton Holdsworth

Download or read book Investigation of PET Image Reconstruction and Data Correction Techniques with Emphasis on an Accelerated Monte Carlo Simulation for Correction and Evaluation of PET written by Clay Houghton Holdsworth and published by . This book was released on 2002 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nuclear Science Symposium & Medical Imaging Conference

Author :
Publisher :
ISBN 13 :
Total Pages : 576 pages
Book Rating : 4.:/5 (318 download)

DOWNLOAD NOW!

Book Synopsis Nuclear Science Symposium & Medical Imaging Conference by :

Download or read book Nuclear Science Symposium & Medical Imaging Conference written by and published by . This book was released on 1994 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Dissertation Abstracts International

Author :
Publisher :
ISBN 13 :
Total Pages : 884 pages
Book Rating : 4.F/5 ( download)

DOWNLOAD NOW!

Book Synopsis Dissertation Abstracts International by :

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physics of PET and SPECT Imaging

Author : Magnus Dahlbom
Publisher : CRC Press
ISBN 13 : 1315356783
Total Pages : 519 pages
Book Rating : 4.3/5 (153 download)

DOWNLOAD NOW!

Book Synopsis Physics of PET and SPECT Imaging by : Magnus Dahlbom

Download or read book Physics of PET and SPECT Imaging written by Magnus Dahlbom and published by CRC Press. This book was released on 2017-02-17 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: PET and SPECT imaging has improved to such a level that they are opening up exciting new horizons in medical diagnosis and treatment. This book provides a complete introduction to fundamentals and the latest progress in the field, including an overview of new scintillator materials and innovations in photodetector development, as well as the latest system designs and image reconstruction algorithms. It begins with basics of PET and SPECT physics, followed by technology advances and computing methods, quantitative techniques, multimodality imaging, instrumentation, pre-clinical and clinical imaging applications.

Conference Record

Author :
Publisher :
ISBN 13 :
Total Pages : 760 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Conference Record by :

Download or read book Conference Record written by and published by . This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cardiovascular and Neurovascular Imaging

Author : Carlo Cavedon
Publisher : CRC Press
ISBN 13 : 1439890579
Total Pages : 492 pages
Book Rating : 4.4/5 (398 download)

DOWNLOAD NOW!

Book Synopsis Cardiovascular and Neurovascular Imaging by : Carlo Cavedon

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

Molecular Imaging

Author : Shankar Vallabhajosula
Publisher : Springer Science & Business Media
ISBN 13 : 3540767355
Total Pages : 379 pages
Book Rating : 4.5/5 (47 download)

DOWNLOAD NOW!

Book Synopsis Molecular Imaging by : Shankar Vallabhajosula

Download or read book Molecular Imaging written by Shankar Vallabhajosula and published by Springer Science & Business Media. This book was released on 2009-07-13 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioisotope-based molecular imaging probes provide unprecedented insight into biochemistry and function involved in both normal and disease states of living systems, with unbiased in vivo measurement of regional radiotracer activities offering very high specificity and sensitivity. No other molecular imaging technology including functional magnetic resonance imaging (fMRI) can provide such high sensitivity and specificity at a tracer level. The applications of this technology can be very broad ranging from drug development, pharmacokinetics, clinical investigations, and finally to routine diagnostics in radiology. The design and the development of radiopharmaceuticals for molecular imaging studies using PET/MicroPET or SPECT/MicroSPECT are a unique challenge. This book is intended for a broad audience and written with the main purpose of educating the reader on various aspects including potential clinical utility, limitations of drug development, and regulatory compliance and approvals.

PET

Author : Michael E. Phelps
Publisher : Springer Science & Business Media
ISBN 13 : 0387349464
Total Pages : 136 pages
Book Rating : 4.3/5 (873 download)

DOWNLOAD NOW!

Book Synopsis PET by : Michael E. Phelps

Download or read book PET written by Michael E. Phelps and published by Springer Science & Business Media. This book was released on 2006-12-30 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed to give the reader a solid understanding of the physics and instrumentation aspects of PET, including how PET data are collected and formed into an image. Topics include basic physics, detector technology used in modern PET scanners, data acquisition, and 3D reconstruction. A variety of modern PET imaging systems are also discussed, including those designed for clinical services and research, as well as small-animal imaging. Methods for evaluating the performance of these systems are also outlined. The book will interest nuclear medicine students, nuclear medicine physicians, and technologists.

PET Image Segmentation and Reconstruction Using Level Set Method

Author : Jinxiu Cheng-Liao
Publisher :
ISBN 13 : 9781124665665
Total Pages : pages
Book Rating : 4.6/5 (656 download)

DOWNLOAD NOW!

