Improved Signal and Image Interpolation in Biomedical Applications: The Case of Magnetic Resonance Imaging (MRI) PDF Download
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Author: Ciulla, Carlo
Publisher: IGI Global
ISBN: 1605662038
Category : Computers
Languages : en
Pages : 640
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Book Description
"This book presents novel concepts supported through mathematics to create unique theories related to interpolation"--Provided by publisher.
Author: Ciulla, Carlo
Publisher: IGI Global
ISBN: 1605662038
Category : Computers
Languages : en
Pages : 640
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Book Description
"This book presents novel concepts supported through mathematics to create unique theories related to interpolation"--Provided by publisher.
Author: Habre, Samer
Publisher: IGI Global
ISBN: 1466640510
Category : Education
Languages : en
Pages : 298
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Book Description
Mathematics is, by its very nature, an abstract discipline. However, many students learn best by thinking in terms of tangible constructs. Enhancing Mathematics Understanding through Visualization: The Role of Dynamical Software brings these conflicting viewpoints together by offering visual representations as a method of mathematics instruction. The book explores the role of technology in providing access to multiple representations of concepts, using software applications to create a rich environment in which a studentÂ’s understanding of mathematical concepts can flourish. Both students and instructors of mathematics at the university level will use this book to implement various novel techniques for the delivery of mathematical concepts in their classrooms. This book is part of the Research Essential collection.
Author: Myong Yong Choi
Publisher: Elsevier
ISBN: 0443133808
Category : Technology & Engineering
Languages : en
Pages : 338
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Book Description
Pulsed Laser Induced Nanostructures in Liquids for Energy and Environmental Applications covers fundamental insights on the mechanism of pulsed laser techniques by considering various experimental conditions to accelerate hypotheses that are appropriate for the production of efficient nanomaterials. In this book, readers will learn about the major advancements in the field of pulsed laser technologies during the past decades, current applications, and future impacts of pulsed laser technologies. This book provides a comprehensive overview of the development of nanostructured catalytic materials via pulsed laser techniques, their use as energy, environment-related applications and their present trend in the industry and market. It also highlights the latest advances related to the application of these nanostructured materials produced via pulsed laser in liquid techniques in various energy (supercapacitor, batteries, and hydrogen production) and environmental remediation (wastewater treatment and conversion of waste into value-added product) processes. Recent progress on several kinds of both photo and electroactive nanomaterials is reviewed, and essential aspects which govern catalytic behaviors, and the corresponding stability, are discussed. Provides basic principles of pulsed laser–matter interaction, with a focus on the resulting material responses compared to other conventional techniques and state-of-the-art applications Offers comprehensive coverage of pulsed laser induced nanomaterials and their potential energy and environmental applications Examines the properties of pulsed laser induced nanostructures that make them so adaptable
Author: Hong Yan
Publisher: CRC Press
ISBN: 9781135560997
Category : Technology & Engineering
Languages : en
Pages : 672
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Book Description
This reference/text contains the latest signal processing techniques in magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) for more efficient clinical diagnoses-providing ready-to-use algorithms for image segmentation and analysis, reconstruction and visualization, and removal of distortions and artifacts for increased detection of disease. Detailing cost-effective procedures for improved image and spectrum quality, "Signal Processing for Magnetic Resonance Imaging and Spectroscopy" discusses the evaluation of specific shapes and geometric features in MR images; modern strategies for MR data processing; the characterization and analysis of cerebral, muscular, and cardiac tissues; wavelet transform and projection on convex sets (POCS), methods for image reconstruction, restoration, and enhancement; and effective methods for the reduction of ghost artifacts.
Author: Joseph Suresh Paul
Publisher: CRC Press
ISBN: 1351029258
Category : Medical
Languages : en
Pages : 306
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Book Description
Regularization becomes an integral part of the reconstruction process in accelerated parallel magnetic resonance imaging (pMRI) due to the need for utilizing the most discriminative information in the form of parsimonious models to generate high quality images with reduced noise and artifacts. Apart from providing a detailed overview and implementation details of various pMRI reconstruction methods, Regularized image reconstruction in parallel MRI with MATLAB examples interprets regularized image reconstruction in pMRI as a means to effectively control the balance between two specific types of error signals to either improve the accuracy in estimation of missing samples, or speed up the estimation process. The first type corresponds to the modeling error between acquired and their estimated values. The second type arises due to the perturbation of k-space values in autocalibration methods or sparse approximation in the compressed sensing based reconstruction model. Features: Provides details for optimizing regularization parameters in each type of reconstruction. Presents comparison of regularization approaches for each type of pMRI reconstruction. Includes discussion of case studies using clinically acquired data. MATLAB codes are provided for each reconstruction type. Contains method-wise description of adapting regularization to optimize speed and accuracy. This book serves as a reference material for researchers and students involved in development of pMRI reconstruction methods. Industry practitioners concerned with how to apply regularization in pMRI reconstruction will find this book most useful.
