Download or read book Algorithms for High resolution Positron Emission Tomography written by Kyle Morgan Champley and published by . This book was released on 2010 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Image Reconstruction Algorithms for Achieving High resolution Positron Emission Tomography Images written by Ji-Ho Chang and published by . This book was released on 2004 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimal Reconstruction Algorithms for High resolution Positron Emission Tomography written by Floris Hugo Pieter van Velden and published by . This book was released on 2009 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Positron Emission Tomography written by Dale L. Bailey and published by Springer Science & Business Media. This book was released on 2006-07-06 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential for students, science and medical graduates who want to understand the basic science of Positron Emission Tomography (PET), this book describes the physics, chemistry, technology and overview of the clinical uses behind the science of PET and the imaging techniques it uses. In recent years, PET has moved from high-end research imaging tool used by the highly specialized to an essential component of clinical evaluation in the clinic, especially in cancer management. Previously being the realm of scientists, this book explains PET instrumentation, radiochemistry, PET data acquisition and image formation, integration of structural and functional images, radiation dosimetry and protection, and applications in dedicated areas such as drug development, oncology, and gene expression imaging. The technologist, the science, engineering or chemistry graduate seeking further detailed information about PET, or the medical advanced trainee wishing to gain insight into the basic science of PET will find this book invaluable. This book is primarily repackaged content from the Basic Science section of the 'big' Valk book on PET. It contains new, completely revised and unchanged chapters covering the "basic sciences" section of the main book - total 18 chapters: 2 new (chapters 1, 16) 8 completely revised (chapters 4, 5, 8, 13, 14, 15, 17, 18) 3 minor corrections (chapters 2, 6, 11) 5 unchanged (chapters 3, 7, 9, 10, 12)

Download or read book Residual Correction Algorithms for Statistical Image Reconstruction in Positron Emission Tomography written by Lin Fu 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 a radionuclide imaging modality that plays important roles in visualizing, targeting, and quantifying functional processes in vivo. High-resolution and quantitative PET images are reconstructed by solving large-scale inverse problems with iterative methods that incorporate accurate physics and noise modeling of the imaging process. The computation demands of PET image reconstruction are rapidly increasing as higher-resolution detectors, larger imaging field-of-view, and dynamic or adaptive data acquisition modes are being adopted by modern PET scanners. The trend of the increase in the computation demands is even faster than Moore's law that describes the exponential growth in the number of transistors placed on an integrated circuit. In this project a residual correction mechanism is introduced to PET image reconstruction to create computationally efficient yet accurate tomographic reconstruction algorithms. By using residual correction, reconstruction methods are able to adopt a more simplified physical model for fast computation while retaining the accuracy of the final solution. Residual correction can accelerate existing image reconstruction packages. It allows iterative reconstruction with more accurate physical models which are currently impractical due to the high computation cost. Two illustrative applications of the residual correction approach are provided. One is image reconstruction with an object-dependent Monte Carlo based physics model. The other is image reconstruction using an ultra fast GPU-accelerated simplified geometric model.

Download or read book Atlas of Clinical Positron Emission Tomography written by R. Wahl and published by CRC Press. This book was released on 1999-07-30 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron Emission Tomography (PET) is a rapidly developing subspecialty of nuclear medicine which, in a very short space of time, has been shown to have a significant impact on patient management. This comprehensive and up-to-date clinical atlas arises out of the combined experience from two leading PET centres during the formative years of clinical application. It is presented as a series of `mini-lectures', illustrated by real-life case studies, clear concise teaching points and directions for further reading. In each section the authors have identified the key management issues in which clinical PET imaging can be used to good effect, selecting high-quality PET images to illustrate each important application, most especially in the field of oncology, but also in cardiology, neurology and psychiatry. They offer relevant clinical information on epidemiology, pathology and (in the case of cancer) staging methods in the chapter introductions. For each area of application, tabulated summaries of current clinical indications for PET scans and suggested algorithms are provided.