Book Synopsis PET Image Segmentation and Reconstruction Using Level Set Method by : Jinxiu Cheng-Liao

Download or read book PET Image Segmentation and Reconstruction Using Level Set Method written by Jinxiu Cheng-Liao and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron emission tomography (PET) is an imaging modality that can generate quantitative estimates of spatio-temporal distribution of radiotracers within the body in vivo. PET images are often segmented into regions of interest (ROI) to obtain time activity curves (TACs) which can be further analyzed to estimate kinetic parameters. However, segmenting PET images is not trivial because PET has relatively low spatial resolution, high noise, and lacks of anatomical information. In this dissertation we apply level set methods to PET image segmentation and reconstruction. Firstly, we propose an image segmentation method for 4-dimension dynamic PET images. We consider that voxels inside each organ have similar time activity curves. We develop a multiphase level set method that utilizes both the spatial and temporal information in a dynamic PET data set. Both computer simulation and real data experiments show that the proposed method results in smoother segments with less number of misclassified voxels compared to the dynamic clustering method. Secondly, we apply the level set method to PET image reconstruction to improve PET image quality. We propose a new approach to maximum a posteriori (MAP) reconstruction of PET images with a level set function based anatomical prior by taking advantage of anatomical information offered by PET/CT scanners. The image prior models both the smoothness of PET images and the similarity between functional boundaries in PET and anatomical boundaries in CT with no smoothing being applied across functional boundaries in PET images to reduce spill-over effect. Level set functions are used to represent smooth and closed functional boundaries. We conduct computer simulations to evaluate the performance of the proposed method. Compared with existing methods, the new method achieve better bias-variance performance for both phantoms. Finally we extend the anatomical boundary guided level set prior to direct MAP reconstruction of dynamic PET using Patlak kinetic model. The new method has the advantages of accurate modeling of noise prorogation from image reconstruction to kinetic parameter estimation and better delineation of functional boundaries using spatio-temporal information. We use nested algorithm to accelerate the optimization procedure. Computer simulation shows that the proposed method can improve quantitative accuracy of parametric image compared to other existing methods.

Positron Emission Tomography with Computed Tomography (PET/CT)

Author : Jonas Francisco Y. Santiago
Publisher : Springer
ISBN 13 : 3319055186
Total Pages : 135 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!

Book Synopsis Positron Emission Tomography with Computed Tomography (PET/CT) by : Jonas Francisco Y. Santiago

Download or read book Positron Emission Tomography with Computed Tomography (PET/CT) written by Jonas Francisco Y. Santiago and published by Springer. This book was released on 2014-06-28 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron Emission Tomography with Computed Tomography (PET/CT) is a nuclear medicine imaging modality using positron-emitting radiotracers and a combined PET and CT scanner in order to detect and localize high radiotracer signal abnormalities. Although PET has evolved into a diagnostic modality of prime importance in oncology (with the radiotracer (F18-FDG) it was originally envisioned to image and diagnose diseases of the brain and the heart. Lack or limited experience in PET may result in an erroneous interpretation of the findings in this sensitive imaging modality. The existence of various rare cancers has resulted in scanty if not a lack of knowledge about the usefulness of PET in these interesting albeit uncommon maladies. The author, drawing from more than ten years of experience as the chairman/director of the only PET Center in the Philippines, aims to present the most interesting cases he has encountered which may be educational to those beginning their practice or even helpful to veterans of the field whose scope of practice has been limited to the most common and reimbursable indications of an FDG-PET scan.

Electrical & Electronics Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 1904 pages
Book Rating : 4.3/5 (243 download)

DOWNLOAD NOW!

Book Synopsis Electrical & Electronics Abstracts by :

Download or read book Electrical & Electronics Abstracts written by and published by . This book was released on 1997 with total page 1904 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nuclear Cardiology and Multimodal Cardiovascular Imaging, E-Book

Author : Marcelo Fernando Di Carli
Publisher : Elsevier Health Sciences
ISBN 13 : 0323763049
Total Pages : 501 pages
Book Rating : 4.3/5 (237 download)

DOWNLOAD NOW!

Book Synopsis Nuclear Cardiology and Multimodal Cardiovascular Imaging, E-Book by : Marcelo Fernando Di Carli

Download or read book Nuclear Cardiology and Multimodal Cardiovascular Imaging, E-Book written by Marcelo Fernando Di Carli and published by Elsevier Health Sciences. This book was released on 2021-11-17 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen numerous advances in cardiovascular nuclear medicine technology, leading to more precise diagnoses and treatment and an expanded understanding of the molecular basis for cardiac disease. Nuclear Cardiology and Multimodal Cardiovascular Imaging is a one-stop, comprehensive guide to the diagnostic and clinical implications of this complex and increasingly important technology. Part of the Braunwald family of renowned cardiology references, it provides cutting-edge coverage of multimodal cardiac imaging along with case vignettes and integrated teaching content—ideal for cardiologists, cardiology fellows, radiologists, and nuclear medicine physicians. Features all the latest cardiovascular nuclear medicine studies with practical, evidence-based implications for personalized patient evaluation and treatment. Presents a consistent, patient-centered approach using integrated case vignettes correlated with specific nuclear medicine imaging findings. Discusses patient assessment criteria, risk factor criteria, pathology, evaluation criteria, outcomes, and other clinical implications. Covers a full range of imaging technologies, including SPECT/CT, PET/CT, and CT/MR hybrid radionuclide cardiovascular imaging studies. Addresses emerging clinical applications of nuclear imaging techniques for precision-based medicine, including targeted molecular imaging and cell therapies. Includes sections on instrumentation/principles of imaging; protocols and interpretation; applications in coronary artery disease, special populations, and heart failure; artificial intelligence, and more. Contains guidelines and appropriate use documents to provide appropriate context for clinicians. Features hundreds of high-quality figures including multimodal cardiac imaging studies, anatomic illustrations, and graphs. Provides Key Point summaries, 50 procedural videos, and 100 multiple-choice questions and answers to reinforce understanding and facilitate review.