Author: Carlo Ciulla
Publisher: Createspace Independent Publishing Platform
ISBN: 9781534708594
Category :
Languages : en
Pages : 176
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Book Description
The calculation of the intensity-curvature terms is related to the discrete sample of signal values and is also related to the analog/continuous transformation necessary to the function to become an interpolator. Such calculation is undertaken within the entire spatial extent of the sampling location, and as shown in Ciulla (2009), leads to the measurement of the energy level change determined through the interpolation function which is called: the Intensity-Curvature Functional. The idea is therefore to equate the intensity-curvature term calculated with the signal (image) through the given mathematical function in two conditions: (i) the given signal as it has been sampled and (ii) the signal calculated at locations where is unknown because of the limitations of the sampling instrument. Through mathematical developments that illustrate concepts of algebra and calculus, the equation of the two intensity-curvature terms furnish the instrument apt for deriving a new signal. This new signal is dependent on the given model function and is called Signal Resilient to Interpolation (SRI). The book includes illustration of the math processes, logical reasoning, which show how to generate the Signal Resilient to Interpolation. Within the book, the Signal Resilient to Interpolation is derived on the basis of quadratic and cubic polynomials in one, two and three dimensions, embedding and not embedding the pixel (voxel in three dimensions) to be re-sampled. Once the signal is modeled through an interpolator, it is possible to calculate the second order derivatives, and thus the curvature of the model interpolator which is nonetheless the modeled representation of the curvature of the signal. Geometrically, the curvature of the signal is the tangent to the first order derivative curve of the signal. There are two types of curvature treated in this book and they are: (i) classic-curvature and (ii) resilient curvature.
Author: Kayvan Najarian
Publisher: CRC Press
ISBN: 1439870349
Category : Medical
Languages : en
Pages : 411
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Book Description
Written for senior-level and first year graduate students in biomedical signal and image processing, this book describes fundamental signal and image processing techniques that are used to process biomedical information. The book also discusses application of these techniques in the processing of some of the main biomedical signals and images, such as EEG, ECG, MRI, and CT. New features of this edition include the technical updating of each chapter along with the addition of many more examples, the majority of which are MATLAB based.
Author: Huajun She
Publisher:
ISBN:
Category : Diagnostic imaging
Languages : en
Pages : 115
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Book Description
Author:
Publisher:
ISBN:
Category : Diagnostic imaging
Languages : en
Pages : 800
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Book Description
Author: Andrew T. Curtis
Publisher:
ISBN:
Category :
Languages : en
Pages : 268
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Book Description
Performing magnetic resonance imaging at high magnetic field strength promises many improvements over low fields that are of direct benefit in functional neuroimaging. This includes the possibility of improved signal-to-noise levels, and increased BOLD functional contrast and spatial specificity. However, human MRI at 7T and above suffers from unique engineering challenges that limit the achievable gains. In this thesis, three technological developments are introduced, all of which address separate issues associated with functional magnetic resonance neuroimaging at very high magnetic field strengths. First, the image homogeneity problem is addressed by investigating methods of RF shimming -- modifying the excitation portion of the MRI experiment for use with multi-channel RF coils. It is demonstrated that in 2D MRI experiments, shimming on a slice-by slice basis allows utilization of an extra degree of freedom available from the slice dimension, resulting in significant gains in image homogeneity and reduced RF power requirements. After acceptable images are available, we move to address complications of high field imaging that manifest in the fMRI time series. In the second paper, the increased physiological noise present in BOLD time series at high field is addressed with a unique data-driven noise regressor scheme based upon information in the phase component of the MRI signal. It is demonstrated that this method identifies and removes a significant portion of physiological signals, and performs as good or better than other popular data driven methods that use only the magnitude signal information. Lastly, the BOLD phase signal is again leveraged to address the confounding role of veins in resting state BOLD fMRI experiments. The phase regressor technique (previously developed by Dr. Menon) is modified and applied to resting state fMRI to remove macro vascular contributions in the datasets, leading to changes in spatial extent and connectivity of common resting state networks on single subjects and at the group level.