Download or read book Partial volume Correction for High resolution Positron Emission Tomography Using Cortical Surface Information written by Thomas Funck and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: " Images from high resolution brain positron emission tomography (PET) scanners (CTI/Siemens HRRT) can measure differences in neuroreceptor concentrations in the gray matter that are related to cytoarchitectonic differences. However, the loss of resolution due to the PET imaging process results in partial-volume effects (PVE) that obscure the true radiotracer distribution. Although several partial-volume correction algorithms exist, these frequently require severely limiting assumptions. We developed a new iterative deconvolution algorithm for the partial-volume correction of PET images that aims to overcome the limitations of previous methods. The proposed method does so using two innovative techniques. One is the incorporation anatomic information from a cortical gray matter surface representation, extracted from magnetic resonance imaging (MRI). The second is the use of anatomically constrained smoothing to attenuate noise in the image. This method was validated using simulated and clinical data. The results show that our method consistently recovers accurate radiotracer concentrations on simulated data sets and produces similar, though slightly overestimated, results on the real clinical data when compared to the gold-standard partial-volume correction method. " --

Download or read book Positron Emission Tomography written by Dale L. Bailey and published by Springer Science & Business Media. This book was released on 2004-10-28 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential for students, science and medical graduates who want to understand the basic science of Positron Emission Tomography (PET), this book describes the physics, chemistry, technology and overview of the clinical uses behind the science of PET and the imaging techniques it uses. In recent years, PET has moved from high-end research imaging tool used by the highly specialized to an essential component of clinical evaluation in the clinic, especially in cancer management. Previously being the realm of scientists, this book explains PET instrumentation, radiochemistry, PET data acquisition and image formation, integration of structural and functional images, radiation dosimetry and protection, and applications in dedicated areas such as drug development, oncology, and gene expression imaging. The technologist, the science, engineering or chemistry graduate seeking further detailed information about PET, or the medical advanced trainee wishing to gain insight into the basic science of PET will find this book invaluable. This book is primarily repackaged content from the Basic Science section of the 'big' Valk book on PET. It contains new, completely revised and unchanged chapters covering the "basic sciences" section of the main book - total 18 chapters: 2 new (chapters 1, 16) 8 completely revised (chapters 4, 5, 8, 13, 14, 15, 17, 18) 3 minor corrections (chapters 2, 6, 11) 5 unchanged (chapters 3, 7, 9, 10, 12)

Download or read book Development of a Motion Correction and Partial Volume Correction Algorithm for High Resolution Imaging in Positron Emission Tomography written by Shailendra Hemun Segobin and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Positron Emission Tomography written by Sandro Misciagna and published by BoD – Books on Demand. This book was released on 2013-12-18 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron Emission Tomography is a nuclear medicine technique first used to study the brain. Several decades ago, PET scanners design and performance have improved considerably: number of detectors has increased from 20 to 20,0000, axial field of view from 2 to 20 cm, spatial resolution has improved from 25 to 5 mm, sensitivity has increased of about 1000 fold. At the same time, clinical applications have grown dramatically. In the first section of this book the authors review some of developments in PET instrumentation, with emphasis on data acquisition, processing and image formation. In the second section authors expose examples of applications in human research. In the last section authors describe applications in assessment and prediction of oncological treatment response.

Download or read book Reconstruction Algorithms for Novel Joint Imaging Techniques in PET written by Homayoon Ranjbar and published by . This book was released on 2017 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron emission tomography (PET) is an important functional in vivo imaging modality with many clinical applications. Its enormously wide range of applications has made both research and industry combine it with other imaging modalities such as X-ray computed tomography (CT) or magnetic resonance imaging (MRI). The general purpose of this work is to study two cases in PET where the goal is to perform image reconstruction jointly on two data types.The first case is the Beta-Gamma image reconstruction. Positron emitting isotopes, such as 11C, 13N, and 18F, can be used to label molecules, and tracers, such as 11CO2, are delivered to plants to study their biological processes, particularly metabolism and photosynthesis, which may contribute to the development of plants that have higher yield of crops and biomass. Measurements and resulting images from PET scanners are not quantitative in young plant structures or in plant leaves due to low positron annihilation in thin objects. To address this problem we have designed, assembled, modeled, and tested a nuclear imaging system (Simultaneous Beta-Gamma Imager). The imager can simultaneously detect positrons ([beta]+) and coincidence-gamma rays ([gamma]). The imaging system employs two planar detectors; one is a regular gamma detector which has a LYSO crystal array, and the other is a phoswich detector which has an additional BC-404 plastic scintillator for beta detection. A forward model for positrons is proposed along with a joint image reconstruction formulation to utilize the beta and coincidence-gamma measurements for estimating radioactivity distribution in plant leaves. The joint reconstruction algorithm first reconstructs the beta and gamma images independently to estimate the thickness component of the beta forward model, and then jointly estimates the radioactivity distribution in the object. We have validated the physics model and the reconstruction framework through a phantom imaging study and imaging a tomato leaf that has absorbed 11CO2. The results demonstrate that the simultaneously acquired beta and coincidence-gamma data, combined with our proposed joint reconstruction algorithm, improved the quantitative accuracy of estimating radioactivity distribution in thin objects such as leaves. We used the Structural Similarity (SSIM) index for comparing the leaf images from the Simultaneous Beta-Gamma Imager with the ground truth image. The jointly reconstructed images yield SSIM indices of 0.69 and 0.63, whereas the separately reconstructed beta alone and gamma alone images had indices of 0.33 and 0.52, respectively.The second case is the virtual-pinhole PET technology, which has shown that higher resolution and contrast recovery can be gained by adding a high resolution PET insert with smaller crystals to a conventional PET scanner. Such enhancements are obtained when the insert is placed in proximity of the region of interest (ROI) and in coincidence with the conventional PET scanner. Intuitively, the insert may be positioned within the scanner's axial field-of-view (FOV) and radially closer to the ROI than the scanner's ring. One of the complicating factors of this design is the insert's blocking the scanner's lines-of-response (LORs). Such data may be compensated through attenuation and scatter correction in image reconstruction. However, a potential solution is to place the insert outside of the scanner's axial FOV and to move the body to be in proximity of the insert. We call this imaging strategy the surveillance mode. As the main focus of this work, we have developed an image reconstruction framework for the surveillance mode imaging. The preliminary results show improvement in spatial resolution and contrast recovery. Any improvement in contrast recovery should result in enhancement in tumor detectability, which will be of high clinical significance.

Download or read book Functional Neuromarkers for Psychiatry written by Juri D. Kropotov and published by Academic Press. This book was released on 2016-05-03 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional Neuromarkers for Psychiatry explores recent advances in neuroscience that have allowed scientists to discover functional neuromarkers of psychiatric disorders. These neuromarkers include brain activation patterns seen via fMRI, PET, qEEG, and ERPs. The book examines these neuromarkers in detail—what to look for, how to use them in clinical practice, and the promise they provide toward early detection, prevention, and personalized treatment of mental disorders. The neuromarkers identified in this book have a diagnostic sensitivity and specificity higher than 80%. They are reliable, reproducible, inexpensive to measure, noninvasive, and have been confirmed by at least two independent studies. The book focuses primarily on the analysis of EEG and ERPs. It elucidates the neuronal mechanisms that generate EEG spontaneous rhythms and explores the functional meaning of ERP components in cognitive tasks. The functional neuromarkers for ADHD, schizophrenia, and obsessive-compulsive disorder are reviewed in detail. The book highlights how to use these functional neuromarkers for diagnosis, personalized neurotherapy, and monitoring treatment results. Identifies specific brain activation patterns that are neuromarkers for psychiatric disorders Includes neuromarkers as seen via fMRI, PET, qEEG, and ERPs Addresses neuromarkers for ADHD, schizophrenia, and OCD in detail Provides information on using neuromarkers for diagnosis and/or personalized treatment

Download or read book Perspectives on Nuclear Medicine for Molecular Diagnosis and Integrated Therapy written by Yuji Kuge and published by Springer. This book was released on 2016-04-02 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: ​This work is devoted to understanding the recent advances in nuclear medicine and molecular imaging technologies along with their application to integrated medical therapy and future drug development. This anthology is based on the international symposium in 2015 entitled “Perspective on Nuclear Medicine for Molecular Diagnosis and Integrated Therapy. “The symposium provided an opportunity to exchange ideas on how to promote nuclear medicine technology and how to extend the technology to medical therapy and drug development, and was also a good opportunity to discuss the future perspective of nuclear medicine and molecular imaging by worldwide leaders in the field. Molecular imaging technologies have been rapidly developed worldwide in recent years. Among those developments, nuclear medicine has come to play an important role in quantitative analysis of biological process in vivo as well as in wide clinical use. With the current progress of nuclear medicine and molecular imaging, this modality has been applied for treatment monitoring and predicting its outcome with the use of optimal imaging biomarkers and suitable quantitative analysis. Truly, a new era has arrived with clinical use of nuclear medicine and molecular imaging for personalized medicine. This volume will benefit a wide variety of researchers in life science including those working in drug development, molecular imaging, and medical therapy as well as physicians who utilize diagnostic imaging.

Download or read book Correction Techniques in Emission Tomography written by Mohammad Dawood and published by CRC Press. This book was released on 2012-04-27 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an interdisciplinary team of medical doctors, computer scientists, physicists, engineers, and mathematicians, Correction Techniques in Emission Tomography presents various correction methods used in emission tomography to generate and enhance images. It discusses the techniques from a computer science, mathematics, and physics viewpoint. The book gives a comprehensive overview of correction techniques at different levels of the data processing workflow. It covers nuclear medicine imaging, hybrid emission tomography (PET-CT, SPECT-CT, PET-MRI, PET-ultrasound), and optical imaging (fluorescence molecular tomography). It illustrates basic principles as well as recent advances, such as model-based iterative algorithms and 4D methods. An important aspect of the book is on new and sophisticated motion correction techniques in PET imaging. These techniques enable high-resolution, high-quality images, leading to better imaging analysis and image-based diagnostics. Reflecting state-of-the-art research, this volume explores the range of problems that occur in emission tomography. It looks at how the resulting images are affected and presents practical compensation methods to overcome the problems and improve the images.

Download or read book High Resolution Positron Emission Tomography written by Sung Chul Juh and published by . This book was released on 1991 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Advanced Clinical PET System Designs written by Fan-Chung Hsu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Positron emission tomography (PET) is a functional radionuclide imaging modality commonly used for managing diseases such as cancer. High-resolution, high-sensitivity, quantitative PET imaging could open up potential new uses in early stage cancer management such as guiding biopsy or surgical resection. Locoregional PET systems with reconfigurable field-of-views (FOV) can further increase the sensitivity and resolution for a specific organ of interest. We will start this thesis by introducing the physics and basic detector designs of PET systems. It will then discuss design and performance of whole-body and locoregional PET system designs that are being investigated in the field. Then, the thesis will describe in detail a 1 mm resolution clinical locoregional PET scanner that is being constructed at Stanford. The design choices and electronics of this system will be discussed, and then system calibrations and performance test results will be shown. Finally, we will discuss additional data correction algorithms specific to this system, such as randoms correction and limited angle tomography image artifact correction algorithms. The results presented in this thesis show that the prototype subsystem of the 1 mm resolution clinical locoregional PET system can achieve spatial resolution of 0.73 mm at the center of the FOV, energy resolution of 11.34%, and coincident timing resolution (CTR) of 13.92 ns. The unique 3D position sensitive scintillation (3D-PSS) detectors used in the system allows for intercrystal scatter positioning algorithms that can be used to improve contrast-to-noise ratio (CNR) by 8.4%, or reduce the patient dose by 12% while maintaining the same image quality. This thesis may be useful for readers that are interested in the physics, electronics, and image quality of high-resolution PET scanners with small scintillation crystal elements. Interesting topics include investigations of detector signal multiplexing across a system, limited angle tomography effects in the reconstructed image, and ICS positioning in a system with multiplexed detectors.